ANSYS, Inc. Release Notes - sharcnet.ca · 2.11.2. IC Engine System Features ..... 61 3. Mechanical...

ANSYS, Inc. Release Notes

Release 14.0ANSYS, Inc.

November 2011Southpointe

275 Technology Drive 000285

Canonsburg, PA 15317 ANSYS, Inc. is

certified to ISO

9001:[email protected]

http://www.ansys.com

(T) 724-746-3304

(F) 724-514-9494

Copyright and Trademark Information

© 2011 SAS IP, Inc. All rights reserved. Unauthorized use, distribution or duplication is

prohibited.

ANSYS, ANSYS Workbench, Ansoft, AUTODYN, EKM, Engineering Knowledge Manager,

CFX, FLUENT, HFSS and any and all ANSYS, Inc. brand, product, service and feature names,

logos and slogans are registered trademarks or trademarks of ANSYS, Inc. or its subsidi-

aries in the United States or other countries. ICEM CFD is a trademark used by ANSYS,

Inc. under license. CFX is a trademark of Sony Corporation in Japan. All other brand,

product, service and feature names or trademarks are the property of their respective

owners.

Disclaimer Notice

THIS ANSYS SOFTWARE PRODUCT AND PROGRAM DOCUMENTATION INCLUDE TRADE

SECRETS AND ARE CONFIDENTIAL AND PROPRIETARY PRODUCTS OF ANSYS, INC., ITS

SUBSIDIARIES, OR LICENSORS. The software products and documentation are furnished

by ANSYS, Inc., its subsidiaries, or affiliates under a software license agreement that

contains provisions concerning non-disclosure, copying, length and nature of use, com-

pliance with exporting laws, warranties, disclaimers, limitations of liability, and remedies,

and other provisions. The software products and documentation may be used, disclosed,

transferred, or copied only in accordance with the terms and conditions of that software

license agreement.

ANSYS, Inc. is certified to ISO 9001:2008.

U.S. Government Rights

For U.S. Government users, except as specifically granted by the ANSYS, Inc. software li-

cense agreement, the use, duplication, or disclosure by the United States Government

is subject to restrictions stated in the ANSYS, Inc. software license agreement and FAR

12.212 (for non-DOD licenses).

Third-Party Software

See the legal information in the product help files for the complete Legal Notice for

ANSYS proprietary software and third-party software. If you are unable to access the

Legal Notice, please contact ANSYS, Inc.

Published in the U.S.A.

Table of Contents

1. Global . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1. Advisories .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2. Installation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3. Licensing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4. The ANSYS Customer Portal ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Workbench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1. ANSYS Workbench 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.1. Design Point Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.2. Reporting .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.3. Workbench Options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.4. Tighter Integration Between ANSYS Workbench and EKM ..... . . . . . . . . . . . . . . . . 7

2.1.5. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2. DesignModeler Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3.TurboSystem Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3.1. ANSYS BladeModeler ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3.1.1. BladeGen .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3.1.1.1. BladeGen New Features and Enhancements .... . . . . . . . . . . . . . . . . . . 14

2.3.1.1.2. BladeGen Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.3.1.2. BladeEditor ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.3.1.2.1. BladeEditor New Features and Enhancements .... . . . . . . . . . . . . . . . 14

2.3.2. Vista CCD .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.3.2.1. Vista CCD New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.3.2.2. Vista CCD Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4. Meshing Application Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.5. Mechanical Application Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.6. DesignXplorer Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.6.1. DesignXplorer General Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

2.6.2. DesignXplorer Manufacturable Values Enhancements .... . . . . . . . . . . . . . . . . . . . . . 46

2.6.3. DesignXplorer Design Point Update Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . 47

2.6.4. DesignXplorer Remote Design Point Update Enhancements .... . . . . . . . . . . . 48

2.6.5. Response Surface Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2.6.6. DesignXplorer Chart Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2.7. Remote Solve Manager Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.8. Engineering Data Workspace Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

2.9. EKM Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.9.1. EKM ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

2.9.2. EKM Desktop .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.10. System Coupling .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.11. IC Engine .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

iiiRelease 14.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS,

Inc. and its subsidiaries and affiliates.

2.11.1. Advantages of the IC Engine System ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.11.2. IC Engine System Features .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

3. Mechanical APDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.1. Structural ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.1.1. Contact ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

3.1.1.1. Contact Stabilization Damping .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

3.1.1.2. Squeal Damping .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

3.1.1.3. Surface-Projection-Based Contact for 2-D Models ... . . . . . . . . . . . . . . . . . . . . 65

3.1.1.4. Surface-Projection-Based Contact with MPC Contact ... . . . . . . . . . . . . . . . 65

3.1.1.5. Geometry Correction for 2-D Contact and Target Surfaces .... . . . . . . 66

3.1.1.6. Bonding Temperature .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3.1.1.7. Other Contact Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3.1.2. Elements and Nonlinear Technology .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3.1.2.1. Rezoning .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

3.1.2.2. Ocean Loading .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

3.1.2.2.1. Ocean Wave Loading in a Harmonic Analysis ... . . . . . . . . . . . . . . . . . . 67

3.1.2.2.2. Diffracted Wave Support ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

3.1.2.3. Beam Elements with Shape Memory Alloy and Hyperelasticity

(Solid Pipe Section) ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

3.1.2.4. Coupled Aeroelastic-Structural Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

3.1.2.5. Discrete-Thickness Shells with 2-D Array .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

3.1.2.6. Enhanced Body Force Loading for Pipe and Elbow Elements .... . . . 69

3.1.2.7. Soil-Pile-Structure Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

3.1.3. Linear Dynamics .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

3.1.3.1. Damping .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

3.1.3.2. Linear Non-Prestressed Modal Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

3.1.3.3. Mode Superposition (MSUP) Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

3.1.3.4. Thermal Loads in Modal and Prestressed Harmonic Analyses .... . . 71

3.1.3.5. Rotordynamics ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

3.1.3.6. Spectrum Analysis .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

3.1.3.7. Spectrum Combination .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

3.1.3.8. Other Linear Dynamics Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

3.1.4. Materials and Fracture .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

3.1.4.1. VCCT-Based Crack Growth Simulation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

3.1.4.2. Chaboche Material Curve Fitting .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

3.1.4.3. Shape Memory Alloy .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

3.1.4.4. Microplane Material Model for Concrete Modeling .... . . . . . . . . . . . . . . . . . 73

3.1.4.5. Enhanced Initial State Capability ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

3.1.4.6.Viscoelastic Response of Materials with Anisotropic Hyperelasticity

... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

3.1.4.7. Harmonic Viscoelasticity ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.1.4.8. Coupled Pore Fluid Diffusion Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Release 14.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS,Inc. and its subsidiaries and affiliates.iv


3.1.4.9. Interface Delamination Modeling with Interface Elements .... . . . . . . 75

3.1.4.10. Swelling .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.1.4.11. Anisotropic Hyperelasticity ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

3.1.4.12. Progressive Damage of Fiber-Reinforced Composites .... . . . . . . . . . . . 76

3.2. Coupled-Field .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

3.2.1. Structural-Thermal Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

3.2.2. Coupled-Diffusion Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

3.3. Acoustics ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

3.4. Radiation Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3.4.1. Energy Balance .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3.4.2. View Factor Calculations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3.4.3. Radiosity Solver Parallelization .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3.5. Solvers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3.5.1. Distributed ANSYS Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

3.5.2. GPU Acceleration Enhancements ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

3.5.3. Subspace Eigensolver for Eigenvalue Buckling Analysis ... . . . . . . . . . . . . . . . . . . . . 81

3.5.4. Overconstraint Detection .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

3.5.5. Other Solver Changes and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

3.6. Linear Perturbation Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3.6.1. Support for More Analysis Types .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3.6.2. Linear Behavior Based on a Prior Preloaded Status .... . . . . . . . . . . . . . . . . . . . . . . . . . . 82

3.6.3. Linear Perturbation Tangent Option .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

3.7. Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

3.7.1. New Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

3.7.2. Modified Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

3.7.3. Undocumented Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3.7.4. Archived Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3.8. Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3.8.1. Modified Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3.8.2. Undocumented Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

3.9. Other Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

3.9.1. Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

3.9.1.1. Technology Demonstration Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

3.9.1.1.1. Hydrostatic Fluid Analysis of an Inflating and Rolling

Tire .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

3.9.1.1.2. Cardiovascular Stent Simulation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3.9.1.1.3. Nonlinear Analysis of a Rubber Boot Seal ... . . . . . . . . . . . . . . . . . . . . . . . . 92

3.9.1.1.4. Rocket Nozzle Extension Simulation: Operation .... . . . . . . . . . . . . . 92

3.9.1.1.5. Hot-Rolling Structural Steel Analysis with 3-D Rezon-

ing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3.9.1.1.6. Friction Stir Welding (FSW) Simulation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

3.9.1.1.7. Acoustic Analysis of a Small Speaker System ..... . . . . . . . . . . . . . . . . . 93

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3.9.1.2. Feature Archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

3.9.1.3. Material Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

3.9.1.4. Element Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.9.1.5. Parallel Processing Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.9.1.6. Documentation Updates for Programmers .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.9.1.6.1. Routines and Functions Updated .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.9.2. Preprocessing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.9.3. Postprocessing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

3.9.3.1. Load Case Combination of Complex Results ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

3.9.3.2. Fatigue .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

3.9.3.3. Failure Criteria ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

3.9.4. Memory Management .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

3.9.5. APDL Math Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

3.9.6. File Splitting .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

3.10. Known Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

3.10.1. Release 13 Compatibility with Platform MPI .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

3.10.2. BUCOPT Command Changes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

3.10.3. Multiframe Restart Files Are Overwritten by Default ... . . . . . . . . . . . . . . . . . . . . . . . 97

3.10.4. RESUME Command with POST1 Fatigue .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

3.10.5. Writing and Reading Geometry Items .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

3.10.6. Results File Format Change ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

3.10.7. Substructure File Format Change .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

4. AUTODYN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

4.1. 3D Parallel Simulations with Parts Containing Rigid Body Material(s) ... . . . . . . . . . 99

4.2. Forces on Rigid Bodies .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

4.3. Nodal Based Strain Tetrahedra .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

4.4. Performance Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

5. ICEM CFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

5.1. Highlights of ANSYS ICEM CFD 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

5.2. Key New Features/Improvements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

5.2.1. General ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

5.2.2. Blocking .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

5.2.3. Mesh Editing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

5.2.4. Output Interfaces .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

5.3. Known Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

5.4. Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

5.4.1. Tutorials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

6. TurboGrid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

7. FLUENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

7.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

7.2. New Features in ANSYS FLUENT 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

7.3. Supported Platforms for ANSYS FLUENT 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

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7.4. Known Limitations in ANSYS FLUENT 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.5. Limitations That No Longer Apply in ANSYS FLUENT 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . 119

7.6. Updates Affecting Code Behavior ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

8. CFX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

8.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

8.1.1. General Changes to ANSYS CFX ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

8.1.2. ANSYS CFX-Solver ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

8.1.2.1. CFX-Solver .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

8.1.3. ANSYS CFX-Pre .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

8.1.4. ANSYS CFX-Solver Manager .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

8.1.5. ANSYS CFD-Post ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

8.1.6. ANSYS CFX Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

8.1.7. ANSYS CFX in Workbench .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

8.2. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

8.2.1. CFX-Solver ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

8.2.2. CFX-Pre .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

8.2.3. CFX-Solver Manager .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

8.2.4. CFD-Post ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

9. POLYFLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

9.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

9.2. New Features .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

9.3. Defect Fixes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

9.4. Known Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

10. Icepak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

10.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

10.2. New and Modified Features in ANSYS Icepak 14 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

11. CFD-Post . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

11.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

11.2. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

12. AQWA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

12.1. ANSYS AQWA ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

13. ASAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

13.1. ANSYS ASAS .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

13.2. ANSYS BEAMCHECK .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

13.3. ANSYS FATJACK .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

13.4. FEMGV ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

14. TGrid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

14.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

14.2. New Features in TGrid 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

14.3. Supported Platforms for TGrid 14.0 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

viiRelease 14.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS,



Chapter 1: Global

The information shown below apply to all ANSYS, Inc. products at the 14.0 release.

Be sure to read the Release Notes for your individual product(s) for additional

installation and licensing changes specific to your product(s).

To access Release Notes for previous ANSYS, Inc. releases, follow these links:

• Version 13.0

• Version 12.1 for Linux

• Version 12.1

• Version 12.0

1.1. Advisories

In addition to the incompatibilities noted within the release notes, known non-

operational behavior, errors and/or limitations at the time of release are docu-

mented in the Known Issues and Limitations document, although not accessible

via the ANSYS Help Viewer. See the ANSYS Customer Portal for information about

the documentation errata, ANSYS service packs and any additional items not

included in the Known Issues and Limitations document. First-time users of

the customer portal must register to create a password.

1.2. Installation

• ANSYS, Inc. has discontinued support for the HP-UX Itanium 64, the Sun Solaris

x64, IBM AIX 64, and the Linux 32-bit platforms for all products.

• ANSYS, Inc. has discontinued support for the Linux Itanium 64 platform for the

ICEM CFD product.

• Third-party products that are used as part of the installation process are now

documented in the ANSYS, Inc. Installation Guides.

• The ASAS product has been retired. The FATJACK, BEAMCHECK, and Splinter

products are now installed automatically with the Mechanical application.

1Release 14.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS,


help/ai_rn_2913.pdf

help/ai_rn_linux2868.pdf

help/ai_rn_2825.pdf

help/ai_rn_2647.pdf

• The Pro/ENGINEER CAD product has been rebranded to Creo Parametric.

• The ANSYS, Inc. product installation now supports Creo Parametric, NX, Solid-

Works, and Autodesk Inventor reader options. You can now choose to install the

Reader (no CAD installation required) or the Associative Plug-in (CAD installation

required) options for these CAD products.

• The release version now appears with each product selection in the Start menu

on Windows.

• You can now specify two DVD drives during a silent installation to accommodate

the installation process spanning two DVDs. See the discussion on Silent Mode

Operations in the Installation Guide for your platform for more information.

• You can now choose to install and uninstall only Remote Solve Manager (RSM).

RSM will continue to be installed as part of ANSYS Workbench.

• You can now choose to install and uninstall only the EKM Server on Windows

platforms.

• The use of files requiring 777 permissions on Linux has been minimized. For

more information on remaining full-permission files and softlinks, see the section

Third-Party Software and Other Security Considerations in the ANSYS, Inc. Linux

Installation Guide.

• The PDF version of the documentation that is available on the Customer Portal

is now unprotected, allowing you to copy and paste content from the PDFs into

other locations. This capability is especially useful if you want to use command

snippets that are available throughout the documentation.

1.3. Licensing

The following enhancements have been made to ANSYS, Inc. Licensing for Release

14.0:

• ANSYS, Inc. has discontinued support for the HP-UX Itanium 64 and the IBM AIX

64 platforms for the ANSYS, Inc. License Manager.

• At ANSYS Release 14.0, the license manager daemons (lmgrd and ansyslmd )

have been upgraded to FLEXlm 11.9.1 (FLEXnet 11.9.1). We strongly recommend

that you upgrade to this version of the license manager, regardless of whether

you are upgrading to ANSYS Release 14.0.

• You can now use the -setliclang option to change the language used by

ANSLIC_ADMIN and the ANSYS, Inc. Licensing Interconnect log file. This option

changes the language for all users running the ANSLIC_ADMIN utility (only the

server ANSLIC_ADMIN on Windows).

Release 14.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS,Inc. and its subsidiaries and affiliates.2

Chapter 1: Global

To change the language setting locally for only the current session of the

ANSLIC_ADMIN utility, you can launch the utility using the -lang option.

To always use this setting locally without having to set this command line

option each time, you can set an alias on UNIX/Linux or modify your Start

menu shortcut on Windows. Please refer to your operating system document-

ation for those instructions.

For more information on using these language settings, please see the silent

license manager installation instructions in the ANSYS, Inc. Installation Guide

for your platform and the ANSLIC_ADMIN discussion in the ANSYS, Inc. Li-

censing Guide.

• ANSYS HPC Pack licenses are now available for borrowing. Only a single HPC

Pack license can be borrowed at one time.

• CFX now respects licensing preferences. Previously, CFX would always use the

lowest capability first. It will now use the licenses specified with User License

Preferences. See the ANSYS, Inc. Licensing Guide for more information on setting

licensing preferences.

• The default handling of the FLEXlm options file has changed. The Licensing In-

terconnect will no longer process the FLEXlm options file by default. If you need

to have the Licensing Interconnect process the FLEXlm options file (needed when

the FLEXlm options file contains IP addresses), add the following entry to the

ansyslmd.ini file on the license server:

ANSYSLI_USE_FLEXOPTS=1

Then, either reread or restart the Licensing Interconnect.

1.4. The ANSYS Customer Portal

If you have a password to the ANSYS Customer Portal (https://www1.an-

sys.com/customer/), you can view additional documentation information and

late changes. The portal is also your source for ANSYS, Inc. software downloads,

service packs, product information (including example applications, current and

archived documentation, undocumented commands, input files, and product

previews), and online support.



The ANSYS Customer Portal

https://www1.ansys.com/customer/



Chapter 2: Workbench

2.1. ANSYS Workbench 14.0

2.1.1. Design Point Enhancements

The following enhancements have been made to design point behavior:

Specify Design Point Update Order at the Project Level

You can now specify the order in which Design Points are updated at the project

level. When multiple Design Points share the same geometry or mesh, you can

improve the efficiency of the computations by specifying an update order in

which only those Design Points that change are updated. You can change the

sequence of updates manually, by a column sort, or by using the automatic op-

timization feature. For more information, see Design Point Update Order in the

Workbench User Guide.

The ability to change the order of Design Point updates is also available at the

DesignXplorer level. See Design Point Update Order in the DesignXplorer help

for more information.

Added Support for Simultaneous Update of Design Points via RSM

You can now use the Remote Solve Manager (RSM) to enable simultaneous exe-

cution of design points, allowing you to decrease the overall time required to

complete parametric what-if and design exploration studies. In the Parameter

Set Properties view, use the new Default Job Submission property to specify

how design points sent to Remote Solve Manager for update will be submitted.

For more information, see Updating Design Points via Remote Solve Manager

(RSM) in the Workbench User’s Guide.



Submit Design Point Updates to RSM from DesignXplorer

You can now submit Design Point updates to RSM from DesignXplorer (DX). The

Pending state is also now supported for DX, which means if you submit a design

point update to RSM from DX, you can continue interacting with the project on

a limited basis and can view intermediate results of individual design point up-

dates via the Table of Design Points while the remote update is in progress.

Additionally, if you exit the project, when you reopen it the Resume button allows

you to resume the update.

For additional information, see Using Remote Solve Manager with DesignXplorer

in the DesignXplorer help.

2.1.2. Reporting

You can now write out a report of the current project in .html/.htm format. To

write a report, choose File> Export Report. The report will be written to the

user_files directory under the project directory by default. You can control

whether the report opens by default using the Options>Project Reporting

settings.

The report contains basic project information, including a graphic of the systems

as shown in the project schematic, parameter and design point information, and

system and cell information. The specific information provided will vary depending

on the contents of the project. Additional information may be available from

the individual applications. Not all applications provide reporting information.

2.1.3. Workbench Options

Enhancements to “Named Ranges” Filtering Prefix for Microsoft

Excel Systems

For a project that includes a Microsoft Excel component, the Named Ranges

prefix can now be specified at the global level (via the ANSYS Workbench Options

dialog) as well as at the project level (via the Named Range Key property of the

Analysis component). Additionally, the Named Ranges filtering prefix now

conveniently defaults to blank or “no filter.”

For more information, see Microsoft Office Excel or Microsoft Office Excel Options

in the Workbench User’s Guide.



2.1.4. Tighter Integration Between ANSYS Workbench and

EKM

The ANSYS Engineering Knowledge Manager (EKM) is a Simulation Process and

Data Management (SPDM) software system that allows you to store, share, report,

and operate on your simulation data in an accessible, web-based environment.

While EKM can operate as a stand-alone system, its integration with ANSYS

Workbench streamlines the process of storing, retrieving, and sharing your

Workbench projects within an EKM repository. Through the provided Repository

capabilities in the Workbench File menu, you have access to powerful SPDM

capabilities that allow you to:

• archive completed projects or store works in progress to local or remote storage

• share and collaborate on your projects

• search projects based on names, dates, simulation type, or other criteria

• retrieve your own projects or those shared by other users

ANSYS EKM provides access to a simulation data repository, which may exist

locally on your workstation (for individual repositories) or reside on a larger

dedicated server for enterprise-level data management.

2.1.5. Incompatibilities

There are no known incompatibilities to date in release 14.0.

2.2. DesignModeler Release Notes

The following general enhancements have been made in release 14.0:

Project Schematic Connections

You may now connect HFSS, Q3D, and Maxwell systems to downstream Geometry

cells via a provides-to connection in the project schematic.

Expanded Boolean Feature Capability

The Boolean feature now includes the ability to Imprint Faces from a list of target

and tool bodies. Either the target or tool bodies can be frozen.



DesignModeler Release Notes

Named Selection Feature Property Enhancement

An additional property named Export Selection is now available via the Named

Selection feature. Selection of the property via the Details View controls the

transfer of Named Selections to downstream applications such as ANSYS Mech-

anical. Note that the Named Selection option and the filter properties in the

Geometry cell of the Project Schematic are no longer available if the Geometry

cell specifies an ANSYS DesignModeler database.

GAMBIT Reader Upgrade

Beginning with the release 14 of ANSYS Workbench, GAMBIT real and non-real

(virtual, faceted, CAD) geometry may be processed. An option allows you to

choose whether to process both real and non-real data or just real only. Prior to

release 14, only GAMBIT real geometry (including hidden real geometry) would

be processed. By processing real and non-real geometry, the GAMBIT geometry

can be more accurately represented in ANSYS Workbench.

Transfer Enhancements

The transfer capabilities between ANSYS DesignModeler and ANSYS Mechanical

have been enhanced, most notably:

• When transferring an ANSYS DesignModeler application to ANSYS Mechan-

ical for the first time, the order of bodies seen in ANSYS DesignModeler is

retained in ANSYS Mechanical.

• Previously new bodies were created in ANSYS DesignModeler when

multibody parts, with shared topology created via the automatic method,

included overlapping surface bodies. Now the overlapping bodies are

transferred as separate bodies to ANSYS Mechanical instead of being asso-

ciated with one of the original bodies.

• Vertex persistence in ANSYS Mechanical for concept parts transferred from

ANSYS DesignModeler has been improved although when refreshing older

databases in ANSYS Mechanical, vertex persistence might break the first

time. Once the vertex persistence is corrected the databases will persist for

further refresh operations.



Direct Entity Selection for Modeling Operations

Geometric entities such as faces, edges, vertices, or point feature points can now

be selected as input for the modeling operations. These operations include the

Extrude, Revolve, Sweep and Skin/Loft features.

Face Thickness Displayed by Color

Via the Graphics Options toolbar or the View menu, you can display face thickness

using colors. Each thickness is represented by a separate color.

Display Edge Direction

Via the Graphics Options toolbar or the View menu, you can display a model’s

edge directions. The direction arrow appears at the midpoint of the edge.

Automatic Promotion of Parameters

All parameters can now be automatically published to ANSYS Workbench when

geometry is imported or refreshed from the CAD source. The default for this

property is no, meaning all parameters are not published by default.

Display Vertices Option

Via the Graphics Options toolbar or the View menu, you can view all the vertices

in the model.

Toolbar Customization

Feature toolbars have been separated into smaller groups, making it easier to

access many features/tools directly from the toolbars.

Select Mode Functionality

Single Select and Box Select are now more quickly accessible by toggling the

right mouse button down, followed by the left mouse button down.

Hot Keys

New hot keys (short cut) are available for frequently repeated operations:




• F3: Apply

• F4: Cancel

• F6: Toggle display (shaded+edges/shaded/wireframe)

• F7: Zoom to Fit

• Ctrl-A: Select All

• Ctrl-P: Toggle Point selection filter

• Ctrl-E: Toggle Edge selection filter

• Ctrl-F: Toggle Face selection filter

• Ctrl-B: Toggle Body selection filter

• Ctrl-Z: Undo (sketching mode only)

• Ctrl-Y: Redo (sketching mode only)

• Ctrl-C: Copy (sketching mode only)

• Ctrl-X: Cut (sketching mode only)

• Ctrl-V: Paste (sketching mode only)

Electronics Tool Enhancements

The Electronics tool, available for preparing the model for thermal-flow analysis

using IcePak, is significantly enhanced with following improvements:

New ANSYS IcePak Object Types Three new IcePak object types are supported:

• Axis Aligned Annular Cylinder: a cylindrical solid body with a concentric

cylindrical through-hole whose axis is aligned with one of the coordinate

planes.

• Axis Aligned Conical Frustum: a solid conical frustum with the axis of the

conical surface aligned with one of the coordinate axis.

• Axis Aligned Annular Conical Frustum: a solid conical frustum or cylinder

with a concentric cylindrical or conical through-hole whose axis is aligned

with one of the coordinate planes.

Enhanced Support for Polygonal Extrusion Level 2 geometry simplification

now supports polygonal extraction for parts with circular segments. Controls

available include:



• Points on Arc: specifies the number of interior points that are placed at an

equal distance within the curved edges in the polygonal profile.

• Length Threshold Percentage: specifies the threshold value to represent

the curved edges using interior points.

• Enforce Axis: forces the DesignModeler application to look for polygon

profiles only in the normal plane of the selected axis.

Electronics Tool Usability Improvements

• Part Structure Transfer to ANSYS IcePak: DesignModeler’s part-body

structure is retained during ANSYS DesignModeler to ANSYS IcePak model

transfer.

• Rename Multiple Bodies in a Single Step: You can rename selected nodes

in the Tree Outline as a group. The single-step process is accessible via the

context menu.

• Display of IcePak Icons for IcePak Bodies: DesignModeler now supports

IcePak icons in the tree outline for bodies converted into IcePak objects.

Shaft Feature

The Import Shaft Geometry feature has been introduced as part of ANSYS

DesignModeler. The feature uses a text file to generate a collection of line bodies

with circular or circular tube cross sections. You may specify the units of the data

in the text file and a base plane to orient the line bodies it creates.

Skin/Loft Property Enhancement

The Profile Selection method property in the Skin/Loft feature includes two new

options to select either all or individual profiles.

Automatic Freeze during Slicing

Active bodies are now frozen automatically during use of the Slice feature, Slice

Targets property, and the Slice Material operation. In addition, ANSYS Design-

Modeler no longer requires that a model be completely frozen before allowing

slice operations.




AutoCAD Support

ANSYS DesignModeler now supports the AutoCAD file format in both plug-in

(requires CAD system to be running) and pseudo-reader (does not require CAD

system to be running) modes.

Error Messages

Error reporting has been improved for the Share Topology feature and Import/At-

tach features to give more detailed error information.

Geometry Interfaces Update for New CAD Releases

Geometry interfaces are updated to support new CAD releases including:

• AutoCAD 2012

• Autodesk Inventor 2012

• Creo Elements/Direct Modeling 18.0

• Creo Parametric (formerly Pro/ENGINEER) 1.0

• NX 8.0

• Parasolid 24.0

• Solid Edge ST4 (104)

• SolidWorks 2011

• ANSYS SpaceClaim Direct Modeler 2011+

• Teamcenter 8.0, 8.1 and 8.3

New File Based CAD Readers

File based CAD readers are expanded to include support for additional CAD

systems

• NX

• Autodesk Inventor

• SolidWorks



CATIA V5 R21 Support

CADNexus Capri gateway for CATIA V5 is updated to include support for CATIA

V5 R21.

2.3. TurboSystem Release Notes

TurboSystem is a set of software applications and software features that help

you to perform turbomachinery analyses in ANSYS Workbench.

ANSYS TurboGrid is a meshing tool for turbomachinery blade rows. The release

notes for ANSYS TurboGrid are given at “ANSYS, Inc. Release Notes > "TurboGrid

Release Notes"”.

CFX-Pre, a CFD preprocesor, and CFD-Post, a CFD postprocessor, are part of the

ANSYS CFX product. Both of these products have Turbomachinery-specific fea-

tures. The release notes for CFX-Pre are given at “ANSYS, Inc. Release Notes >

"CFX Release Notes"”. The release notes for CFD-Post are given at “ANSYS, Inc.

Release Notes > "CFD-Post Release Notes"”.

Release notes for the remaining TurboSystem applications are provided in the

following sections:

• BladeGen (p. 13)

• BladeEditor (p. 14)

• Vista CCD (p. 15)

Note

After reviewing these release notes, you are encouraged to see Usage

Notes, which describes some known TurboSystem-related workflow

issues and recommended practices for overcoming these issues.

2.3.1. ANSYS BladeModeler

2.3.1.1. BladeGen

BladeGen is a geometry-creation tool for turbomachinery blade rows.



TurboSystem Release Notes

2.3.1.1.1. BladeGen New Features and Enhancements

• Vista AFD is no longer available from BladeGen, after having moved to Workbench.

For details, see "Vista AFD".

2.3.1.1.2. BladeGen Limitations

• For the Quasi-Orthogonal Area Graph, in some special cases involving sharp

bends in the hub or shroud, the Quasi-Orthogonal Area with the blades can give

incorrect results. This is the case regardless of the flow angle correction. The area

curves without the blades are not affected by this defect.

2.3.1.2. BladeEditor

ANSYS BladeEditor is a plugin for ANSYS DesignModeler for creating, importing,

and editing blade geometry.

2.3.1.2.1. BladeEditor New Features and Enhancements

• Camberline Thickness Mode

The workflow has been changed so that camberline/thickness definitions

now appear exclusively as sub-features of the Blade/Splitter feature. For

details, see Blades made using Camberline/Thickness sub-features in the

TurboSystem User Guide. The splitter camberlines can now reference data

from the main blade. For details, see Camberline/Thickness Definition Sub-

features of Independent Splitters in the TurboSystem User Guide.

• Auxiliary view

This view now shows meridional curvature for the hub and shroud. For de-

tails, see Meridional Curvature View in the TurboSystem User Guide.

• Added Blade Clearance properties to the Blade feature. For details, see Blade

Feature in the TurboSystem User Guide.

• User-defined layers

You can create layers based on sketch curves. For details, see FlowPath

Feature in the TurboSystem User Guide. Data layers in BladeGen models are

converted to user-defined layers when loaded into BladeEditor.

• BladeEditor has been made consistent with BladeGen in that, by default, both

now read and write files that express angles in radians instead of degrees.



2.3.2. Vista CCD

Vista CCD is a program for the preliminary design of centrifugal compressors.

See "TurboSystem: Vista CCD" for details on using this new version of Vista CCD.

Vista CCD was developed by PCA Engineers Limited, Lincoln, England.

2.3.2.1. Vista CCD New Features and Enhancements

Vista CCD has been improved to work for a wider range of operating conditions.

Enhancements to Vista CCD:

• Real gas capability was enhanced for "highly imperfect" gases.

2.3.2.2. Vista CCD Incompatibilities

The new version of Vista CCD is not backwards-compatible with versions earlier

than Release 13.0. You must use the earlier versions if you want to view the Vista

data for previous BladeGen models.

2.4. Meshing Application Release Notes

This release of the Meshing application contains many new features and enhance-

ments. Areas where you will find changes and new capabilities include the fol-

lowing:

Resuming Databases from Previous Releases

Note the following when resuming databases from previous releases:

• Upon import of a legacy model into release 14.0, suppressed virtual topology

entities will be deleted. This includes any virtual topology entities that were

suppressed manually (for example, by right-clicking on the virtual topology entity

in the Tree Outline and selecting Suppress from the context menu), but it does

not include virtual topology entities that are suppressed because the body con-

taining them is suppressed. If entities are deleted, a warning message will be is-

sued advising you to import the model into an earlier release, unsuppress the

affected entities, and save the model for use in release 14.0. Also see the Virtual

Topology section below.



Meshing Application Release Notes

• At release 13.0, all mesh connections were pre, but at release 14.0, all mesh

connections are post. Upon import of a release 13.0 database into release 14.0,

all mesh connections are updated accordingly.

• When assembly meshing algorithms are used in release 14.0, Program Controlled

inflation is not supported on solid bodies. The solid bodies will not be inflated.

If you import a release 13.0 database that specifies the CutCell meshing algorithm

and Program Controlled inflation is defined on a solid body, you must either

change the Fluid/Solid designation of the solid body to Fluid or set Use Auto-

matic Inflation to None and define local inflation controls to obtain the release

13.0 behavior. Also see the Assembly Meshing section below.

• Contact regions are now resolved automatically as interfaces for use in ANSYS

FLUENT. In support of this change, if you import a legacy model with all of the

following characteristics into release 14.0, a message will be issued to advise you

that if you do not want the contact regions to be resolved, you should delete

them:

– Physics Preference is set to CFD.

– Solver Preference is set to Fluent.

– Contact regions are defined.

However, if you do want the legacy contact regions to be resolved, you must

clear and regenerate the mesh in the release 14.0 Meshing application prior

to exporting/opening the mesh in ANSYS FLUENT.

Also see the Miscellaneous Changes and Behaviors section below for re-

lated information.

• The logic for translating material properties of bodies/parts to continuum zone

types when a mesh is exported to ANSYS FLUENT format has changed in release

14.0. Body/part names and Named Selection names are no longer considered.

However, upon import of a legacy model into release 14.0, the Fluid/Solid ma-

terial property for each body will be set based on pre-14.0 rules.

Special handling of sheet bodies occurs during migration based on whether

the model is 3D (not planar in the XYZ plane) or 2D (planar in the XYZ plane):

– If 3D or in cases in which only surface mesh is being exported, migration of

sheet bodies is skipped. The pre-14.0 rules are not used to interpret the

naming of the sheet bodies, and no material properties are assigned to them.

– If 2D, pre-14.0 rules are applied to the sheet bodies as follows:



→ If Named Selections, part names, and/or body names are defined, they

are applied according to the following priority:

• Named Selections defined for the underlying faces in a sheet body.

In such cases, a message will be issued indicating the Named Selection

definition for the faces will override the Fluid/Solid material property

for the sheet body.

• Named Selections defined for sheet bodies

• Part names

• Body names

This means that when defined, Named Selections for underlying faces

take highest priority, then Named Selections for sheet bodies, then

part names, then body names. An exception occurs if a part name

would result in a material property of Solid but a body name would

result in a material property of Fluid. In such cases, the sheet body

is transferred as a Fluid.

→ If no Named Selections, part names, or body names are defined, the sheet

bodies are transferred as continuum zones and the same rules as in the

3D case are applied.

A message will be issued if the migration results in a change to the material

properties of any body, in which case you can perform a right mouse button

click and select Go To Object from the context menu to select the object

in the Tree Outline that is responsible for the message. Also see the FLUENT

Export section below.

Assembly Meshing

“Assembly meshing” refers to meshing an entire model as a single mesh process,

as compared to part- or body-based meshing, in which meshing occurs at the

part or body level respectively. If the assembly meshing Method control (de-

scribed below) is set to None, ANSYS Workbench meshing operates at the part

level, but if it is set to CutCell or Tetrahedrons, the entire assembly will be

meshed at one time using the selected assembly meshing algorithm.

Assembly meshing should be able to produce conformal mesh between parts if

their faces are overlapping.




Assemblies can also be meshed using part-based meshing methods, but in such

cases the mesher operates one part at a time, and therefore cannot mesh virtual

bodies or evaluate parts that occupy the same space.

The following enhancements have been made in support of assembly meshing

at release 14.0:

Assembly Meshing—Overview

• The Assembly Meshing group of global mesh controls is now available. You can

use one of the controls, called Method, to choose either CutCell or Tetrahedrons

as your strategy for assembly meshing. CutCell is available only in the Meshing

application, and only when Physics Preference is set to CFD and Solver Prefer-

ence is set to Fluent. Tetrahedrons is available in both the Meshing application

and the Mechanical application, regardless of Physics Preference and Solver

Preference settings.

The Tetrahedrons assembly meshing algorithm is a derivative of the CutCell

algorithm, with strengths and weaknesses similar to those of CutCell. The

Tetrahedrons method starts from the CutCell mesh and through various

mesh manipulations creates a high quality unstructured tet mesh.

Named Selections are supported for assembly meshing. However, the

mesher will not fail if a Named Selection is not protected; it will issue a

warning.

Assembly Meshing—Global Improvements

• A Fluid/Solid material property setting is now available in the Meshing applica-

tion. This property, which appears in the Details view if you select a prototype

(i.e., Body object) in the Tree Outline, allows you to control the physics that occur

on a model. It affects how material properties are translated when you export a

mesh for use in ANSYS FLUENT. Valid options are Fluid, Solid, and Defined By

Geometry. When set to Defined By Geometry, the value is based on the Flu-

id/Solid material property that was assigned to the body in the DesignModeler

application. The Fluid/Solid property also appears in the Details view if you select

a Virtual Body object in the Tree Outline, but in such cases it is always set to

Fluid (read-only). This property is not available if you are using the meshing

capabilities from within the Mechanical application.

• When setting local (scoped) sizing controls, the Body of Influence option for

Type is supported. The body of influence cannot be scoped to a line body.



• The default for Proximity Size Function Sources has been changed to Edges.

This setting is sufficient for most models.

Assembly Meshing—Virtual Bodies

In principal, there are two approaches for extracting fluid domains from CAD:

1. For internal flow, cap the inlets, outlets, and any other leakage of the solid do-

main and perform a Boolean subtraction operation inside the CAD system to

extract the flow volume.

2. For external flow, create a large external domain outside of the solid object,

perform a Boolean subtraction operation inside the CAD system, and delete

any remaining interior voids inside the solid.

However, depending on the number of solids and the quality (or “cleanliness”)

of the original CAD, these Boolean operations may fail.

Assembly meshing provides the means of extracting and meshing the flow

volume within both these scenarios in one operation, and hence eliminates the

need for the Boolean operations. To use these approaches, capping faces or

large external domains need to be created in the CAD system. These fluid domains

are represented by virtual bodies in the Meshing application. You also need to

define a coordinate system at any location inside the extracted fluid domain.

When you insert a virtual body into the Tree Outline, a Virtual Body Group,

representing the fluid type, is created with a Virtual Body as a child object. In

the Details view settings for the Virtual Body, you associate the material point

with the coordinate system.

Often, you are interested only in the fluid flow and hence the solid mesh is not

needed. The Keep Solid Mesh control determines whether the mesh for any

body marked as a solid is discarded or kept.

Since meshing all of the solids and then discarding the solid mesh would not

be efficient, you can provide the Fluid Surface in addition to the material point

inside the Virtual Body definition, thereby eliminating the need to mesh the

solid and leading to improved meshing performance by a factor of two or more.

To aid in finding all the faces that are needed to create a Fluid Surface object,

a new Extend to Connection option has been added to the Extend Selection

drop-down menu. Before you use this tool, make sure that the global size function

option Min Size/Proximity Min Size is set appropriately and that the Find

Contacts tool has been executed.




Due to missing rubber seals, bolt threading, or other simplifications, the solid

CAD may not be “watertight.” In these situations, the assembly meshing al-

gorithms can trace the leaks and display their leak paths graphically to help you

with troubleshooting.

Leakage usually occurs if any contact is larger than 1/10 of the local minimum

size. If a leak is up to 1/3 of the local minimum size, you can use contact sizing

to close the gap.

Assembly Meshing—Diagnostics Tools

• For performing diagnostics for assembly meshing problems, the Find Thin Sec-

tions and Find Contacts tools are available. These tools return lists of contact

regions based on the global size function option Min Size/Proximity Min Size,

which should be set appropriately before you invoke them. When Find Thin

Sections is executed (using RMB), each of the contact regions it returns contains

faces on the same body that will not be resolved properly based on the current

global minimum size. When Find Contacts is executed (using RMB), the tool re-

turns a list of contacts, which is used to pass feature information down to the

meshing algorithm. The Find Contacts tool is particularly useful for assemblies

in which fillets of bodies are adjacent to other bodies, forming a sharp angle.

Find Contacts will preserve the edges of these fillets independent of the feature

angle settings.

Related to these tools, the Use Range option has been added as a global

connection setting so that searches can operate on a range of values.

Assembly Meshing—Inflation

• For the CutCell algorithm, inflation is neither Pre nor Post. Rather, it may be

considered a hybrid of the two, in that the technology used is like that of the

Pre algorithm, but inflation occurs Post mesh generation. For the Tetrahedrons

algorithm, Pre inflation is used, with inflation behaviors and limitations very

similar to those of the Patch Conforming Tetrahedron mesh method.

• When an assembly meshing algorithm is being used, a mixture of global (auto-

matic Program Controlled) and local (scoped) inflation is not supported; you

must choose between the two approaches:

– For inflation on virtual bodies, you must use automatic Program Controlled

inflation; you cannot use local controls to inflate virtual bodies. Thus in gen-

eral, if you are using virtual bodies to represent flow volumes in your model,

plan to use automatic inflation. Automatic inflation is specified globally by

setting Use Automatic Inflation to Program Controlled. With Program



Controlled inflation, faces on real solid bodies will inflate into the virtual

bodies. The Fluid/Solid designation on real bodies will be respected (that is,

faces on real fluid bodies will inflate into the fluid region, but the solid region

will not be inflated).

– Alternatively, you can set Use Automatic Inflation to None and define local

inflation controls. This approach is appropriate if your model contains real

bodies that represent the fluid regions.

If any global or local inflation settings are modified and you re-mesh, only

the inflation layers are regenerated. This is true for both approaches, regard-

less of which assembly meshing algorithm is selected.

• Assembly meshing algorithms support 3D inflation only. Unlike 3D inflation for

part/body level meshing, for assembly level meshing the scoped body and the

face that you select to be the inflation boundary do not have to be on the same

part.

• By default, Gap Factor is set to 1.5 for the CutCell algorithm. For the Tetrahed-

rons algorithm, Gap Factor is set equal to the value that is specified for non-

assembly mesh methods (0.5 by default) and is updated accordingly if that value

is changed.

Assembly Meshing—Additional Tools

• The new Sharp Angle Tool lets you control the capture of features with sharp

angles, such as the edge of a knife or the region where a tire meets the road. It

can also be used for improved feature capturing in general, even if the faces

that you pick to define a control do not form a sharp angle. The Sharp Angle

Tool is available only when assembly meshing algorithms are being used and

ensures that the desired features are captured in the assembly mesh.

• Mesh groups are used to merge adjacent bodies into one body. The grouping

tells the mesher to treat certain solid parts as one part and ensures that the mesh

generated on the combined parts is associated with the mesh of the selected

master body. Mesh grouping is available only when assembly meshing algorithms

are being used. Mesh Group objects appear in the Tree Outline under the Mesh

object.

Also see the Miscellaneous Changes and Behaviors section below.

Post Pinch Controls and Mesh Connections

At release 14.0, either the pinch control feature or the mesh connection feature

can be used to join shell meshed parts after meshing.




In support of this functionality, a new option for specifying PinchBehavior is

available for local pinch controls. Edge-to-edge pinch controls can be “pre” or

“post, ” but edge-to-face pinch controls are always post. When set to Pre, pinches

are processed before face meshing, and when set to Post, pinches are processed

in a separate step after all meshing is complete.

At release 13.0, all mesh connections were pre, but at release 14.0, all mesh

connections are post. The mesh connection feature leverages the Post pinch

technology to automatically generate Post pinch controls internally at meshing

time. This technology allows mesh connections to work across parts so that a

multibody part is no longer required.

The Snap to Boundary option, which was already available for edge-to-face

pinch controls, is now supported for edge-to-face mesh connections as well.

When Snap to Boundary is set to Yes (the default) and the distance from a

slave edge to the closest mesh boundary of the master face is within the specified

snap to boundary tolerance, nodes from the slave edge are projected onto the

boundary of the master face. In addition, you have more control over the snap

type and snap tolerance. By default the snap tolerance is set equal to pinch tol-

erance, but setting the Snap Type option to Manual Tolerance lets you override

it. Alternatively, you can set Snap Type to Element Size Factor to enter a factor

of the local element size of the master topology. For edge-to-edge pinch controls

or edge-to-edge mesh connections, the snap tolerance is set equal to the pinch

tolerance internally and cannot be modified.

When used on parts and bodies that have been joined by mesh connections or

post pinch controls, the Clear Generated Data option now works as follows,

where the "base" mesh, which is stored in a temporary file, is the mesh in its

unsewn (pre-joined) state:

• If a base mesh is available, the mesh is reverted to the base mesh and the reques-

ted parts/bodies are cleared.

• If no base mesh is available, the entire mesh is cleared and a warning message

is issued. Reasons the base mesh may not be available include situations in which

you have deleted your temporary files, exported a .mechdat file for someone

else to use, or moved your project database to a different computer.

Selective Meshing (formerly Direct Meshing)

The selective meshing process (formerly known as direct meshing) has been

improved at release 14.0. You can use the Mesh worksheet to create a selective

meshing history, so that your meshing steps can be repeated in the desired se-



quence for any geometry update or re-mesh operation. You can populate the

worksheet either by recording meshing steps as you perform them or by adding

meshing steps to the worksheet manually. In each meshing step, the bodies as-

sociated with a given Named Selection are meshed. For greater flexibility, you

can activate and deactivate steps in the worksheet to control whether they are

processed or skipped during mesh generation and other worksheet operations.

The worksheet is dockable. Once you toggle it on, you can move it to the desired

location which will persist whenever the Mesh object or one of its child objects

is highlighted in the Tree Outline. For example, you may want to dock the

worksheet alongside the Geometry window, allowing you to view both at once.

Also see the Miscellaneous Changes and Behaviors section below.

Patch Conforming Meshing

A new global group of meshing controls, called Patch Conforming Options,

has been added at release 14.0. The first of these new options is Triangle Surface

Mesher, which determines which triangle surface meshing strategy will be used

by patch conforming meshers—either Program Controlled or Advancing Front.

When set to Program Controlled, the mesher determines whether to use the

Delaunay or advancing front algorithm based on a variety of factors such as

surface type, face topology, and defeatured boundaries. When set to Advancing

Front, the mesher uses advancing front as its primary algorithm, but falls back

to Delaunay if problems occur.

The Triangle Surface Mesher control has no effect on parts or bodies being

meshed with the Patch Independent Tetra mesh method. The Patch Conform-

ing Options group of controls is inaccessible when an assembly meshing al-

gorithm is selected.

MultiZone Mesh Method

The following enhancements related to the MultiZone mesh method have been

made at release 14.0:

• Improved handling of imprints. This includes imprinting through multiple bodies,

through multiple levels in the same body, and through long stretches of side

faces. Improvements have been made to submapping of cylindrical faces with

side cutouts, especially those used as side faces along the sweep path.

• Support for match controls on faces has been added, with certain limitations.




• A new Prism option is available for Mapped Mesh Type. The Prism option

generates a mesh of all prism elements for the part the method is scoped to.

This option is sometimes useful if the source face mesh is being shared with a

tet mesh, as pyramids are not required to transition to the tet mesh.

• Improved handling of edge splits.

Uniform Quad/Tri and Uniform Quad Mesh Methods

The following enhancements related to the Uniform Quad/Tri and Uniform Quad

mesh methods have been made at release 14.0:

• Edge, face, and body sizing are supported. When using edge sizing, you can

specify a Type of either Element Size or Number of Divisions. For face and

body sizing, Type is always Element Size. The Sphere of Influence and Body

of Influence options are not supported for Uniform Quad/Tri and Uniform Quad.

• The Uniform Quad/Tri and Uniform Quad mesh methods support mesh connec-

tions and pinch controls (post pinch only).

Size Function Handling

The following enhancements and guidelines relate to size function handling at

release 14.0:

• When Use Advanced Size Function is set to On: Proximity and Curvature, you

now have the option to specify a global Proximity Min Size to be used in

proximity size function calculations, in addition to specifying a global Min Size.

By default, Proximity Min Size is set equal to the default of Min Size. Any feature

that operates based on minimum element size (for example, Defeaturing Toler-

ance, Pinch Tolerance, and Find Thin Sections), will now be based on the smaller

of the two minimum size values.

When Use Advanced Size Function is set to On: Proximity, only Proximity

Min Size is available.

• In cases where you applied a hard size that is smaller than the minimum size,

there may be a poor size transition in proximity to the entity with the hard size.

To obtain a proper size transition, reduce the Defeaturing Tolerance used by

the Automatic Mesh Based Defeaturing control (or turn off Automatic Mesh

Based Defeaturing entirely).



Virtual Topology

The following enhancements related to virtual topology have been made at re-

lease 14.0:

• You can select specific regions (i.e., bodies or faces) before running automatic

virtual cell creation so that it operates on the selected regions only. The software

groups adjacent entities appropriately to form the virtual cell(s).

• To facilitate more efficient virtual topology operations, Virtual Cell and Virtual

Split Edge objects no longer appear in the Tree Outline. This provides improved

usability in cases involving very large numbers of virtual entities. The Virtual To-

pology object still appears in the Tree Outline and can be used for setting

global virtual topology options. Other enhancements described in this section

can be used for creating, deleting, and editing virtual entities.

• A new Virtual Topology Properties dialog has been implemented. You can use

this dialog to edit the properties of multiple selected virtual topology entities,

and your changes will be applied to all selected entities at one time. You can

access the dialog via right-mouse button click or by choosing the Edit button

on the Virtual Topology context toolbar.

• You can insert multiple virtual cells at one time when creating virtual cells

manually. Select one or more faces or one or more edges and from the selected

set of faces or edges, the software creates the virtual cell(s). During this process,

adjacent selected entities are grouped appropriately to form virtual cell(s), while

any single selected entity (that is, one that is selected but is not adjacent to any

other selected entity) forms its own virtual cell.

• You can select two vertices on a face to split the face, thereby creating 1 to N

virtual faces. To facilitate split face operations, you can create a virtual hard vertex,

which allows you to define a hard point according to your cursor location on a

face, and then use that hard point in a split face operation. In support of these

features, two new objects are available (Virtual Split Face and Virtual Hard Vertex).

Similar to Virtual Cell and Virtual Split Edge objects, Virtual Split Face and Vir-

tual Hard Vertex objects do not appear in the Tree Outline.

• When you define a virtual split edge by selecting Insert> Virtual Split Edge

from the context menu or by choosing Split Edge on the Virtual Topology

context toolbar, the split location is set to 0.5 by default. You can change the

value later by using the Virtual Topology Properties dialog, or by modifying

the edge split interactively as described below.




• Using the F4 key, you can interactively adjust previously defined virtual split

edges and virtual hard vertices. In either case, any virtual split faces affected by

the change are adjusted accordingly.

• A Statistics group has been added to the Virtual Topology Details view. Here

you can view counts of the virtual faces, virtual edges, virtual split edges, virtual

split faces, virtual hard vertices, and total virtual entities that exist within the

model.

• The virtual topology feature is more flexible, with the addition of more options

for deleting virtual topology entities. Regardless of which object is highlighted

in the Tree Outline (for example, Geometry, Virtual Topology, Mesh, etc.), you

can now select virtual entities in the Geometry window, right-click, and delete

the selected virtual entities (and dependents if applicable). When the Virtual

Topology object is highlighted, you have the additional option of selecting the

Delete button on the Virtual Topology context toolbar. You also have the option

to delete all virtual entities at one time—either by RMB click on the Virtual To-

pology object in the Tree Outline, or by RMB click on any virtual topology entity

in the Geometry window.

• Left/right arrow buttons have been added to the Virtual Topology context

toolbar so that you can cycle through virtual topology entities in the sequence

in which they were created and display them in the Geometry window.

• Suppression of virtual entities has been disabled.

POLYFLOW Export

The following enhancements related to POLYFLOW Export have been made at

release 14.0:

• Named Selections are supported. When you export a mesh file from the Meshing

application to POLYFLOW format (File> Export from the Meshing application

main menu, then Save as type POLYFLOW Input Files), the Named Selections

that were defined will appear in the exported mesh file.

• PMeshes are supported. You can create Named Selections to specify specialized

modeling conditions on edges for 2-D or shell geometry; and edges and faces

for 3-D geometry. The exported mesh file will contain the mesh nodes and ele-

ments associated with those Named Selections in PMesh format.

CGNS Export

Release 14.0 provides greater control over CGNS export operations. Using the

Options dialog box, you can choose a file format (ADF or HDF5) and CGNS



version (3.1, 3.0, 2.5, 2.4, 2.3, 2.2, or 2.1). The defaults are ADF and 3.1 respect-

ively.

FLUENT Export

The following enhancements related to FLUENT Export have been made at release

14.0:

• Body/part names and Named Selection names are no longer considered when

assigning continuum zone types for use in ANSYS FLUENT. For databases created

in release 14.0, the following logic is used to translate the material properties of

the bodies/parts in the model to continuum zone types:

1. If Physics Preference is set to CFD and you do not set the Fluid/Solid

material property as described in steps 2 and 3 below, all zones are exported

to ANSYS FLUENT mesh format as FLUID zones by default.

2. The Fluid/Solid material property assigned in the DesignModeler application

is considered next. This setting overrides the default behavior described in

step 1.

3. The Fluid/Solid material property assigned in the Meshing application is

considered next. This setting overrides the default behavior described in

step 1 and the Fluid/Solid material property assigned in the DesignModeler

application.

For information about this change and migration of legacy models into re-

lease 14.0, see the Resuming Databases from Previous Releases section

above.

• Using the Options dialog box, you can choose either the Binary or ASCII file

format for greater control over FLUENT export operations.

• At the time of mesh export, a boundary zone type of INTERFACE is now assigned

automatically to the contact source and contact target entities that compose

contact regions. When reading the mesh file, ANSYS FLUENT creates a mesh in-

terface for each contact region automatically. For related information, also see

the Resuming Databases from Previous Releases section above, and the Mis-

cellaneous Changes and Behaviors section below.

Shell Meshing Improvements

Better quad smoothing occurs at release 14.0:

• Improved Laplacian smoothing




• More ruled mesh on rectangles, etc.

Miscellaneous Changes and Behaviors

The following changes and behaviors are new at release 14.0:

• The Meshing Options panel has been removed.

• The CutCellMeshing group of global mesh controls has been renamed the As-

sembly Meshing group. One of the controls, which used to be called the Active

control, has been renamed the Method control. It lets you choose the CutCell

or Tetrahedrons method for assembly meshing.

• The default for Proximity Size Function Sources has been changed to Edges.

• For assembly meshing algorithms in release 14.0, Named Selection names for

internal face zones are not interpreted. In cases where two enclosed voids share

a face, the face zone is assigned type WALL automatically regardless of whether

a Named Selection has been defined for the face. In these cases, the mesh gen-

eration cannot cross any boundary so you must define a virtual body with ma-

terial point for each flow volume void in order for the volumes to be meshed.

This is a change from release 13.0, in which Named Selection names matching

FAN, RADIATOR, or POROUS-JUMP were interpreted as FAN, RADIATOR, and POR-

OUS-JUMP face zone types respectively, so that when two enclosed voids shared

such a face, mesh generation did not stop at the boundary.

• The direct meshing feature has been renamed selective meshing. In support of

this change, the Allow Direct Meshing option on the Options dialog box is now

Allow Selective Meshing. Also see the Selective Meshing (formerly Direct

Meshing) section above.

• Virtual Cell and Virtual Split Edge objects no longer appear in the Tree Outline.

In addition, suppression of virtual entities has been disabled. Refer to the Virtual

Topology section above for related information.

• The Virtual Topology object that appears in the Tree Outline represents all

definitions of virtual face or virtual edge groups, and all definitions of virtual split

edges, virtual split faces, and virtual hard vertices within a model. As described

above, individual objects for these virtual entities do not appear in the Tree. If

a geometry operation invalidates a virtual entity, refreshing the geometry no

longer causes the Virtual Topology object in the Tree Outline to become under-

defined. For example, if you include a fillet and one neighboring face in the

creation of a virtual cell, but later remove the fillet from the CAD model and re-

fresh the geometry, that individual virtual cell will become underdefined (as it

only includes the one neighboring face), but it will not be deleted, and there



will be no change in the Tree Outline. If in a later operation, the fillet is re-added

to the CAD model and refreshed, the virtual cell will be restored. When a virtual

entity becomes underdefined due to a geometry operation, a message is issued

indicating that the last operation resulted in an incomplete virtual entity and

advises you to check your model.

• The Send to Solver option, which used to be available in the Mechanical applic-

ation only, is now available in the Meshing application as well. When you are

defining Named Selections, the Send to Solver option lets you control whether

the selected Named Selection is passed to the solver. The default is Yes for

Named Selections that you create, and No for Named Selections that are gener-

ated automatically by the Mesh worksheet.

• Pre-inflation with patch conforming is now 20–30% faster.

• When you export a mesh to ANSYS FLUENT mesh format, contact source and

contact target entities in contact regions are now resolved as INTERFACE zones

and mesh interfaces are created for the contact regions automatically. This

eliminates the steps required in previous releases, which involved defining Named

Selections for the contact regions in the Meshing application and then in ANSYS

FLUENT, ensuring the INTERFACE zone type was assigned properly and creating

a mesh interface for each contact region manually. For related information, also

see the Resuming Databases from Previous Releases and FLUENT Export

sections above.

• The Smooth Transition option for the Inflation Option control is now supported

when defining 2D local inflation.

• The Auto Detect Contact On Attach option, which used to be available in the

Options dialog box within the Mechanical application, has been moved. This

option, which controls whether contact detection is computed upon geometry

import, can now be accessed by selecting Tools> Options from the ANSYS

Workbench main menu, and then selecting either the Mechanical or Meshing

category as appropriate. The option is enabled by default in both applications.

2.5. Mechanical Application Release Notes

This release of the Mechanical application contains all of the capabilities from

previous releases plus many new features and enhancements. Areas where you

will find changes and new capabilities include the following:



Mechanical Application Release Notes

Incompatibilities and Changes in Product Behavior from

Previous Releases

Release 14.0 includes several new features and enhancements that result in

product behaviors that differ from previous releases. These behavior changes

are presented below.

• By default, a model's node and element numbering will not be condensing when

actions such as body suppression occurs. Thus gaps in numbering can occur in

the solver input file. This change was done in order to preserve the integrity of

nodal based named selections. The ability to compress the numbers can be

achieved by a setting in the Details view of the Mesh Numbering folder.

• The default values used for contact Formulation, Update Stiffness, and Behavior

have changed. The new defaults were chosen to give best solution to a wide

range of contact situations. See Connection Enhancements below for further in-

formation.

• The Auto Detection Value for a contact pinball region is only available for contacts

that are generated automatically.

• The Bending option for the Shell Entry will not be available in the Stress/Strains

details view, however you can calculate this result using User defined results.

For a more meaningful result, see the new Bending and Membrane Stress Results.

• An Imported Body Temperature object in a 3D analysis no longer supports

scoping surface bodies with other geometry types. You will now be required to

create a separate Imported Body Temperature object for surface bodies. This

change was made to support applying temperatures to the Top, Bottom, or Both

face selections of surface bodies.

• When using an Imported Body Temperature or an Imported Heat Generation

object to transfer and apply loads from an upstream Mechanical analysis, the

following changes have been made to the Data View worksheet to allow for

more efficient data transfers:

– The addition or removal of rows in the worksheet is no longer controlled by

the program. You can add rows in the worksheet to specify additional data

for a different analysis time.

– When resuming legacy databases, rows in the worksheet will be removed if

the Source Time value of the row matches that of the previous row. This has

been done to prevent importing redundant data.

– The Active column will no longer be available for activating or deactivating

the load at different steps. Activation or deactivation of these loads can now



be done from the Graph or Tabular Data window of the object. Legacy

databases will be migrated to handle this change.

• The Auto Detect Contact On Attach option, which used to be available in the

Options dialog box within the Mechanical application, has been moved. See

Miscellaneous Changes and Behaviors in the Meshing Application Release

Notes for details.

• In an effort to reduce disk space usage, by default, Nodal Forces are not written

to the result file. However, this output is required to perform post-processing

tasks on the results for most contact force reactions. This default setting can be

changed under the Output Controls category of the Mechanical Application

Options dialog box (Tools>Options).

• By default, changes to solution level command objects will not invalidate an up-

to-date solution.

• Following the import of a Load History, the Magnitude field displays the label

"Tabular Data". If this Load History data is duplicated, the newly created data is

independent of the original load.

The Import Load History feature has undergone a behavior change. In

prior releases, the name of the imported Load History was displayed in the

Details view Magnitude field, reflecting an object in memory. If this load

was duplicated, the new duplicate showed the same name because it was

the same object in memory. Any change to either object’s tabular data

changed the underlying objects data and therefore each Load History was

changed – they used the same data. Now, this field displays the label/name

“Tabular Data” and duplications are unique and independent of one another.

• Harmonic Analysis: thermally induced harmonic loading is now ignored by all

Harmonic Analysis.

• Random Vibration Analysis and Response Spectrum Analysis: In prior releases,

an effective material damping ratio can be defined via Damping Factor (β) in

Engineering Data. In release 14.0, the Damping Factor (β) has changed to provide

a material-dependent stiffness coefficient based damping, which is not supported,

and is ignored in solution. As a result, differences in the solution are therefore

observed between the prior releases and the release 14.0 when the analysis is

cleared and re-solved. Currently, there is no equivalent damping behavior sup-

ported in the release 14.0. To have an equivalent damping behavior in a Modal

Analysis using release 14.0, issue the Command Snippet mp,dmpr.




General Enhancements

The following general enhancements have been made at release 14.0:

• Support for Cyclic Symmetry on Surface Bodies. Analyses that include cyclic

symmetry can now be performed on surface bodies as well as solid bodies.

• Expanded Criterion Based Named Selections. More options have been to added

for creating named selections by criteria (Worksheet Scoping). Additional options

include:

– Criterion based on radius

– Ability to build up selections from other Named Selections.

– Tolerance used for numerical evaluation.

– Whether a row is included as a part of the criterion.

– Implementation of Materials as Criterion.

– Implementation of Smallest and Largest as available Operators.

• Mesh Based Named Selections. Mesh based Named Selections are available as

an alternative to geometric based selections and include the following features:

– Scope Named Selections based upon things such as interactive picking, node

Ids, location, midside nodes, and corner nodes.

– Convert geometric Named Selection to mesh based Named Selection using

the Convert To option.

– Apply the mesh based Named Selections to certain boundary conditions and

results.

– View properties of the selection in the Selection Information Window or Export

to a file.

Performance Enhancements

Release 14.0 has given special attention to the performance of Mechanical in

various areas in order to provide a better responding product for both small and

large models:

• Improved application start time. Mechanical is now preloaded when a Mech-

anical system is detected in the schematic. This can result in a significant reduction

of fixed cost overhead when opening Mechanical through the "Edit" command.

For example, an "Edit" of a simple model can be as more than 10 times faster.



• Better system performance when postprocessing large result files. Prior to

release 14.0, if the result file was much larger than the amount of physical memory

on the computer, severe performance degradation could happen when evaluating

results, especially when multiple result sets were present. Mechanical has changed

how it reads result files from disk which has addressed this degradation.

• Creation of objects that scope to a large number of entities (on the order of

thousands) has been improved. Additionally the database resume time for an

"Edit" operation with large numbers of entities in the tree or scoping has been

improved.

• Improvements for Imported Loads.

– Faster graphics response. The time to display contours for an Imported

Load has been improved. Speedups of a factor of 2-3 can be seen on larger

models.

– Faster save/resume times. The time required to save and resume Imported

Loads has been made significantly faster. For example, an Imported Load

that took 20 seconds to save and 10 seconds to resume in release 13.0 now

saves in 3 seconds and resumes in less than 1 second. For larger models,

speedups of a factor of 8-10 are now achievable for save and a factor of 15

and greater for resume.

– Improved memory usage for save/resume. Memory usage when Imported

Loads are saved or resumed has been greatly reduced. Improvements of a

factor of 15 or more can been seen.

• Improved Automatic Contact Detection. Automatic contact detection speeds

have increased. For models where a large number of contacts are created, im-

provements of a factor of two or more can be seen.

• Faster weight-calculation time for Triangulation and Distance Based Average

mapping. Triangulation and Distance Based Average weighting calculation times

have improved by utilizing multiple cores. For larger meshes utilizing 8 cores, a

3 to 4 times speedup can be seen.

Analysis Enhancements

The following analysis enhancements have been made at release 14.0:

• Damped Modal Analysis Results. Results for damped modal analyses are now

available directly in Mechanical, including, for a damped analysis, the option to

allow or ignore the time decay animation for complex modes.




• Transient Response Analysis Using Linked Modal Analysis System. A transient

structural analysis using the Mode Superposition method can now be accom-

plished by linking a Transient Structural analysis system to an existing Modal

analysis system on the Project Schematic. This new solution methodology can

result in much faster solution times for a linear transient structural analysis.

• Rotordynamics. A type of modal analysis to analyze dynamic characteristics of

rotating systems with the effects of damping, Coriolis, and different rotational

velocities. The analysis helps you produce Campbell plots to identify critical

speeds. It is supported for all body types; solid, shell and line bodies, but limited

to single spool systems.

• MSUP Harmonic Analysis. You can now perform the Mode Superposition har-

monic analysis linked to a pre-stressed modal analysis.

• Double precision is now the default for Explicit Dynamics analyses.

• Composites. Mechanical now has support for modeling layered shells (compos-

ites) for both Mechanical APDL and Explicit solvers. Features include:

– Engineering Data Support for orthotropic strength material properties

– A Layered Section Object to define and setup simple layered shells

– Support for Imported Layered Sections from external sources such as ANSYS

Composite PrepPost (ACP)

– Post processing on a per layer basis

• The following features are now supported for Explicit Dynamics 2D Plane Strain

Analyses:

– Coordinate Systems

– Initial Condition - Velocity and Angular Velocity

– Inertial Loads - Acceleration and Gravity

– Supports (Constraints) - Fixed Support, Displacement, Velocity

– Loads- Pressure, Force, Hydrostatic Pressure

– Connections - Frictional/Frictionless for Manual Contacts and Body Interactions

– Geometry

– Symmetry

– Results/Probes

– Analysis Settings

– Axisymmetric Analysis



Geometry Enhancements

The following geometry enhancements have been made at release 14.0:

• Compare Parts on Update. Can now be set to Associative or Non-Associative.

• Searching Faces With Multiple Thicknesses. Faces with multiple thicknesses

can now be easily identified.

• Line Body Definition Extended to Pipes. Line bodies can now optionally

modeled as pipes or beams. Modeling as pipes allows for specialized pipe loading

as well as options to account for cross section distortion.

• External Thickness Import. This feature enables you to import and map X, Y, Z

thickness data for a 3D surface body or a 2D plane stress body.

Contact and Connection Enhancements

The following contact and connection enhancements have been made at release

14.0:

• Expanded Contact to Line Bodies. Edges and vertices of line bodies can now

be scoped to the contact side of a Contact Region.

• Expanded Support for Normal Lagrange Formulation. The Normal Lagrange

contact formulation is now available for all contact regions regardless of scoping

type or underlying geometry.

• Stabilization Damping Factor. The Damping Stabilization Factor is now available

to damp relative motion and provides a certain amount of resistance to reduce

the risk of rigid body motion because of open contacts.

• Program Controlled Defaults Added To Behavior Contact Property. The Be-

havior contact property now includes a Program Controlled default setting that

automatically adjusts depending on the presence of rigid body faces (3-D) or

edges (2-D).

• Program Controlled Defaults Added To Formulation and Update Stiffness

Contact Properties. Formulation and Update Stiffness properties now each in-

clude Program Controlled default settings that automatically adjust depending

on the presence of rigid body contacts.

• Contact Detection. Nodal detection is now supported for 3D face-face contacts

and 2D edge-edge contacts.

• Joint Availability. Joints are now available for use in harmonic, random vibration,

and response spectrum analyses.




• Mesh Connections Common to Selected bodies. This new option highlights the

mesh connections that are common to the bodies selected in the Graphics

viewer.

• Mesh Connection Across Parts. The Mesh Connection feature leverages the

Post Pinch technology to automatically generate Post Pinch controls internally

at meshing time. This technology allows Mesh Connections to work across parts

so that a multi-body part is no longer required.

Graphics Enhancements

The following graphical enhancements have been made at release 14.0:

• Selection Information Window. A new window can now be displayed that

provides an efficient way to obtain geometric information on selected items in

the model.

• Viewing Line Body Cross Sections as 3-D Geometry. A feature has been added

to the View menu that displays a line body with defined cross sections in 3-D

geometry.

• Show Mesh. Displays the model’s mesh regardless of the selected tree object.

• Graphical Based Node Selection. Nodes can now be selected in the graphics

view. Additionally, there are several selection modes available to choose the

desired nodes.

• Show Coordinate Systems. Displays all of the Coordinate Systems that are asso-

ciated with the model.

• Viewing and Exporting Finite Element Connections. The new FE Connections

Visibility option, Draw Connections Attached To All, allows you to display All

Nodes associated with Solution Information or to view nodes scoped to a Named

Selection. Connections can also be viewed as Lines or as Points.

• Display Edge Direction. You can now display model edge directions.

• Create Section Plane. You can now create a section plane on your model that

is based on a predefined Coordinate System.

Loads/Supports/Conditions Enhancements

The following loads/supports/conditions enhancements have been made at re-

lease 14.0:



• Pipe Pressure for Line Bodies. Pressure can now be applied to line bodies

defined as pipes. The Pipe Pressure load can be applied as a constant, tabular,

or function load.

• Pipe Temperature for Line Bodies. Temperature can now be applied to line

bodies defined as pipes. The Pipe Temperature load can be applied as a constant,

tabular, or function load.

• Direct FE is a new Menu of options in the Mechanical Application that contains

specific Finite Element (FE) boundary conditions in the form of forces, supports,

and conditions, and includes:

– Nodal Orientation. A nodal coordinate system can be created for later use

in applying nodal rotations to displacements. This is represented by a Orient-

ation object and is available in the Direct FE menu.

– Nodal Force - A force can now be applied to individual nodes or a group of

nodes by scoping Nodal Force to a node-based Named Selection.

– Nodal Pressure - A pressure can now be applied to individual nodes or a

group of nodes by scoping Nodal Pressure to a node-based Named Selection.

– FE Displacement - A node-based displacement can now be applied.

– FE Rotation - A fixed rotation can now be applied to the nodes of a body.

• Lock at Load Step. A joint can now be locked at a specific load step during a

multi-step analysis. This feature is available for both a static or a transient analysis.

• PSD Loading to Multiple Remote Displacements (and Fixed Supports). For a

Modal Analysis, you can now apply a PSD Excitation load to all remote displace-

ments or to all remote displacements and all fixed supports.

• Ansoft-Mechanical Data Transfer. Imported Loads from HFSS, Maxwell, or Q3D

now support the ability to import data from multiple times/frequencies and apply

them at different times using a single Imported Load object.

• Mechanical-Maxwell Stress Feedback. Deformation results can now be exported

from a structural analysis in Mechanical and used in a Maxwell analysis.

• Activation/Deactivation Support for Imported Loads. Imported loads can now

be activated or deactivated on a step basis from the Graph or Tabular Data

window of the object.

• Heat Flux and Heat Generation Import from External Files. Heat Flux and Heat

Generation data, specified in the External Data system, can now be imported

and applied in a steady-state or transient thermal analysis.




• Imported Body Temperature Loads Enhanced for Surface body Selections. Tem-

peratures imported into a structural analysis can now be applied to the Top,

Bottom, or Both face selections of surface bodies.

• Convection. A convection load (film coefficient and ambient temperature) can

be applied as a tabular load or a function of x or y or z and/or time.

Mapping Enhancements

The following mapping enhancements have been made at Release 14.0:

• Scan For File Changes, a context menu option on an External Data System's

Setup cell, checks each Data Source file and validates that inputs are correct.

• Named Selection Creation. Automatic named selection creation for unmapped,

mapped, and outside nodes.

• Mapping Settings. Imported loads settings have been changed:

– Triangulation. Weighting setting Radial Basis Functions has been changed

to Triangulation to better describe the technique used in calculating source

point load contributions.

– Distance Based Average. A new weighting option Distance Based Average

has replaced Closest Point allowing input from the user to specify how many

closest points to use when calculating source point contributions.

Databases from previous releases with Closest Point weighting will be

migrated to Distance Based Average with the Advanced setting Number

of Points set to 1.

Better control of outside nodes during weight calculation. Nodes

found outside the boundaries of the surface/volume elements created

during mapping can now be handled using Distance Based Average

or Projection techniques.

– Kriging Weighting Type. Kriging is a regression-based interpolation technique

that assigns weights to surrounding source points according to their spatial

covariance values and can provide for smoother mapping compared to other

weighting techniques.

• Validation. A new Validation object has been added to help in determining the

quality of the mapping.

• Multiple File Inputs. Importing loads from upstream External Data system con-

taining multiple data files. See External Data in the Workbench User Guide and

External Data Import in the ANSYS Mechanical Application User's Guide for details.



• New Source Geometry Analytical Transformation Capabilities. Analytical

Transformation of source point locations using scale factors or functions. This

feature can be useful to help account for differences between the source and

target geometry.

• Export. Imported data (loads and thicknesses) can be exported to a file.

• Shell Thickness Factor. When mapping data from an External Data system onto

surface bodies, a new Shell Thickness Factor property allows you to account for

the thickness at each target node, and consequently modify the location used

for each target node during the mapping process.

Solution Enhancements

The following solution enhancements have been made at release 14.0:

• Save Project Before and After Solution. As a safeguard in protecting a Work-

bench database, a project can now be saved before a solve is requested as well

as after it is solved, before postprocessing.

• Restart Enhancements

– Loads values can be modified. Load values for most boundary conditions can

now be modified.

– Nodal forces and pressures can be added. Nodal Force and Nodal Pressure

objects can be created without loss of restart points.

• Improved License Management for RSM Jobs There is a new Workbench

preference, Release License for Pending Jobs, which enables you to control

when the Mechanical application holds its license during batch mode operations

while the Solution cell is in the pending state. Releasing the license may lengthen

the time required to perform the batch run. See Mechanical for details.

• Expanded Output Controls: The output controls have been expanded and now

support controls such as nodal forces, miscellaneous records, and the maximum

number of results sets to write.

• Distributed Solver For Pre-Stress Modal Analysis. Pre-stress modal analysis

can now be performed via the Distributed solver option (DANSYS) when using

the MAPDL solver.

• License Queuing. You may now instruct the MAPDL solver to wait for an available

license by using a configuring settings when solving remotely via RSM.

• Post Processing Commands. You can now add or modify solution level command

objects for a solved analysis without invalidating your existing solution.




Results Enhancements

The following results enhancements have been made at release 14.0:

• Display Finite Element Beams, Weak Springs and Constraint Equations. The

Solution Information object now includes properties to control the ability to

display internal beams, weak springs and constraint equations that are generated

during solution.

• Results Scoping Extended to Meshing Entities. Using criteria based named

selections, scoping for several results is now available on underlying meshing

entities, in addition to geometric entities.

• Forces/Moment Reactions . Force Reaction probes and Moment Reaction probes

are now available for use in Harmonic and Modal analyses. In Random Vibration

and Response Spectrum analyses, they can only be scoped to Remote Displace-

ment boundary condition.

• Bending and Membrane Stresses. Two new result objects, Bending Stress and

Membrane stress, are added to calculate membrane and bending stresses and

strains. These results are available only when you solve using the Mechanical

APDL solver for surface bodies and solid bodies that are meshed using the thin-

solid option.

• Force Reaction Probe Support for Cylindrical Coordinates. Force Reaction

probes can now be displayed in either cylindrical or Cartesian coordinate systems.

• PSD Probes Scoping Extended to Remote Points. Scoping for Response PSD

probes is now available at remote points.

• Duplication for User Defined Results. User defined results can now be duplic-

ated, with and without the result, and across analysis systems.

• Force Reaction Result Trackers. Force Reaction result trackers that can be

scoped to boundary conditions and geometry are available for explicit dynamics

analyses. Geometry scoped Force Reaction trackers can show results for the fol-

lowing force components:

– Support - specifies that the tracker show results for the forces that will be

generated due to supports that are present in the model.

– Euler/Lagrange Coupling - specifies that the tracker show results for the forces

exerted by any material in bodies assigned with an Eulerian reference frame

that interact with the scoped region.

– Contact - specifies that the tracker show results for the total force resulting

from the contact forces acting on the scoped area.



– All - specifies that the tracker show results for the sum of all three compon-

ents.

• Design Assessment. The following enhancements have been made to the Design

Assessment system:

– The Design Assessment system can now accept upstream connections from

the following systems: Static Structural, Modal, Harmonic Response, Random

Vibration, Response Spectrum, Explicit Dynamics and Transient Structural.

Solution Combination can be performed with Static Structural, Modal, Har-

monic Response, Random Vibration, Response Spectrum and Transient

Structural systems.

– Additional BEAMST results are available in the DA Result object when the

BEAMCHECK assessment type is specified.

– FATJACK (within Design Assessment) enhanced for additional analysis types:

Stress History, Spectral, Deterministic.

– Units support for attribute input.

– Script locations can be defined relative to various locations.

– User defined results are now available.

– Upstream results are programmatically accessible, enabling direct access

through the API to custom results.

– Solve and Evaluate script output is now displayed within Design Assessment.

– Design Assessment results are now available at nodes, and nodes on elements.

Results can also be assigned units and can be presented in vector or tensor

forms. The units systems of upstream results can be obtained and mesh data

is now provided in the Design Assessment analysis units rather than geometry

units.

– Design Assessment can now access shell thickness information, including

varying thickness definitions.

– Design Assessment is now available for Linux platforms.

• Result Suppression. Result objects including result Probes can now be suppressed.

These suppressed result objects are excluded from the solution.

• Create Contour Result From Result. You can now create a contour result from

a Frequency Response result type in a Harmonic Analysis. This feature creates

a new result object in the tree with the same type, orientation, frequency, and

phase angle as the frequency result type.




• Expanded User Defined Result Types. Element attribute numbers such as ma-

terial or type used for the Mechanical APDL solution can now be accessed using

User Defined Result Types.

• Generate Path from Edge Result. You can now generate a Path form results

scoped to contiguous edges.

• Enhanced Chart. The Chart object has been enhanced to provide scaling (such

as semi-log) and plot options. Additionally, the charts can now plot harmonic

Frequency Response objects in order to easily compare and collate result data.

Ease of Use Enhancements

The following usage enhancements have been made in release 14.0:

• For Windows users, the solution file folder can be displayed using the Open

Solver Files Directory feature.

• Convenience MAPDL Parameter: The Mechanical input file to the MAPDL solver

now contains a parameter that points to the user_files directory in the Workbench

project structure. This can be used by those familiar with MAPDL commands to

perform useful file operations.

Notes on Equivalent Strains in Mechanical at Revision 14.0

There are two distinct techniques for calculating Equivalent Strain.

1. The calculation for Technique One proceeds as follows:

• Average the component (X, Y, Z, XY, YZ, XZ) strain values from the elements

at a common node;

• Calculate the equivalent strain from the averaged component strains.

2. The calculation for Technique Two proceeds as follows:

• Calculate the equivalent strain values (from the six component strains) on

a per element basis;

• Average these values from the elements at a common node.

The two techniques produce similar (but not necessarily identical) contours.

New at 14.0, when Mechanical post-processes MAPDL and AUTODYN result files,

the equivalent strain formulations are the same as those in MAPDL POST1. That

is, Mechanical will use Technique Two at 14.0.



Before 14.0, Mechanical used Technique One, except for Equivalent Total Strain

results(Solution->Strain->Equivalent Total). Equivalent Total Strain results were

always derived via Technique Two.

Effect Upon the Solution Worksheet (User Defined Result Expressions):

The user defined results EPELEQV, EPPLEQV, EPCREQV, EPTTEQV, and EPTOEQV,

which represent the pre-14.0 formulation, are no longer listed in the Worksheet

at 14.0.

The Worksheet (for structural analyses) will list (if they exist) EPELEQV_RST, EP-

PLEQV_RST, EPCREQV_RST, EPTTEQV_RST, and EPTOEQV_RST, which represent

Technique Two.

Exceptions

1. Technique Two has NOT been installed into the post-processing of result files

for other solvers (e.g. SAMCEF and SNECMA).

2. For cyclic symmetric models in modal environments, the older (pre-14.0) formu-

lation is still in effect.

3. If the MAPDL/AUTODYN result files were created by a revision previous to 14.0

(e.g., 13.0), then equivalent strain contours (and probes) will employ the older

(pre-14.0) formulation. Hence, if you resume a pre-14.0 database with pre-14.0

result files and insert an equivalent strain, then Technique One will be attempted.

4. If you resume a pre-14.0 database which already contains an equivalent strain

result/probe in the Solution tree, then the older (pre-14.0) formulation remains

in effect.

2.6. DesignXplorer Release Notes

Release 14.0 of the ANSYS DesignXplorer application contains all of the capabil-

ities from prior releases plus many new features and enhancements. Areas where

you will find improvements and new capabilities include:

2.6.1. DesignXplorer General Enhancements

2.6.2. DesignXplorer Manufacturable Values Enhancements

2.6.3. DesignXplorer Design Point Update Enhancements

2.6.4. DesignXplorer Remote Design Point Update Enhancements

2.6.5. Response Surface Enhancements

2.6.6. DesignXplorer Chart Enhancements



DesignXplorer Release Notes

2.6.1. DesignXplorer General Enhancements

Import Refinement and Verification Points

Via the Table view, refinement and verification points of a response surface can

now be added and edited to increase the ease of use and refinement capabilities.

Specifically, an external CSV file can be imported to create design points in a

custom design of experiments component, or refinement and verification points

in a Response Surface component.

Add and Remove Derived Output Parameters

Previous design point updates are no longer invalidated when a derived output

parameter is added or removed. When you add or remove a derived output

parameter and then update the first component of a DesignXplorer system, the

design points are not resubmitted for update; instead, the system evaluates the

derived output parameter for each design point and then rebuilds the rest of

the results.

Additional Optimization Options

The Goal Driven Optimization component now offers additional optimization

options. In the optimization Table of Schematic:

• A new Optimization Domain section allows you to define the parameter space

for each input parameter by setting the Lower Bound and Upper Bound. For

the NLPQL optimization method, you can also set an Initial Value to specify

where optimization starts for each input.

• The Optimization Study section has been renamed Optimization Objectives

and contains the following modifications:

– The Seek Midpoint option for continuous input parameters has been changed

to Seek Target. The default target is the midpoint.

– You can now set Constraint Handling preferences at the parameter level

for constrained parameters (i.e., parameters for which a constraint objective

is defined).

For more information on optimization options, see Defining the Optimization

Domain and Defining Optimization Objectives in the DesignXplorer help.



Duplication of DX System User Data

When you duplicate a design exploration system, the user data associated with

it (response points, charts, and metrics objects) are also duplicated. You can opt

to duplicate all user data or can select individual objects for duplication.

Dynamic Convergence Feedback

DesignXplorer now provides dynamic feedback during Parameter Correlation

component updates and Response Surface refinement via the Kriging meta-

model, allowing you to monitor the refinement process and convergence status.

During updates of Parameter Correlation components, generated points are

displayed in the Table view as soon as they are solved. During Response Surface

refinements via the Kriging meta-model, the Table view and the Kriging Conver-

gence Curves chart are dynamically updated as each refinement point is solved.

Also, the Kriging refinement controls have been modified to better support this

enhancement.

Generate DesignXplorer Project Reports

DesignXplorer now has project reporting functionality for Goal Driven Optimiza-

tion, Parameters Correlation, and Six Sigma Analysis systems, providing a project

“snapshot” that you can use to capture the design process. Each report contains

general sections for the Project Schematic, DOE, and Response Surface, a system-

specific section (GDO, Parameters Correlation, or SSA), and incorporates chart

graphics and table summaries.

For more detailed information on project reporting functionality, see Using Design

Exploration Project Reports in the DesignXplorer help and Project Reporting in

the Workbench User’s Guide.

New Options when Editing DesignXplorer Components

When you are editing a design exploration component, the tool bar and context

menu now include four new options: Update, Preview, Clear Generated Data,

and Refresh. These options display when relevant to the component state and

are performed only on the selected component.




New “Best Practices” Documentation

In this release, the documentation offers “best practice” recommendations on

the following topics:

• Working with failed design points.

In Failed Design Points, see subsections Preventing Design Point Update

Failures, Preserving Design Points and Files, and Handling Failed Design

Points.

• Selecting a meta-model to improve a response surface’s Goodness of Fit.

In Meta-Model Refinement, see subsections Working with Meta-Models and

Changing the Meta-Model. The Goodness of Fit section includes expanded

descriptions of Goodness of Fit criteria.

Improved Quick Help Messages

The Quick Help messages for DesignXplorer system cells provide detailed inform-

ation on cell states and now include links to relevant topics in the DesignXplorer

help or the Workbench User’s Guide.

2.6.2. DesignXplorer Manufacturable Values Enhancements

Manufacturable Values Filter

You can represent real-world manufacturing or production constraints by applying

a Manufacturable Values filter to continuous input parameters. The application

of this filter ensures that only values that realistically represent manufacturing

capabilities are included in the postprocessing analysis. This feature replaces the

Usability input parameter classification that was available previously.

Local Sensitivity Charts Support Manufacturable Values

The Local Sensitivity charts now support the use of continuous parameters with

Manufacturable Values.

On the Local Sensitivity Curves chart, you can view the placement of each Man-

ufacturable Value along the curve. For continuous parameters with Manufactur-

able Values:

• Continuous values are represented by a transparent gray curve.



• Manufacturable Values are represented by colored markers.

On the Local Sensitivity chart, each bar is defined by the Min-Max of the Manu-

facturable Values and the average calculated from the support curve; this chart

allows you to view the differences in the output Min-Max according to whether

Manufacturable Values are considered or discounted. For continuous parameters

with Manufacturable Values:

• Continuous values are represented by a gray bar.

• Manufacturable Values are represented by a colored bar in front of the gray

bar.

• If Manufacturable Values are used, both the colored bar and the gray bar

are visible on the chart.

• If the parameter range extends beyond the actual Manufacturable Values

defined, the bar is topped with a gray line to indicate the sensitivity obtained

when the Manufacturable Values are discounted.

Improved Response Chart Display of Manufacturable Values

The Response chart display has been improved to distinguish between continuous

parameters with Manufacturable Values and discrete parameters, allowing you

to gain a better understanding of your design. For continuous parameters with

Manufacturable Values, the bars or curves representing the continuous values

(depending on the type of Response chart) are now rendered in gray, with colored

bars or markers to represent each of the Manufacturable Values.

2.6.3. DesignXplorer Design Point Update Enhancements

Specify Design Point Update Order at DesignXplorer Level

You can now specify the order in which design points are updated at the

DesignXplorer level. When multiple design points share the same geometry or

mesh, you can improve the efficiency of the design point updates by specifying

an update order ithat groups identical geometry or mesh parameters and reduces

the number of geometry or mesh updates required. You can change the sequence

of design point updates by entering values manually, according to a column

sort, or by using the automatic sort feature. For more information, see Design

Point Update Order in the Workbench User’s Guide.




Design Point Log Files

As each point in a design point update is solved, DesignXplorer now writes its

full definition to a design point log file as a backup. The log file is written to the

user_files directory of the Workbench project and is in the “Extended CSV

File Format” used by ANSYS DesignXplorer to export table and chart data and

to import/export data from external CSV file. If the project ever fails or becomes

corrupted in some way, you can use this log file to import the design point data

back into the Table of Design Points in the Design of Experiments component

of any design exploration system.

For more information, see Design Point Log Files and Extended CSV File Format


Note

When updating design points via RSM, if you exit the project or switch

to another project during the update, the design point log file will

not be updated when you resume the update.

2.6.4. DesignXplorer Remote Design Point Update Enhance-

ments

Submit Design Point Updates to Remote Solve Manager

You can now submit design points from DesignXplorer to RSM for background

or remote processing. Also, it is now possible to specify different update methods

for solution cell and design point updates. The update method for solution cells

is determined by the settings in the Solution Process dialog, accessed via the

Tools > Options > Solution Process menu option. The update method for

design point updates is determined by the Design Point Update Process settings

in the Properties view for the Parameter Set bus bar.

For more detailed information, see Using Remote Solve Manager with

DesignXplorer in the DesignXplorer help.

Specify Job Submission Method for Design Point Updates via RSM

In the Parameter Set Properties view, use the new Default Job Submission

property to specify how design points sent to Remote Solve Manager for update

will be submitted. Submission options are as follows:



• One Job for All Design Points: All design points being sent for update are

submitted as a single job.

• One Job per Design Point: Each design point being sent for update is submitted

as a separate job.

• Specify Maximum Number of Jobs: Design points being sent for update are

distributed among and submitted in multiple jobs, up to the maximum number

of jobs specified.



Note

The failure of design points to update or merge back into the project

will not affect any design points that updated and merged success-

fully. If you encounter any failed design points, simply resubmit those

design points for updating. When submitting design points as separate

jobs using this release, you may encounter occasional failures with

the design point updates. These failures are most likely to occur if

submitting design points from a DesignXplorer design exploration

system and generally occur when ANSYS Workbench attempts to

merge the results back into the project.

Pending State for DX Remote Design Point Updates

The Pending state is available for design point updates submitted by

DesignXplorer to the Remote Solve Manager (RSM). With the Pending state,

you can continue interacting with the project on a limited basis or view interme-

diate results in the Table view while the update is in progress. Additionally, if

you exit the project and then reopen it, the Resume button allows you to resume

the update.

For more detailed information on the Pending state, see Using Remote Solve

Manager with DesignXplorer in the DesignXplorer help.

Differentiation of Failed Design Points

When you submit a design point update to Remote Solve Manager from

DesignXplorer, the Parameter Set Table of Design Points now displays icons to

differentiate between failed design points and out-of-date design points.




For more detailed information on how failed and out-of-date designs are dis-

played, see Design Point States in the Workbench User’s Guide.

2.6.5. Response Surface Enhancements

Enhanced Sparse Grid Refinement Capabilities

In this release, the Sparse Grid meta-model provides enhanced refinement

capabilities. When the Sparse Grid response surface is generated, it decomposes

the domain into subdomains with a linear basis function for each point of dis-

cretization; this allows for a more local refinement process that uses fewer design

points and reaches the requested accuracy faster.

For more information, see Sparse Grid in the Design Explorer help.

Define Maximum Number of Points for Sparse Grid Refinement

You can now specify the maximum number of refinement points that can be

generated as part of the Sparse Grid refinement process via the new Maximum

Number of Refinement Points response surface property. The Sparse Grid al-

gorithm will continue the refinement process until the response surface reaches

the requested level of accuracy, the maximum depth is reached, or the maximum

number of refinement points has been created.

2.6.6. DesignXplorer Chart Enhancements

Insert Refinement Point from Predicted vs. Observed Chart

On the Predicted vs. Observed chart, you can now right-click a point and add it

as a new refinement point that will be taken into account during the next gen-

eration of the Response Surface. To determine whether a particular point on the

chart is a candidate for being inserted as a refinement point, you can position

your mouse cursor over the point; the corresponding values for parameters, in-

cluding the predicted and observed values for output parameters, display in the

Properties view.

New “Local Sensitivity Curves” Chart

A new Local Sensitivity Curves chart allows you further focus your analysis by

viewing independent parameter variations within the standard Local Sensitivity

chart. This multi-curve chart displays individual local sensitivities, with a separate



curve to represent the impact of each input parameter on one or two output

parameters.

For more information, see Using the Local Sensitivity Curves Chart in the

DesignXplorer help.

New “2D Slices” Response Chart

The new 2D Slices Response chart combines the advantages of both the 2D and

3D graph Response charts, compressing the data of a three-dimensional surface

into an easy-to-read, two-dimensional chart. Essentially, this chart is a projection

of the 3D response surface onto the XY plane, with the X-axis input varying

continuously while the Y-axis input determines the number of curves or “slices”

to be displayed.

For more information, see Using the 2D Slices Response Chart in the

DesignXplorer help.

Chart Context Menu Options to Enable/Disable Parameters

In this release, you can enable or disable DesignXplorer chart parameters quickly

and easily via new context menu options. When you right-click a chart entity,

the context menu now contains options that allow you to enable/disable the

selected parameter, all inputs except the selected parameter (for inputs), or all

outputs except the selected parameter (for outputs). If at least one parameter is

already disabled, you can right-click anywhere in the chart and opt to reverse

all enabled/disabled parameters (an operation that disables all enabled paramet-

ers, and vice versa).

This functionality is currently available for the Predicted vs. Observed chart, the

Sensitivities chart, the Local Sensitivity chart, the Local Sensitivity Curves chart,

the Correlation Matrix chart, and the Determination Matrix chart.

For more information, see Using DesignXplorer Charts in the DesignXplorer help.

2.7. Remote Solve Manager Release Notes

The following enhancements have been made to the Remote Solve Manager

(RSM) in release 14.0.



Remote Solve Manager Release Notes

RSM Batch Queue Support for FLUENT, CFX, and ANSYS

Mechanical APDL

Remote Solve Manager now provides Batch Queue support for FLUENT, CFX, and

ANSYS Mechanical APDL. For solutions that will be submitted to RSM, the solver

Properties view now allows you to specify remote execution options. Except

where otherwise noted, these solvers now support the following modes of exe-

cution on remote queues:

• Serial

• Shared memory parallel

• Distributed parallel on Linux clusters via PBS and LSF, and on Windows clusters

via Windows HPC and LSF

CFX also has extended support for CFX external files (e.g., BC profiles, .csv vari-

ables, etc.). See Using Remote Solve Manager with ANSYS CFX in the CFX docu-

mentation for a complete list of which files are and are not supported.

Limitation: In release 14.0, RSM does not support Windows clusters via LSF for

the submission of FLUENT solutions.

Local Scratch Directory for RSM Batch Queue Jobs

When you submit Batch Queue jobs via Remote Solve Manager, you can now

specify that you want to store solver files in local directory on the Compute

Server machine (i.e., in a local “scratch” directory on the execution node), rather

than in the shared cluster directory that serves as the central RSM file-staging

directory. By using a local directory on the execution node, you could optimize

performance by reducing the need to copy files. The location in which solver

files are stored is controlled by the File Management property of the Compute

Server Properties dialog.

Limitation: Note that this option is not available if you are sending CFX jobs to

a Microsoft HPC Compute Server; in this case, the shared cluster directory is always

used.

Option to Retain Temporary Job Files

You now have the option to retain temporary RSM job files created in the

Working Directory on the Compute Server. In the release, the General tab of

the redesigned Compute Server Properties dialog includes a new Delete Job



Files in Working Directory property that allows you to specify whether the

temporary job files will be saved or deleted upon completion of the associated

job. You can save these temporary job files and use them for troubleshooting

purposes.

Enhanced RSM Service Scripts for Linux

Modifications to the RSM installation and initialization scripts for Linux allow you

to install RSM services and configure them as daemons (i.e., to start up automat-

ically when the machine is booted). Once the RSM daemon services are installed,

they can be configured so that non-root users can run, stop, and restart them.

For more information, see Starting RSM Services Automatically at Boot Time for

Linux in the Remote Solve Manager documentation.

Specify Job Submission Method for Design Point Updates via

RSM

In the Parameter Set Properties view, use the new Default Job Submission

property to specify how design points sent to Remote Solve Manager for update

will be submitted. Submission options are as follows:

• One Job for All Design Points: All design points being sent for update are

submitted as a single job.

• One Job per Design Point: Each design point being sent for update is submitted

as a separate job.

• Specify Maximum Number of Jobs: Design points being sent for update are

distributed among and submitted in multiple jobs, up to the maximum number

of jobs specified.





Remote Solve Manager Release Notes

Note

The failure of design points to update or merge back into the project

will not affect any design points that updated and merged success-

fully. If you encounter any failed design points, simply resubmit those

design points for updating. When submitting design points as separate

jobs using this release, you may encounter occasional failures with

the design point updates. These failures are most likely to occur if

submitting design points from a DesignXplorer design exploration

system and generally occur when ANSYS Workbench attempts to

merge the results back into the project.

Submit Design Point Updates to RSM from DesignXplorer

You can now submit Design Point updates to RSM from DesignXplorer (DX). The

Pending state is also now supported for DX, which means if you submit a design

point update to RSM from DX, you can continue interacting with the project on

a limited basis and can view intermediate results of individual design point up-

dates via the Table of Design Points while the remote update is in progress.

Additionally, if you exit the project, when you reopen it the Resume button allows

you to resume the update.

For additional information, see Using Remote Solve Manager with DesignXplorer


Submit Geometry-Only Updates for All Design Points to RSM

In this release, the new Pre-RSM Foreground Update property in the Parameter

Set Properties view allows you to update the geometry locally before submitting

design points to RSM. This feature enables remote update of design points in

situations where remote machines do not have access to CAD software, or suffi-

cient licenses for CAD, CAD connections, or geometry components. It also allows

you to interrupt an update earlier in the process if failures are found during

geometry update. Output files for the geometry update for all design points are

then retained and reused for the remainder of the design point updates.

This functionality is available for RSM remote server machines on which both

Workbench and necessary CAD software have been installed.



For more detailed information on geometry-only design point updates, see

Solution Process or Updating Design Points via Remote Solve Manager (RSM)

in the Workbench User’s Guide .

Redesigned Compute Server Properties Interface

The Compute Server Properties dialog has a new, more intuitive design, allowing

you to configure and administrate RSM more easily. The Compute Server

Properties dialog now offers a three-tab design (with General, Cluster, and SSH

tabs), context-sensitive help, a clearer presentation of options, and properties

that have been modified to enhance clarity and ease of use.

For more information, see Adding a Compute Server in the Remote Solve Manager

help.

Revised Remote Solve Manager Installation and Configuration

Instructions

There have been significant revisions to the Installation and Configuration section

and the Appendices of the Remote Solve Manager help. The instructions have

been updated, consolidated where possible, and reorganized for clarity and ease

of use.

Fluent in Workbench with RSM Submission

UDFs are now supported for Solution Update via RSM, with the following limita-

tions:

• Automatic compilation of UDFs (when submitting to a host with different oper-

ating system or architecture) requires that the UDF directory be in the same

location as the case data within the project directory structure.

• Automatic compilation of UDFs also requires that a suitable compiler be installed

on the remote system, and that the remote system environment be configured

so that the compiler can be located. See the compiler documentation.

Submission of Fluent via RSM to a LSF batch queue is supported on Linux only.

2.8. Engineering Data Workspace Release Notes

The following new material models are now available in Engineering Data.



Engineering Data Workspace Release Notes

• Viscoelastic- These material models are available for Static Structural and Transient

Structural analysis.

– Prony Shear Relaxation

– Prony Volumetric Relaxation

– Williams-Landel-Ferry Shift Function

– Tool-Narayanaswamy Shift Function

– Tool-Narayanaswamy with Fictive Temperature Shift Function

• Material Strength Limits- These material models are available for Static Structural,

Transient Structural, Modal, Linear Buckling, Random Vibration and Response

Spectrum analysis.

– Orthotropic Stress Limits

– Orthotropic Strain Limits

– Tsai-Wu Constants

– Puck Constants

– LaRc03/04 Constants

Gasket material model is now also available for

• Pre-stress modal analysis

• Pre-stress modal based Random Vibration analysis

• Pre-stress modal based Random Response Spectrum analysis

Hyper-elastic material models are now also available for

• Pre-stress modal analysis

• Pre-stress Linear Buckling analysis

• Pre-stress modal based Random Vibration analysis

• Pre-stress modal based Random Response Spectrum analysis

In the thermal materials library, the default value for Thermal Conductivity

changed from 0.26 W/m-sec to 0.026 W/m-sec for the air material.

2.9. EKM Release Notes

ANSYS Engineering Knowledge Manger (EKM) 14.0 consists of EKM, the EKM

server product, and EKM Desktop, its companion desktop client application. New



features that are available in ANSYS EKM 14.0 are listed below in EKM (p. 57)

and EKM Desktop (p. 59).

2.9.1. EKM

If you have used previous versions of EKM, version 14.0 offers many significant

changes and improvements that are listed below:

• Product Installation and Setup: An EKM server can now be installed and

set up on a local machine for a single user, or on shared hardware for mul-

tiple users using the ANSYS 14.0 installation media.

• EKM Individual Server: This setup type allows an EKM server to be set up

for an individual user on their own machine. In this single-user mode, a user

can access their “private” repository on their individual server, as well as

have access to the full capabilities of EKM.

• EKM Shared Server: This setup type allows an EKM server to be set up on

a shared device that can be accessed by multiple users in a collaborative

mode. Multiple users can access a shared repository in their LAN (Local Area

Network) or across a WAN (Wide Area Network). A shared basic EKM server

can be quickly and easily set up with minimal effort in your LAN for a

workgroup of typically up to 10 users. A shared advanced EKM server can

be set up in a non-cluster or cluster configuration in a WAN for a large

workgroup of any number of users. A shared advanced EKM server can be

configured in a variety of topologies that best meet your organization’s

needs. In addition to accessing shared repositories, users accessing a shared

server also have access to the full capabilities of EKM.

• Integration with ANSYS Workbench: When you install ANSYS Workbench,

the EKM Desktop client is automatically installed on your hardware. You can

save your current Workbench project directly to a selected repository, and

search for a Workbench project and open it from a selected repository. After

updating the local copy of your Workbench project, you can then send

changes to the copy of the project that resides in the EKM repository. Other

users who have updated the same Workbench project can get your changes

in order to access the most-up-to-date version. Tighter integration with

Workbench facilitates collaboration with ongoing projects and allows multiple

users to leverage on the work that is being done by their colleagues.

• ANSYS Workbench Project Representation in EKM: When a Workbench

project is saved to an EKM repository from Workbench or EKM Desktop, the

project is automatically saved as a Workbench Project Archive File type

(with .wbpz extension), making it easier to manage and act on the project



EKM Release Notes

as a single object in EKM. Project-level metadata are extracted and an ex-

tensive Workbench Project Report is auto-generated that summarizes com-

ponent systems and all aspects of the Workbench project. The data can be

used to display, identify, search, and reuse Workbench projects

• Migration from EKM Individual to Shared Repository: You can use the

export and import features of EKM when you want to migrate data from

one repository to another. You can either migrate a complete workspace or

just a subset. For example, you can use this to migrate all of the data and

configuration contained in an individual server to a new workspace in a

shared server.

• EKM Desktop Enhancements: The “local” repository feature has been re-

placed by the EKM individual server. File transfers have been made more

robust. Advanced search and reporting features have also been improved

for this release. See EKM Desktop (p. 59) for additional changes.

• Record and Replay of Journals: You can now create journal script files by

recording your interactive actions in the EKM web client. This can be helpful

when you want to automate tasks that are repetitious in nature, especially

system administration tasks. Recorded journals can be replayed easily from

the user interface.

• Audit Trail: A feature available in the Process Player that can be used to

track the decisions and actions that are made during a workflow process

for work items that have been completed. This helps in fulfilling audit needs

for regulatory compliance.

• Licensing Enhancements: In EKM 14.0, the licensing framework has been

simplified. Now, you will only need an EKM individual user license key or an

EKM shared user license key to access EKM, based on the type of server you

are accessing.

• Usability Enhancements: Numerous other usability enhancements have

been made to EKM. These include:

– Search results can be displayed in a Tree view, and search snippets for

the results can also be displayed

– Default metadata and report extraction methods can be extended by

the use of additional user-defined extractors

– A user-defined cleanup policy for deleted items in the Recycle Bin can

be specified

– The ability to execute a scriptable action as a scheduled task has been

added



– A “private” search query for any user can be added to the built-in Sys-tems/Public Shared Queries folder so that it can be accessed

by all users

– A “Quick Compare” report option now allows you to compare multiple

files using default settings with a single click; improvements to custom-

ized comparison report formats have also been made

2.9.2. EKM Desktop

If you have used previous versions of EKM Desktop, version 14.0 provides many

significant changes and improvements that are summarized below:

• Wizards and Dialogs: New wizards and enhancements to existing wizards

and dialogs have been made. These include:

– Setup wizard

– Advanced search wizard

– Comparison Report wizard

– New Connection wizard

– Upgrade wizard

– Server Diagnostics Tool dialog

• Actions: New actions and enhancements to existing actions have been

made. These include:

– Upload a Workbench project as a Workbench Project Archive File (.wbpzformat)

– Create new branches and revert to previous versions of version-controlled

objects in EKM repositories from within EKM Desktop

– Synchronize remote items

– Edit shortcut

• Displays: New displays and enhancements to existing displays have been

made. These include:

– Display HTML report in object view

– Display properties as per display order in the following dialogs:

→ Edit Properties

→ Upload



EKM Release Notes

→ New Folder

→ New Catalog

– Display My Data folder in navigation tree

2.10. System Coupling

System Coupling is a new component system that allows you to perform fluid-

structure (FSI) analyses using the FLUENT and Mechanical systems in Workbench.

In this release, one- and two-way transfers between running solvers, also referred

to as co-simulation, is supported.

System Coupling has the following main features:

• A progressive workflow that standardizes and simplifies the setup and coordinated

execution, interruption, restart and post-processing of coupled analyses

• A workflow designed to minimize the effect on the setup and execution of the

participating solvers (e.g. solver specific physics and capabilities like parallel

processing are unaffected by System Coupling)

• Comprehensive control over the coupled analysis, including transient and

steady/static couplings, and multiple coupling iterations per coupling step

• Comprehensive control over data transfers, including any number of force and

displacement transfers on surface regions, and data transfer specific under-relax-

ation and convergence targets

• Complete support for the execution of coupled analyses outside and independent

of the Workbench environment

2.11. IC Engine

IC Engine is a new analysis system for release 14.0. It is a customized tool for

setting up and solving the flow inside an IC Engine with moving geometry. It is

used for the quantification of flow rate, swirl and tumble, and other flow para-

meters during the engine cycle. The IC Engine system uses the ANSYS FLUENT

solver for fluid flow analysis.

2.11.1. Advantages of the IC Engine System

Modeling in-cylinder simulations has been a complex and time consuming task,

because specific decomposition methods are required for modeling the motion

of the valves and piston. Manual decomposition and meshing can take from 6



hours to a couple of days. Furthermore, getting all the required inputs to accur-

ately model the physics in the in-cylinder simulation is tedious and difficult.

The IC Engine reduces the time for setting up the in-cylinder simulation from a

few hours to a few minutes by automating the decomposition of the geometry

and the mesh generation. The dynamic mesh setup and solver setup are also

done automatically. The IC Engine system requires minimum inputs to complete

the simulation. This significantly reduces the effort required to setup the IC Engine

case and eliminates the need for a long, tedious, and error prone manual prepar-

ation of the geometry, mesh, and solver set up.

2.11.2. IC Engine System Features

• IC Engine System Properties

– Engine Inputs: A centralized engine specific data management is imple-

mented for all the engine parameters like connecting rod length, crank

radius, valve and piston-motion profile, engine speed, and also piston

offset.

– All the engine inputs are parametrized.

– Solver Setup: During the geometry preparation, the IC Engine system

automatically writes down all the required inputs for dynamic mesh

setup and also provides a default set of boundary conditions.

– Journal Customization: The IC Engine system provides a mechanism to

control simulation using journal hooks during different phases of simu-

lation.

• Geometry

– A dedicated feature is included in the Design Modeler to capture the IC

Engine geometry inputs.

– You can animate the valve motion, piston motion, and the spray cone

during the entire cycle of simulation at the geometry level.

– You can have automatic geometry decomposition, depending on the

engine type for the IC Engine simulation.

– You can perform geometry decomposition at different crank angles.

– Geometry data required for the IC Engine Setup is automatically gener-

ated.

• Mesh



IC Engine

A dedicated user interface is provided to control the mesh parameters

for generating the IC Engine specific mesh.

–

– The system uses the named selection created in the decomposition to

identify different zones and automatically assigns appropriate mesh al-

gorithms and required mesh controls.

– Mesh quality is improved by creating automatic virtual topology and

pinch controls.

• Solver

– The system automatically validates the different mesh zones required

for the given type of engine.

– The system automatically creates grid interfaces.

– The system automatically sets up the various dynamic mesh controls,

zones, and events.

– The system automatically sets up the models, boundary conditions, de-

fault monitors and user defined settings, depending on the simulation

type.

– You can customize the simulation using the journal hooks.

• Postprocessing

– The system automatically generates an IC Engine specific report.

– It creates animations of the mesh and velocity contours as the solution

progresses.

– You can enhance the default report with the custom images generated

in CFD-Post.

– The system creates the charts for swirl and tumble.

– The system automatically creates the contour images at different crank

angles.



Chapter 3: Mechanical APDL

Release 14.0 of the Mechanical APDL application contains all of the capabilities

from prior releases plus many new features and enhancements. Areas where you

will find changes and new capabilities include the following:

• Structural (p. 63)

• Coupled-Field (p. 76)

• Acoustics (p. 77)

• Radiation Analysis (p. 79)

• Solvers (p. 79)

• Linear Perturbation Analysis (p. 82)

• Commands (p. 83)

• Elements (p. 89)

• Other Enhancements (p. 91)

Also see Known Incompatibilities (p. 96) and The ANSYS Customer Portal (p. 3)

for important information about this release.

For information about changes to the ANSYS Workbench Products, see the ANSYS

Workbench Products Release Notes.

3.1. Structural

Release 14.0 includes the following new features and enhancements for structural

analyses:

3.1.1. Contact

3.1.2. Elements and Nonlinear Technology

3.1.3. Linear Dynamics

3.1.4. Materials and Fracture



3.1.1. Contact

Release 14.0 includes the following enhancements for structural analyses involving

contact:

3.1.1.1. Contact Stabilization Damping

3.1.1.2. Squeal Damping

3.1.1.3. Surface-Projection-Based Contact for 2-D Models

3.1.1.4. Surface-Projection-Based Contact with MPC Contact

3.1.1.5. Geometry Correction for 2-D Contact and Target Surfaces

3.1.1.6. Bonding Temperature

3.1.1.7. Other Contact Enhancements

3.1.1.1. Contact Stabilization Damping

Rigid body motion often occurs in the beginning of an analysis because the initial

contact condition is not well established. For example, you may encounter

problems such as small gaps between element meshes on both sides of the

contact pair or between the integration points of the contact elements and target

elements. The new contact-stabilization damping feature provides a means to

avoid these problems.

For standard contact or rough contact, you can use real constants FDMN and

FDMT to define contact damping scaling factors along contact normal and tan-

gential directions. KEYOPT(15) of the contact elements offers further controls on

the effect of stabilization damping.

The new contact-stabilization technique damps relative motions between the

contact and target surfaces for open contact. It provides a certain amount of

resistance to reduce the risk of rigid body motion. For more information, see

Applying Contact Stabilization Damping in the Contact Technology Guide.

3.1.1.2. Squeal Damping

A brake squeal analysis involves sliding contact at frictional sliding interfaces. In

a complex eigenvalue extraction analysis using the QR damped (QRDAMP) or

damped (DAMP) mode extraction method, the effects of squeal damping contrib-

ute to the damping matrix.

Squeal damping is identified in two parts: destabilizing and stabilizing damping.

Two new real constants on the contact elements, FDMD and FDMS, allow you

to control how squeal damping is applied. You can use these real constants to

apply a scaling factor to the internally calculated destabilizing and stabilizing



damping or to input the destabilizing and stabilizing squeal damping coefficients

directly. KEYOPT(16) of the contact elements allows further control of how FDMD

and FDMS are interpreted during the analysis.

For more information, see Forced Frictional Sliding Using Velocity Input in the

Contact Technology Guide.

3.1.1.3. Surface-Projection-Based Contact for 2-D Models

Surface-projection-based contact, previously available for 3-D surface-to-surface

contact only, has been extended to the 2-D contact elements CONTA171 and

CONTA172.

Surface-projection-based contact enforces contact constraints on an overlapping

region of contact and target surfaces rather than on individual contact nodes or

Gauss points, significantly improving the accuracy of contact results and

providing smoother stress distributions in underlying elements for the case of

dissimilar meshes at the contact interface. The surface-projection-based contact

method is implemented by setting KEYOPT(4) = 3 on the contact element.

For more information, see Using the Surface Projection Based Contact Method

(KEYOPT(4) = 3) in the Contact Technology Guide.

3.1.1.4. Surface-Projection-Based Contact with MPC Contact

Surface-projection-based contact (KEYOPT(4) = 3) has been extended to support

the multipoint constraint (MPC) approach (KEYOPT(2) = 2) for all surface-to-surface

contact elements (CONTA171, CONTA172, CONTA173, and CONTA174).

In general, the new method provides significantly more accurate and smoother

stress distributions near the contact interface of dissimilar meshes compared to

the other existing contact options (KEYOPT(4) = 1 and 2), especially for higher-

order elements involved in contact.

The surface-projection-based method usually increases computational costs;

therefore, it is best used for contact regions where the accuracy of local stresses

is critical.

For more information, see Modeling Solid-Solid and Shell-Shell Assemblies in the

Contact Technology Guide.



Structural

3.1.1.5. Geometry Correction for 2-D Contact and Target Surfaces

The geometry-correction feature, previously available for 3-D surface-to-surface

contact only, has been extended to the 2-D contact elements TARGE169, CON-

TA171, and CONTA172. Applying a geometry correction to circular (or nearly

circular) contact surfaces (via the SECTYPE and SECDATA section commands)

reduces the discretization error associated with linear contact elements and can

greatly improve the accuracy of contact stresses for certain types of curved 2-D

contact/target surfaces.

For more information, see Geometry Correction for Contact and Target Surfaces

in the Contact Technology Guide.

3.1.1.6. Bonding Temperature

In most welding processes, after materials around contacting surfaces exceed a

critical temperature, the surfaces begin to melt and bond with each other. The

new TBND real constant on the contact elements (CONTA171 to CONTA177) allows

you to specify this critical temperature in order to model such behavior. When

the temperature at the contact surface exceeds the specified melting temperature,

the contact changes to “bonded” and remains bonded for the remainder of the

analysis.

For more information, see Using TBND in the Contact Technology Guide.

3.1.1.7. Other Contact Enhancements

The following additional contact enhancements are available:

• The surface-projection-based contact method (KEYOPT(4) = 3) now supports

the HHT time-integration method for transient dynamic analyses.

• Both accuracy and performance have been improved for transient dynamic

analyses that include contact and use the HHT time-integration method.

3.1.2. Elements and Nonlinear Technology

Release 14.0 includes the following enhancements to elements and nonlinear

technology:

3.1.2.1. Rezoning

3.1.2.2. Ocean Loading

3.1.2.3. Beam Elements with Shape Memory Alloy and Hyperelasticity (Solid Pipe Section)

3.1.2.4. Coupled Aeroelastic-Structural Analysis



3.1.2.5. Discrete-Thickness Shells with 2-D Array

3.1.2.6. Enhanced Body Force Loading for Pipe and Elbow Elements

3.1.2.7. Soil-Pile-Structure Analysis

3.1.2.1. Rezoning

Rezoning for 3-D analyses now supports tabular loading. For more information

about loads and boundary conditions, see Rezoning Requirements in the Advanced

Analysis Techniques Guide.

Nearly all structural materials are now supported. (The exceptions are CAST (cast

iron), CONCR (concrete), MPLANE (microplane), SMA (shape memory alloy), and

SWELL (swelling)). Material models can be combined, as described in Material

Model Combinations in the Material Reference.

The new MAPVAR command defines tensors and vectors in user-defined state

variables for rezoning.

3.1.2.2. Ocean Loading

The following enhancements have been added to support analyses involving

ocean loading:

3.1.2.2.1. Ocean Wave Loading in a Harmonic Analysis

3.1.2.2.2. Diffracted Wave Support

3.1.2.2.1. Ocean Wave Loading in a Harmonic Analysis

A harmonic analysis can now include all relevant ocean wave loading effects. A

specialized variation of the harmonic analysis is available, applicable to regular

waves (Airy and Wheeler single-component waves, as well as Stokes and Deans

Stream Function waves). The new harmonic analysis capability is accessed via

the HROCEAN command.

The frequency is obtained automatically, directly from the specified ocean inform-

ation (OCDATA and OCTABLE). As with a standard harmonic analysis, a damping

matrix must be added separately if desired. Ocean loads are calculated with the

assumption that the structure is stationary.

For more information, see the HROCEAN command documentation and Harmonic

Ocean Wave Procedure (HOWP) in the Mechanical APDL Theory Reference.



Structural

3.1.2.2.2. Diffracted Wave Support

In addition to wave-theory-derived ocean loading (implemented via KWAVE = 0

through 7 on the OCDATA command), it is now possible to import ocean data

that has been defined externally (for example, via the Hydrodynamic Diffraction

System (AQWA)).

The new capability is activated by setting KWAVE = 8 on the OCDATA command.

The externally defined ocean data is read into the program via the OCREAD

command.

For more information, see Applying Ocean Loading from a Hydrodynamic Ana-

lysis in the Advanced Analysis Techniques Guide, the documentation for the

OCREAD command, and Diffracted Wave on Line and Surface Elements (Kw = 8)

in the Mechanical APDL Theory Reference.

3.1.2.3. Beam Elements with Shape Memory Alloy and Hyperelasticity

(Solid Pipe Section)

A new solid circular cross section for pipes is now available. Using PIPE288 and

PIPE289 elements and the solid pipe section, you can easily simulate beam

structures with special materials, such as rubber and shape memory alloy, which

must be represented with 3-D constitutive models and are not available for

standard beam elements.

3.1.2.4. Coupled Aeroelastic-Structural Analysis

A new aeroelastic-structural analysis capability allows you to design the structures

upon which wind turbines are positioned. In the sequential aeroelastic coupling

method, the aeroelastic analysis is performed by the aeroelastic code with the

effects of the supporting structure incorporated as a superelement to the solution.

The program provides the supporting structure-substructure matrices and loading

data that are required as input to the aeroelastic code (via the OUTAERO macro).

Following the aeroelastic analysis, the results can be read back in to recover the

element forces inside the supporting structure.

For more information, see Coupling to External Aeroelastic Analysis of Wind

Turbines in the Advanced Analysis Techniques Guide.



3.1.2.5. Discrete-Thickness Shells with 2-D Array

Support has been added for discrete-thickness shells. When specifying shell

section thickness as a tabular function (SECFUNCTION), the prior NODE option

(still available in this release) uses a 1-D array where the thicknesses are associated

to the nodes via array index; this pattern works well but requires large array di-

mensions when gaps in node numbering exist.

The new NOD2 option allows you to vary shell thicknesses versus node number

in the form of a 2-D array, relating thickness to node number directly. The size

of the array is proportional (2X) to the number of nodes with thicknesses and is

independent of node numbering. This capability is particularly useful for tapered

shells, where a single part may have large node IDs, but a relatively small number

of nodes relative to the entire model.

3.1.2.6. Enhanced Body Force Loading for Pipe and Elbow Elements

You can now define element body force loads for pipe and elbow elements, al-

lowing you to specify radial and axial temperature variations on those elements.

You can also specify a table name for beam and pipe elements that allow multiple

temperature inputs per node; you need only define the tabular load for the first

node (Node I), as loads on the remaining nodes are applied automatically. For

more information, see the documentation for the BFE command.

3.1.2.7. Soil-Pile-Structure Analysis

It is now possible to analysis the interaction of a structure supported on one or

more piles with an elastic or inelastic soil. You can input data to describe the

lateral force-displacement, and the end-bearing and skin-friction responses of

the soil layers occurring at the pile location. It is not necessary for all piles in the

analysis to be situated in identical geological strata. For more information, see

Soil-Pile-Structure Analysis in the Advanced Analysis Techniques Guide, and the

documentation for the PILExxxx family of commands.

3.1.3. Linear Dynamics

Release 14.0 includes the following enhancements in the area of linear dynamics:

3.1.3.1. Damping

3.1.3.2. Linear Non-Prestressed Modal Analysis

3.1.3.3. Mode Superposition (MSUP) Enhancements

3.1.3.4.Thermal Loads in Modal and Prestressed Harmonic Analyses

3.1.3.5. Rotordynamics



Structural

3.1.3.6. Spectrum Analysis

3.1.3.7. Spectrum Combination

3.1.3.8. Other Linear Dynamics Enhancements

3.1.3.1. Damping

Material-dependent damping proportional to the mass is now available in full

harmonic and transient analyses (Lab = ALPD on the MP command). In these

analyses, the damping proportional to the stiffness is now specified via Lab =

BETD on the MP command (replacing the obsolete DAMP label). For mode-su-

perposition methods, the material-dependent damping ratio is now input via

Lab = DMPR on the MP command (replacing the obsolete DAMP label). For

more information, see Damping in the Structural Analysis Guide.

3.1.3.2. Linear Non-Prestressed Modal Analysis

The procedure for a linear non-prestressed modal analysis for a brake squeal

system has been simplified and streamlined so that it follows the conventional

linear modal procedure in conjunction with the CMROTATE command. The

solution accuracy of the QRDAMP eigensolver for brake squeal analysis has been

greatly improved. In addition, the new squeal damping feature also works with

the linear non-prestressed modal analysis. For more information, see Linear Non-

prestressed Modal Analysis in the Structural Analysis Guide.

3.1.3.3. Mode Superposition (MSUP) Enhancements

For multiple load steps applied to mode-superposition harmonic and transient

analysis, surface elements (SURF153, SURF154, and SURF156), FOLLW201, and

remote-load (RBE3) contact elements can now be specified within multiple load

steps.

Eigenvalues and mode shapes from a linear perturbation modal analysis can be

used in downstream analyses of mode-superposition harmonic and transient

analysis, as well as in power spectral density (PSD) and response-spectrum ana-

lyses. The prestressed effects from the linear perturbation modal analyses are

retained and passed into the downstream analyses.

In mode-superposition harmonic analyses that use the modal stresses in the ex-

pansion pass of the modal analysis (MXPAND,,,,YES,,YES), the nodal and reaction

forces now contain the damping and inertial components.



3.1.3.4.Thermal Loads in Modal and Prestressed Harmonic Analyses

If a thermal load is defined in a modal or harmonic analysis (including the static

part of a prestressed harmonic analysis), you can now use the new THEXPAND

command to ignore its contribution to the modal and harmonic loads.

3.1.3.5. Rotordynamics

You can now import variable bearing characteristics used for bearing element

COMBI214 real constants into table parameters from an ASCII file via the import-bearing1 macro. The file format is described in Bearing Characteristics File

Format in the Rotordynamic Analysis Guide.

The critspeedmap macro is now available to generate the critical speed map

of a rotor. For a usage example, see Example: Critical Speed Map Generation in

the Rotordynamic Analysis Guide.

The bearing element COMBI214 now supports stiffness and damping character-

istics dependent upon the eccentricity. The table parameters definition is given

in Using the COMBI214 Element in the Rotordynamic Analysis Guide.

3.1.3.6. Spectrum Analysis

The damping proportional to the mass (ALPHAD) is now supported in spectrum

and power spectral density (PSD) analyses.

Enhancements to the RESP command allow you to generate the response

spectrum from an acceleration input, and to determine the pseudo-velocity and

pseudo-acceleration response spectrum.

In PSD and multi-point response spectrum (MPRS) analyses, the maximum

number of input tables is now 200, while the maximum number of participation

factor calculations (PFACT command) is 300.

3.1.3.7. Spectrum Combination

An option is now available on the mode-combination commands (CQC, DSUM,

GRP, NRLSUM, PSDCOM, ROSE, SRSS) to combine the summed modal static

and inertial forces. The default (and prior release behavior) is to combine the

modal static forces (that is, only the stiffness multiplied by mode shape forces,

both of which are the stress-causing forces). An option is now available to com-



Structural

bine the summed modal static forces and inertia forces (both stiffness and mass

forces, which are the forces acting on the supports).

3.1.3.8. Other Linear Dynamics Enhancements

Load case combinations (LCOPER) now add the element nodal forces in the

FORCE,TOTAL case before the combination yielding correct total (static, plus

damping, plus inertial) forces. Also, SET,,,,,AMPL and SET,,,,PHASE yield the correct

force amplitudes and phase angles when FORCE,TOTAL is set.

The modal assurance criterion values obtained via the RSTMAC command can

be retrieved as APDL parameters for further processing. See the *GET command.

3.1.4. Materials and Fracture

Release 14.0 includes the following enhancements to materials and fracture

technology:

3.1.4.1.VCCT-Based Crack Growth Simulation

3.1.4.2. Chaboche Material Curve Fitting

3.1.4.3. Shape Memory Alloy

3.1.4.4. Microplane Material Model for Concrete Modeling

3.1.4.5. Enhanced Initial State Capability

3.1.4.6.Viscoelastic Response of Materials with Anisotropic Hyperelasticity

3.1.4.7. Harmonic Viscoelasticity

3.1.4.8. Coupled Pore Fluid Diffusion Analysis

3.1.4.9. Interface Delamination Modeling with Interface Elements

3.1.4.10. Swelling

3.1.4.11. Anisotropic Hyperelasticity

3.1.4.12. Progressive Damage of Fiber-Reinforced Composites

Some material properties are not available via the material property menus of

the GUI. For a list of such material properties, see GUI-Inaccessible Material

Properties.

3.1.4.1. VCCT-Based Crack Growth Simulation

This release includes a new approach to crack growth simulation. The method

is based on the virtual crack closure technique (VCCT) with interface elements

to model the crack growth. The method is very suitable for interfacial delamina-

tion of laminate composites, and is also applicable to crack growth simulation

in homogeneous material. A number of fracture criteria are available, including

critical energy-release rate, linear, bilinear, B-K, modified B-K (Reeder), power law,



and user-defined. A material data table can be used to define the fracture criterion

and associated material properties.

Support for the new crack growth simulation technology is available via the

PLANE182 and SOLID185 elements. The new CGROW command defines all ne-

cessary parameters for the crack growth simulation.

For more information, see VCCT-Based Crack Growth Simulation in the Structural

Analysis Guide.

3.1.4.2. Chaboche Material Curve Fitting

Material curve fitting allows you to derive coefficients from experimental data

that you provide for your material. Curve fitting involves comparing your exper-

imental data to certain preexisting nonlinear material models to determine the

best material model to use during solution.

A new material curve-fitting option determines your material constants by relating

your experimental data to the Chaboche nonlinear kinematic hardening model.

Curve fitting is performed either interactively or via batch commands. You can

fit uniaxial plastic strain vs. stress data, along with discrete temperature depend-

encies for multiple data sets.

For more information, see Chaboche Material Curve Fitting in the Material Refer-

ence.

3.1.4.3. Shape Memory Alloy

The shape memory alloy (SMA) can undergo large deformation without showing

residual strains (pseudoelasticity effect, also often called superelasticity), and can

then recover its original shape through thermal cycles (the shape memory effect).

As such, the SMA material models (TB,SMA) can now be used to model both the

superelastic behavior and the shape memory effect behavior of shape memory

alloys.

For more information, see Shape Memory Alloy (SMA) Material Model in the

Material Reference.

3.1.4.4. Microplane Material Model for Concrete Modeling

The new microplane material (TB,MPLANE) models material behavior through

uniaxial stress-strain laws on various planes. Directional-dependent stiffness de-



Structural

gradation is modeled through uniaxial damage laws on individual potential failure

planes, leading to a macroscopic anisotropic damage formulation.

The model is well suited for simulating engineering materials consisting of various

aggregate compositions with differing properties (for example, concrete modeling,

in which rock and sand are embedded in a weak matrix of cements).

For more information, see Microplane Material Model in the Material Reference.

3.1.4.5. Enhanced Initial State Capability

The initial state capability allows you to define a nontrivial state from which to

start an analysis. The initial state capability has been enhanced to include initial

creep strain, user-defined state variables, and a node-based option.

Initial state application has always been element-based, but a new node-based

option is available for current-technology elements. For layered elements, you

can apply an initial state to each layer at every node within the element. For

beam elements, you can apply an initial state to each cell number at every node

within the element. For all other elements, the initial state is applied at each

node within the element.

For more information, see Initial State in the Basic Analysis Guide and the docu-

mentation for the INISTATE command.

3.1.4.6. Viscoelastic Response of Materials with Anisotropic Hyper-

elasticity

You can now model the response of materials with viscoelasticity and anisotropic

hyperelasticity behavior (combining TB,PRONY and TB,AHYPER).

The viscoelasticity is assumed to be isotropic (that is, independent from the

loading direction), and is defined via the Prony series (TB,PRONY) and shift

function (TB,SHIFT) to model the strain rate effect. The new capability supports

most current-technology elements (the exceptions being beam and link elements).

For more information, see Material Model Combinations in the Material Reference,

AHYPER and PRONY (Anisotropic Hyperelasticity and Viscoelasticity (Implicit))

Example in the Structural Analysis Guide, and Large Strain Visco-Anisotropic Hy-

perelasticity in the Mechanical APDL Theory Reference.



3.1.4.7. Harmonic Viscoelasticity

A new viscoelastic constitutive model for the harmonic domain (using the gen-

eralized Maxwell model) is now available for modeling the steady-state response

of viscoelastic materials in small-deformation models. For more information, see

Harmonic Viscoelasticity in the Material Reference and Viscoelasticity in the

Structural Analysis Guide.

3.1.4.8. Coupled Pore Fluid Diffusion Analysis

Coupled pore fluid diffusion and structural analysis now supports hyperelastic

materials, allowing for an initial, efficient analysis of porous materials with hyper-

elasticity models. In this case, the program assumes that all Biot and permeability

parameters remain constant during deformation.

The coupled pore-pressure thermal elements used in analyses involving porous

media are listed in Coupled Pore-Pressure Element Support in the Coupled-Field

Analysis Guide. For more information, see Porous Media Flow in the Mechanical

APDL Theory Reference.

3.1.4.9. Interface Delamination Modeling with Interface Elements

In addition to the existing exponential option, a new bilinear option

(TB,CZM,,,,BILI) is available for modeling interface delamination using interface

elements (INTER202 through INTER205) with a cohesive zone material (CZM)

model. The new CZM model option uses bilinear traction-separation laws.

Unlike an exponential model, a bilinear model gives correct results for linearly

debonding material interfaces, and makes it possible to simulate Mode I or Mode

II dominated (or mixed-mode) debonding.

For more information, see Interface Delamination and Failure Simulation in the

Structural Analysis Guide, Cohesive Zone Material in the Material Reference, and

Cohesive Zone Material (CZM) Model in the Mechanical APDL Theory Reference.

3.1.4.10. Swelling

Swelling is a material enlargement (volume expansion) caused by neutron

bombardment or other effects (such as moisture). The swelling strain rate is

generally nonlinear and is a function of factors such as temperature, time, neutron

flux level, stress, and moisture content. Several options are now available for



Structural

modeling swelling effects (TB,SWELL), and element support has been greatly

expanded. For more information, see Swelling Model in the Material Reference.

3.1.4.11. Anisotropic Hyperelasticity

For the anisotropic hyperelasticity material model (TB,AHYPER), a new exponen-

tial-based strain energy potential function is available for characterizing the iso-

choric part of strain energy potential. For more information, see Anisotropic

Hyperelastic Material in the Material Reference and Anisotropic Hyperelasticity in

the Mechanical APDL Theory Reference.

3.1.4.12. Progressive Damage of Fiber-Reinforced Composites

The damage initiation and propagation in fiber-reinforced composites can now

be simulated with a nonlinear solution process. Different than the postprocessing

failure analysis, the new capability allows you to estimate ultimate composite

strength under complex stress states.

The material damage initiation and evolution laws are specified via two new

material models (TB, DMGI and TB,DMGE, respectively). Currently, only failure-

criteria-based initiation laws and instant-stiffness-reduction evolution laws are

supported (TB, FCLI).

The new damage models are compatible with linear elastic orthotropic materials,

which are commonly used for representing the homogenized properties of fiber-

reinforced composites.

For more information, see Damage Initiation Criteria and Damage Evolution Law

in the Material Reference.

3.2. Coupled-Field

Release 14.0 includes the following enhancement in the area of coupled-field

analysis:

3.2.1. Structural-Thermal Analysis

Coupled-field elements PLANE223, SOLID226, and SOLID227 now support plasti-

city, viscoelasticity, viscoplasticity and creep in structural-thermal analyses. A

thermoplastic effect can now be included in structural-thermal and structural-

thermoelectric analyses. The amount of plastic work converted to heat is con-

trolled by the Taylor-Quinney coefficient (via the MP,QRATE command). For more



information about structural-thermal analyses using these elements, see Struc-

tural-Thermal Analysis in the Coupled-Field Analysis Guide.

The ETCONTROL command can now be used with PLANE223, SOLID226, and

SOLID227 to control the element technology in structural-thermal and structural-

thermoelectric analyses.

3.2.2. Coupled-Diffusion Analysis

You can now use current-technology coupled-field elements PLANE223, SOLID226,

and SOLID227 to perform structural-diffusion (KEYOPT(1) = 100001), thermal-

diffusion (KEYOPT(1) = 100010), and structural-thermal-diffusion (KEYOPT(1) =

100011) analyses. Example uses for these analyses include modeling temperature-

dependent moisture migration and hygrothermal strains in electronic packages

or sodium migration in aluminum reduction cells.

To support the new diffusion field, a new concentration degree of freedom

(CONC) has been introduced along with the diffusion flow rate “force” (RATE).

The diffusivity coefficients are input via new MP command labels DXX, DYY, and

DZZ. Saturated concentration is input via the MP,CSAT command. The new

concentration gradient (CG) and diffusion flux (DF) result items are now available

for diffusion-field postprocessing.

In structural-diffusion and structural-thermal-diffusion analyses, the displacement

and concentration degrees of freedom are coupled by the diffusion expansion

coefficients input via the new MP command labels BETX, BETY, and BETZ. The

reference concentration for the diffusion strain calculation is input via the

MP,CREF command. The calculated diffusion strain is available for postprocessing

using the output via the EPDI label.

For more information, see PLANE223, SOLID226, and SOLID227 in the Element

Reference. Also see Structural-Diffusion Analysis, Thermal-Diffusion Analysis, and

Structural-Thermal-Diffusion Analysis in the Coupled-Field Analysis Guide.

3.3. Acoustics

A number of enhancements to acoustic analysis are available in this release. You

can now:

• Simulate temperature-dependent nonuniform ideal gas medium via the BF, TREF,

TOFFST, MP, MPTEMP and MPDATA commands.

• Simulate the propagation of sound in viscous medium via the MP command.



Acoustics

• Apply the various analytic sources (in an acoustic radiation or scattering analysis)

to the inside or outside of the model via the AWAVE command. Analytic sources

include plane wave, monopole/pulsating sphere, dipole, bare loudspeaker, and

back-enclosed loudspeaker sources.

• Apply the various mass sources to the model via the BF, BFK, BFL, BFA and BFV

commands. Mass sources include point, line, surface, and volume sources.

• Apply the surface normal velocity to the exterior surface of the model via the

SF and SFA commands.

• Apply the impedance boundary to the acoustic-structural interface via the SF

and SFA commands.

• Apply the impedance sheet load to the inside of the model via the BF and BFA

commands.

• Apply the Robin boundary condition to the exterior surface of model for radiation

or scattering analysis via the SF and SFA commands.

• Select the symmetric algorithm for FSI modal analysis via KEYOPT(2) = 2, or for

full harmonic FSI analysis via using KEYOPT(2) = 3, when using fluid elements

FLUID30, FLUID220 and FLUID221.

• Select the total-field method for acoustic scattering analysis with analytic wave

sources and PML or Robin boundary condition.

• Select the pure scattered-field method for either acoustic scattering or radiation

analysis with analytic wave sources and PML or Robin boundary condition via

the HFSCAT command.

• Define a sloshing surface via the SF and SFA commands.

• Plot and print near- and far-field pressure, sound pressure level, directivity, sound

power level, far-field scattered pressure, and target strength values via the PL-

NEAR, PLFAR, PRNEAR, and PRFAR commands.

• Plot and print the nodal sound pressure level (SPL) and contour pattern via the

PLNSOL, PRNSOL, NSOL, PLVAR and PRVAR commands.

• Plot and print nodal velocity for modal and harmonic analyses via the PLNSOL,

PRNSOL, PLESOL, PRESOL and PLVECT commands.

The following additional enhancements for acoustic analysis are available:

• The pressure L2-norm squares are stored in the element summable miscellaneous

table for fluid elements FLUID30, FLUID220 and FLUID221.



• The FSI surface between the acoustic elements and solid structural elements can

be automatically identified if the SF command is not issued.

• The equivalent source surface for near- and far-field can be automatically identi-

fied if the SF command is not issued.

3.4. Radiation Analysis

The following enhancements to radiation analysis are available in this release:

3.4.1. Energy Balance

3.4.2.View Factor Calculations

3.4.3. Radiosity Solver Parallelization

3.4.1. Energy Balance

You can now ensure a good energy balance by adjusting the view factor matrix.

The VFSM command can adjust the view factor matrix to satisfy reciprocity

and/or row sum properties. You may also see small changes in the temperature

solution for a radiosity model compared to results from previous releases. These

differences are due to a more accurate area calculation for the radiation facets

and will yield a more accurate energy balance.

3.4.2. View Factor Calculations

For 3-D analyses, two options are now available for calculating view factors when

running Distributed ANSYS:

• If you issue the SOLVE command, view factors are calculated in parallel

mode if no view factors were previously calculated.

• If you issue a VFOPT,NEW command, view factors are calculated in serial

mode.

3.4.3. Radiosity Solver Parallelization

A new Jacobi iterative solver option has been implemented for radiosity analyses.

The Jacobi solver is applicable when using Distributed ANSYS. For more inform-

ation, see the documentation for the RADOPT command.

3.5. Solvers

Release 14.0 includes the following new enhancements that improve solution

procedures and features.



Solvers

3.5.1. Distributed ANSYS Enhancements

3.5.2. GPU Acceleration Enhancements

3.5.3. Subspace Eigensolver for Eigenvalue Buckling Analysis

3.5.4. Overconstraint Detection

3.5.5. Other Solver Changes and Enhancements

3.5.1. Distributed ANSYS Enhancements

The following enhancements are available for Distributed ANSYS:

• Support for GPU acceleration has been added. See GPU Acceleration Enhance-

ments for more details.

• You can now avoid combining the local or distributed results files into a single,

global results file upon completion of the solution. The file-combination control

is also available for other solution files. See the DMPOPTION and RESCOMBINE

commands for more information.

• Support for the new subspace iteration (SUBSP) eigensolver (for eigenvalue

buckling analyses only) is available. See the BUCOPT command for more inform-

ation.

• Support for TRANS126, INFIN110, INFIN111, PLANE121, and PLANE230 element

types has been added.

• Support is available for the EFLG option on the NLDIAG command.

• Analyses involving contact elements are much more robust when restarting the

analysis (that is, when performing a multiframe restart).

• New error-handling logic has been added to avoid deadlocks (hung jobs) if any

unexpected error occurs during the parallel job execution. If such an error occurs,

diagnostic information is now printed into one of the output files written by

each Distributed ANSYS process.

• Radiosity surface elements SURF251 and SURF252 are now supported.

3.5.2. GPU Acceleration Enhancements

The following enhancements are available for the GPU Accelerator capability.

• Support for Distributed ANSYS.

Support includes both multicore servers and clusters (that is, single-machine

and multiple-machine hardware). In this release, only one GPU per machine

or computing node is supported. For example, when using Distributed ANSYS



on a cluster involving eight computing nodes with each computing node

having two GPUs, only a single GPU per node (a total of eight GPUs) can

be used to accelerate the simulation.

• Support for the NVIDIA Quadro 6000 card.

• Support for modal analyses using the unsymmetric or damped eigensolver

(MODOPT,UNSYM or MODOPT,DAMP).

• Improved performance relative to the previous release.

When using the sparse solver, the solver kernel running on the GPU hardware

is up to 25 percent faster than the prior release. When using the PCG/JCG

solvers, the solver kernel that is run on the GPU hardware is up to 40 percent

faster than the prior release.

3.5.3. Subspace Eigensolver for Eigenvalue Buckling Analysis

A new subspace eigensolver (BUCOPT,SUBSP) is available for eigenvalue buckling

analyses. The eigensolver uses essentially the same algorithm as the unsymmetric

eigensolver (MODOPT,UNSYM) to solve the generalized eigenvalue problem.

The subspace eigensolver is most appropriate for linear perturbation eigenvalue

buckling analyses in which the tangent stiffness matrix becomes indefinite. In

such cases, the subspace eigensolver is more likely to achieve a successful solution

compared to the Block Lanczos eigensolver.

3.5.4. Overconstraint Detection

Overconstraint detection is now available and includes the topological method

and the algebraic method. In the algebraic method, the constraint equations

introduced by the CE and CP commands, and by P (pressure) variables from the

element u-P formulation, are taken into account.

3.5.5. Other Solver Changes and Enhancements

The following are solver-related changes and enhancements.

• The performance of the sparse solvers (both shared memory and distributed

memory; EQSLV,SPARSE) has been enhanced when running on "AVX SIMD"

capable Intel and AMD processors (for example, Intel Xeon processors code-

named "Sandy Bridge"). In some cases, the solver performance can be up to 50

percent faster than the previous release when running on this specific hardware.



Solvers

• The performance of the multiframe restart procedure has been greatly improved,

particularly when many boundary condition specifications exist (D, F, CE, etc.)

or when many load steps are involved. In some cases, the performance of the

restart action is now five times faster than the previous release.

• The performance of the shared memory sparse solver (EQSLV,SPARSE) has been

enhanced. In some cases, the solver performance can be up to 40 percent faster

than the previous release, regardless of the processor hardware used.

• The PCG solver now supports the Lagrange multiplier method of the MPC184

family of elements. The imposed Lagrange multipliers are transferred into multiple

point constraints so that the PCG solver can be used to obtain a solution. To

activate this functionality, the LM_Key field on the PCGOPT command must be

set to ON.

3.6. Linear Perturbation Analysis

The following enhancements for linear perturbation analyses have been added:

3.6.1. Support for More Analysis Types

3.6.2. Linear Behavior Based on a Prior Preloaded Status

3.6.3. Linear Perturbation Tangent Option

For more information, see Linear Perturbation Analysis in the Structural Analysis

Guide and the theoretical discussion of linear perturbation in the Mechanical

APDL Theory Reference.

3.6.1. Support for More Analysis Types

Linear perturbation support is now available for buckling analysis, full harmonic

analysis, and for subsequent mode-superposition, PSD, or other type of modal-

based linear dynamic analysis.

3.6.2. Linear Behavior Based on a Prior Preloaded Status

In many engineering applications, the linear behavior of a structure based on a

prior linear or nonlinear preloaded status is of interest. In addition to prior support

of linear perturbation modal analysis, you can now use the linear perturbation

analysis procedure to solve a linear problem from this preloaded case for eigen-

value buckling analyses and full harmonic analyses. The preloaded case can in-

clude any nonlinear materials and geometric and contact nonlinearities. The

linear perturbation full harmonic analysis also supports cyclic symmetric and VT

full harmonic options.



To perform a linear perturbation buckling or full harmonic analysis after a static

or full transient analysis, restart the analysis at the load point of interest, apply

your perturbation load, and then use the PERTURB and SOLVE commands to

execute the linear perturbation analysis.

3.6.3. Linear Perturbation Tangent Option

A new option for linear perturbation uses the tangent (material Jacobian) on the

material constitutive curve as the material property. The material property remains

linear in linear perturbation and is obtained at the point of the base analysis

where restart occurs. The option is primarily for nonlinear materials other than

hyperelastic materials. For more information, see the documentation for the

PERTURB command and Specifying Material Behavior in Linear Perturbation in

the Element Reference.

3.7. Commands

This section describes changes to commands at Release 14.0.

Some commands are not accessible from menus. The documentation for each

command indicates whether or not a menu path is available for that command

operation. For a list of commands not available from within the GUI, see Menu-

Inaccessible Commands in the Command Reference.

3.7.1. New Commands

3.7.2. Modified Commands

3.7.3. Undocumented Commands

3.7.4. Archived Commands

3.7.1. New Commands

The following new commands are available in this release:

• AWAVE -- Specifies input data for an acoustic incident wave.

• DMPOPTION -- Specifies distributed memory parallel (Distributed ANSYS) options.

• CGROW -- Defines crack-growth information.

• *DOT -- Calculates the dot (or inner) product of two vectors (APDL Math).

• *FFT -- Computes the fast Fourier transformation of a specified matrix or vector

(APDL Math).

• HROCEAN -- Initiates the harmonic ocean wave procedure (HOWP) to include

all relevant ocean wave effects in a harmonic analysis (ANTYPE,HARMIC).



Commands

• *INIT -- Initializes a vector or dense matrix (APDL Math).

• OCREAD -- Imports ocean data that has been defined externally (for example,

via the Hydrodynamic Diffraction System (AQWA)).

• OVCHECK -- Checks for overconstraint among constraint equations and Lagrange

multipliers.

• MAPVAR -- Defines tensors and vectors in user-defined state variables for

rezoning.

• PILECALC -- Initiates soil-pile calculations.

• PILEDISPSET -- Sets up pile cap displacement data for soil-pile analysis.

• PILEGEN -- Generates data for elements used in soil-pile analysis.

• PILELOAD -- Applies pile cap loads to the specified node.

• PILEMASS -- Gets pile cap mass and applies it to the specified element.

• PILERUN -- Runs a soil-pile analysis.

• PILESEL -- Selects all pile elements.

• PILESTIF -- Gets pile cap stiffness and applies it to the specified element.

• RESCOMBINE -- Reads results from local results files into the database after a

distributed memory parallel (Distributed ANSYS) solution.

• THEXPAND -- Enables or disables thermal loading.

• WTBCREATE -- Creates a USER300 element to model the turbine for wind

coupling analysis and specifies relevant settings for the analysis.

3.7.2. Modified Commands

The following commands have been enhanced or otherwise modified in this re-

lease:

• BFE -- Defines an element body force load. Support is now available for pipe

and elbow elements. You can also specify a table name for beam and pipe ele-

ments that allow multiple temperature inputs per node.

• BUCOPT -- Specifies buckling analysis options. The Subspace iteration eigensolver

has been added to the list of available eigensolvers. Also, the default behavior

has been changed to find the lowest magnitude negative and positive modes

centered around 0.0. Previously, the lowest magnitude positive modes were

found by default.



• CINT -- Defines parameters associated with fracture parameter calculations. The

new VCCT option (for CINT,TYPE) calculates energy-release rate parameters using

the VCCT method

• /CONFIG -- Assigns values to ANSYS configuration parameters. The default value

for the maximum number of results sets allowed on the results file (the NRES

parameter) has increased from 1000 to 10000. Similarly, the default for the

NUMRESLT keyword in the config140.ans file has changed to 10000.

• /COPY -- Copies a file. In distributed parallel mode (Distributed ANSYS), you can

now specify that the copy operation be performed on all distributed processes.

• CQC -- Specifies the complete quadratic mode combination method. The new

ForceType option allows you to specify the forces being combined.

• CYCOPT -- Specifies solution options for a cyclic symmetry analysis. A new option

for HINDEX allows control of the tolerance used in determining if a Fourier con-

tribution to the load is significant in static and harmonic analyses with non-cyclic

loadings.

• /DELETE -- Deletes a file. In distributed parallel mode (Distributed ANSYS), you

can now specify that the delete operation be performed on all distributed pro-

cesses.

• *DIM -- Defines an array parameter and its dimensions. An array-parameter size

is no longer restricted to be 231

bytes. Also, for Type = STRING, the maximum

IMAX value has been reduced to 248 (from 256).

• DJ -- Specifies boundary conditions on the components of relative motion of a

joint element. This command now allows the predefined %_FIX% table name for

input of the boundary condition value, meaning that the program will prescribe

(lock) the degree of freedom to the current displacement value.

• *DMAT -- Creates a dense matrix (APDL Math). The new Method = RESIZE option

allows you to resize an existing matrix. The new Method = LINK option allows

you to link to an existing matrix, thus providing a means to manipulate a sub-

matrix of the original matrix.

• DSUM -- Specifies the double sum mode combination method. The new Force-Type option allows you to specify the forces being combined.

• EQSLV -- Specifies the type of equation solver. The AMG solver has been undoc-

umented; it is recommended that you use the PCG solver instead.

• ETCONTROL -- Controlsthe element technologies used in element formulation

(for applicable elements). You can now use the command with elements

PLANE223, SOLID226, and SOLID227 to control the element technology in

structural-thermal and structural-thermoelectric analyses.



Commands

• *EXPORT -- Exports a matrix to a file (APDL Math). You can now export a matrix

in the DMIG file format.

• FS -- Stores fatigue stress components at a node. Now allows the input of time.

• *GET -- Retrieves a value and stores it as a scalar parameter or part of an array

parameter. Capabilities have been extended after a Campbell analysis (Entity =

CAMP). You can now retrieve the stability (real part of the eigenvalue) for each

mode and rotational velocity step as well as the instability key. Also, modal as-

surance criterion values can now be retrieved as parameters using Entity =

RSTMAC.

• GRP -- Specifies the grouping mode combination method. The new ForceTypeoption allows you to specify the forces being combined.

• MP -- Defines a linear material property as a constant or a function of temperat-

ure.

You can now define a mass matrix multiplier for damping proportional to

the mass with Lab = ALPD. The stiffness matrix multiplier is now defined

with Lab = BETD. These options replace the Lab = DAMP option.

This command and the MPxxxxxx family of commands have been enhanced

to provide additional support for coupled-field analyses.

• MODCONT -- Specifies additional modal analysis options. The functionality of

the IgnoreThermalStrain key has been replaced by the THEXPAND com-

mand.

• *NRM -- Computes the norm of the specified matrix or vector (APDL Math). The

new Normalize argument allows you to normalize a vector created by the

*VEC command.

• NRLSUM -- Specifies the Naval Research Laboratory (NRL) sum mode combination

method. The new ForceType option allows you to specify the forces being

combined.

• PCGOPT -- Controls PCG solver options. The new LM_Key option allows use of

the PCG solver when MPC184 Lagrange multiplier method elements are present

in the model.

• PERTURB -- Sets linear perturbation analysis options. Support for linear perturb-

ation eigenvalue buckling and full harmonic analyses has been added. In addition,

the new MatKey = TANGENT is an alternate material option which specifies that

material properties in the perturbation analysis be accounted for by using the

tangent (material Jacobian) on the material constitutive curve at the restart point

of the base analysis.



• PLCAMP -- Plots Campbell diagram data for applications involving rotating

structure dynamics. Support is now available for the plotting of all frequencies

(positive and negative) obtained with the DAMP eigensolver. This new option

(keyNegFreq) may be needed when damping is important and overdamped

frequencies are present.

• PRCAMP -- Prints Campbell diagram data for applications involving rotating

structure dynamics. Support is now available for the printing of all frequencies

(positive and negative) obtained with the DAMP eigensolver. This new option

(keyNegFreq) may be needed when damping is important and overdamped

frequencies are present.

• PSDCOM -- Specifies the power spectral density mode combination method.

The new ForceType option allows you to specify the forces being combined.

• /RENAME -- Renames a file. In distributed parallel mode (Distributed ANSYS),

you can now specify that the rename operation be performed on all distributed

processes.

• RESCONTROL -- Controls file writing for multiframe restarts. The new MAXFILES= -1 option allows restart files (Jobname. Xnnn) to continue to be written after

the maximum limit of 999 files is reached; the .Xnnn file numbering is reset to

1, and existing Jobname. Xnnn files are overwritten. (This is the new default

behavior.)

• RESP -- Generates a response spectrum. You can now specify an acceleration

input time-history (inputType = 1).

• RESWRITE -- Appends results data from the database to a results file. This com-

mand can now be used (in conjunction with the RESCOMBINE command) to

write a global results file for a distributed parallel (Distributed ANSYS) solution.

• ROSE -- Specifies the Rosenblueth mode combination method. The new Force-Type option allows you to specify the forces being combined.

• SECDATA -- Describes the geometry of a section. This command now supports

the definition of circular contact sections associated with 2-D contact/target

elements.

• SECFUNCTION -- Specifies shell section thickness as a tabular function. The

command now accepts (via KCN) either a local coordinate system reference

number or an array interpretation pattern for the tabular function evaluation.

When KCN = NOD2, the program interprets TABLE as a 2-D array parameter

(where columns contain node numbers and rows contain the corresponding

thicknesses) that expresses the function to be mapped.



Commands

• SECTYPE -- Associates section type information with a section ID number. The

command now has support for circular contact sections associated with 2-D

contact/target elements.

• *STATUS -- Lists the current parameters and abbreviations. The new Par = MATH

option allows you to list APDL Math parameters.

• SRSS -- Specifies the square root of sum of squares mode combination method.

The new ForceType option allows you to specify the forces being combined.

• TB -- Activates a data table for material properties or special element input. The

new CGCR option specifies the fracture criterion for crack growth simulation

(CGROW).

• TBFT -- Performs material curve-fitting operations. The command now supports

curve-fitting based on the Chaboche kinematic hardening plasticity model.

• *VEC -- Creates a vector (APDL Math). The new Method = RESIZE option allows

you to resize an existing vector.

• VFOPT -- Specifies options for view factor file. For 3-D analyses using Distributed

ANSYS, you can now issue a VFOPT,NEW command to specify a serial mode

calculation of the view factors.

3.7.3. Undocumented Commands

The following features have been undocumented at this release:

• The Trefftz method for electrostatic analyses

• Optimization

• Topological optimization

The following legacy commands have therefore been undocumented:

TOPLOTOPRFAOPADD/OPT

TOPRINTOPRGROPCLROPEQN

TOSTATOPRSWOPDELOPFACT

TZAMESHPLVAROPTOPMAKEOPFRST

TZDELEPRVAROPTOPSELOPGRAD

TZEGENTOCOMPOPANLOPKEEP

XVAROPTTODEFOPDATAOPLOOP

TOFREQOPRESUOPPRNT

TOTYPEOPSAVEOPRAND

TOVAROPEXEOPSUBP



TOEXEOPLFAOPSWEEP

TOLOOPOPLGROPTYPE

TOGRAPHOPLISTOPUSER

TOLISTOPLSWOPVAR

For optimization, use ANSYS DesignXplorer.

For information about commands that have been undocumented in prior releases,

see the archived release notes on the ANSYS Customer Portal.

3.7.4. Archived Commands

The following legacy commands have been moved to the Feature Archive:

• SSTIF

• PSOLVE

Use NLGEOM in place of SSTIF and linear perturbation instead of PSOLVE.

3.8. Elements

This section describes changes to elements at Release 14.0.

Some elements are not available from within the GUI. For a list of those elements,

see GUI-Inaccessible Elements in the Element Reference.

3.8.1. Modified Elements

3.8.2. Undocumented Elements

3.8.1. Modified Elements

The following elements have been enhanced in this release:

• TARGE169 and TARGE170 -- These target segment elements now have an option

to define the symmetry condition of a constrained surface. This option applies

when a force distributed constraint uses a single pilot node for the target element.

The new KEYOPT(6) allows you to define the symmetry condition with respect

to the nodal coordinate system of the pilot node.

• TARGE169, CONTA171, and CONTA172 -- These 2-D surface-to-surface target and

contact elements now support a geometry correction feature that can be applied

to circular contact and target surfaces to reduce discretization errors associated

with linear elements.



Elements

http://www.ansys.com/customerportal

• CONTA171 and CONTA172 -- These 2-D surface-to-surface contact elements now

support the surface-projection-based method specified by setting KEYOPT(4) =

3 for the contact detection option.

• CONTA173, CONTA174, CONTA175 -- These 3-D contact elements now include

squeal damping for use in brake squeal analyses via the new real constants FDMB

and FDMS and the new KEYOPT(16).

• CONTA171, CONTA172, CONTA173, and CONTA174 -- For these 2-D and 3-D

surface-to-surface contact elements, the surface projection method of contact

detection (KEYOPT(4) = 3) can now be used in conjunction with the MPC contact

option (KEYOPT(2) = 2).

• CONTA171, CONTA172, CONTA173, CONTA174, CONTA175, CONTA176, and

CONTA177 -- These 2-D and 3-D contact elements now offer the following new

or enhanced features:

– Contact stabilization damping is now available via the new real constants

FDMN and FDMT and the new KEYOPT(15). As a result of this new method,

the use of real constant FKOP to input a damping coefficient for standard or

rough contact is undocumented.

– A critical temperature for bonding can be input via the new real constant

TBND.

– For the birth and death option, contact elements are no longer restricted to

following the birth and death status of the underlying elements.

• INTER202 and INTER205 -- These linear interface elements can now simulate in-

terfacial delamination of laminate composites and VCCT-based general crack

growth. The new KEYOPT(2) allows you to select whether the element is to be

used with a cohesive zone material or for crack growth simulation using VCCT.

• PLANE223, SOLID226, and SOLID227 -- These coupled-field solid elements have

a new option (KEYOPT10) to control the diagonalization of the element damping

matrix in coupled-field analyses with thermal and diffusion degrees of freedom.

• HSFLD241 and HSFLD242 -- These hydrostatic fluid elements can now be used

in a linear perturbation analysis.

3.8.2. Undocumented Elements

The following legacy element has been undocumented at this release:



Recommendations

Suggested Cur-

rent-Techno-

logy Element

Undocumented

Legacy Element

Set KEYOPT(1) = 1001.PLANE223TRANS109

--SOLID236SOLID117

For information about other elements that have been undocumented in prior

releases, see the archived release notes on the ANSYS Customer Portal.

3.9. Other Enhancements

This section contains information about Release 14.0 enhancements not listed

elsewhere in this document.

3.9.1. Documentation

ANSYS, Inc. continues to refine the Mechanical APDL documentation set. To that

end, the following changes and enhancements to the documentation have oc-

curred with this release:

3.9.1.1. Technology Demonstration Guide

The following new example problems have been added to the Technology

Demonstration Guide:

3.9.1.1.1. Hydrostatic Fluid Analysis of an Inflating and Rolling Tire

3.9.1.1.2. Cardiovascular Stent Simulation

3.9.1.1.3. Nonlinear Analysis of a Rubber Boot Seal

3.9.1.1.4. Rocket Nozzle Extension Simulation: Operation

3.9.1.1.5. Hot-Rolling Structural Steel Analysis with 3-D Rezoning

3.9.1.1.6. Friction Stir Welding (FSW) Simulation

3.9.1.1.7. Acoustic Analysis of a Small Speaker System

3.9.1.1.1. Hydrostatic Fluid Analysis of an Inflating and Rolling Tire

This example problem demonstrates how to model a fluid that is fully enclosed

by a solid (the container). The problem shows how loading on the container and

container deformation affect the pressure, volume, density and mass of the

contained fluid. Highlights include modeling hydrostatic fluid elements with

negative and positive volumes, use of a gas material model, and reinforcing.



Other Enhancements


3.9.1.1.2. Cardiovascular Stent Simulation

This example problem demonstrates how to simulate stent-artery interaction

during and after stent placement in an occluded artery. The analysis uses ad-

vanced modeling techniques including contact, element birth and death, mixed

u-P formulation, and nonlinear stabilization.

3.9.1.1.3. Nonlinear Analysis of a Rubber Boot Seal

This example problem demonstrates the capabilities and advantages of the sur-

face-projection-based contact method in a highly nonlinear problem. This ana-

lysis of a rubber boot seal model includes geometric, material, and changing

status nonlinearities (contact). Highlighted analysis capabilities include 3-D sur-

face-to-surface contact element technology, surface-projection-based contact,

and the use of Neo-Hookean hyperelastic material.

3.9.1.1.4. Rocket Nozzle Extension Simulation: Operation

This example problem is the second of two problems that simulate a rocket

nozzle. The new problem demonstrates how to simulate the thermal stresses

induced during the operation of the nozzle. (The existing problem demonstrates

how to simulate the thermal stresses during the manufacturing stage of a rocket

nozzle.)

It is assumed that the rocket has been launched and that hot gases are flowing

through the nozzle, subjecting the inside and outside of the nozzle body to

convection heat loading. The heat loading leads to a significant thermal gradient

through the thickness of the body that manifests as high thermal stresses. Solid

thermal and structural elements accurately simulate the multiphysics of the

problem. While a fully coupled element could solve the problem, a loose coupling

method is used instead. Because the body material could be homogenous or a

layered composite, the simulation requires a solid element type with both homo-

geneous and layered material capabilities.

3.9.1.1.5. Hot-Rolling Structural Steel Analysis with 3-D Rezoning

Hot-rolling is a metal-forming process occurring above the recrystallization

temperature of the material. Many types of hot-rolling processes exist, including

structural shape rolling, where a component is passed through rollers to achieve

the desired shape and cross section. Structural steel is the most common hot-

rolled material.



In this example problem, the hot-rolling process to form the I-beam is simulated

statically using rezoning to repair a severely distorted mesh in a 3-D large-de-

formation analysis. The analysis also uses contact technology and symmetric

expansion.

3.9.1.1.6. Friction Stir Welding (FSW) Simulation

This example problem demonstrates how to simulate the friction stir welding

(FSW) process. Several typical characteristics of FSW are presented, including

plastic deformation, tool-workpiece surface interaction, and heat generation due

to friction and plastic deformation. Thermal and mechanical behaviors are mutu-

ally dependent and coupled together during the process. A nonlinear direct

coupled-field analysis is performed. Highlighted analysis capabilities include

direct structural-thermal analysis using solid coupled-field elements, frictional

heat generation using contact elements, plastic heat generation in coupled-field

elements, and use of surface-projection-based contact.

3.9.1.1.7. Acoustic Analysis of a Small Speaker System

This example problem demonstrates the use of acoustic elements coupled with

structural elements to analyze the performance of a speaker assembly. Highlights

include structural-acoustic coupling using fluid-structure interaction (FSI) in 3-D,

a symmetric FSI algorithm, perfectly matched layers (PML) to absorb outgoing

acoustic waves, sound pressure level (SPL) and velocity postprocessing, far-field

postprocessing of acoustic field, and user-defined symmetric expansion options.

3.9.1.2. Feature Archive

Additional legacy features, commands, elements, and theory information have

been moved to the Feature Archive. While ANSYS, Inc. continues to support these

legacy capabilities for the immediate future, some may be undocumented in

future releases. You are urged to consider moving to their recommended replace-

ments.

3.9.1.3. Material Reference

Release 14.0 offers the new Material Reference. The reference provides a single,

convenient resource for information about the available material models, linear

and nonlinear material properties, material data tables, material model combin-

ations, explicit dynamics materials, element support for material models, and

other important information. Expect to see ongoing improvements in subsequent

releases.



Other Enhancements

3.9.1.4. Element Reference

Release 14.0 offers an improved Element Reference. The reference provides a

single, convenient resource for information about element classifications, types,

and features. Expect to see ongoing improvements in subsequent releases. To

get started immediately, see Selecting Elements for Your Analysis.

3.9.1.5. Parallel Processing Guide

All topics related to parallel processing have been moved into the new Parallel

Processing Guide. The guide includes the following primary topics: shared memory

parallel, distributed memory parallel (Distributed ANSYS), and GPU acceleration.

All of these topics had been previously located in various other guides.

3.9.1.6. Documentation Updates for Programmers

The following documentation updates are available for programmers:

3.9.1.6.1. Routines and Functions Updated

Routines and functions documented in the Programmer's Manual have been

updated to reflect the current source code. To see specific changes in a file,

ANSYS, Inc. recommends opening both the old and current files (using a text

editor that displays line numbers), then comparing the two to determine which

lines have changed. You can copy the updated files to your system by performing

a custom installation of the product.

3.9.2. Preprocessing

Memory and CPU time have been significantly reduced when large element

and/or node IDs are used, especially when large gaps exist in the element or

node numbering.

Many more compute-intensive operations, including graphics, are now using

shared-memory parallel if activated.

3.9.3. Postprocessing

The following enhancements have been made to the POST1 general database

results postprocessor.



3.9.3.1. Load Case Combination of Complex Results

LCOPER with Oper2 = CPXMAX now calculates the equivalent strain.

3.9.3.2. Fatigue

The time at which fatigue stresses occurred (from the SET command or manually

input via the FS command) is now captured. Time is not used in the fatigue

calculation and is only for reference purposes.

3.9.3.3. Failure Criteria

LaRc03/04 failure criteria are now available for failure analysis with both plain

stress and full 3-D stress states. The two new failure criteria sets are based on

various composite fiber and matrix failure mechanisms and account specifically

for failure due to fiber kinking. While LaRc03/04 failure criteria can apply to

general orthotropic materials, they are most suitable for unidirectional fiber-re-

inforced composites.

3.9.4. Memory Management

If you wish to control the maximum amount of memory that the program uses,

you can do so by specifying a negative value for -m on the command line, or

by specifying a negative value for the Total Workspace in the Command

Launcher. By default, the program continues to dynamically grow memory as

needed; however, specifying the negative value allows you to stop this dynamic

growth. If the program requires additional memory beyond what is available,

however, it will fail to proceed rather than use disk space as virtual memory.

The database (-db) memory space may grow dynamically as well if system re-

sources (RAM and paging space) are sufficient. To use a fixed space instead,

specify a negative value for -db on the command line, or specify a negative value

for the database in the Command Launcher. If you use a fixed space and the

database requires more space, the program writes to Jobname.page as in

prior releases.

3.9.5. APDL Math Enhancements

APDL Math extends the APDL scripting environment of Mechanical APDL to give

you access to the powerful matrix manipulation routines in the Mechanical APDL

product. A number of new functionalities have been added to the APDL Math

feature in this release. These enhancements give you the ability to:



Other Enhancements

• Perform a dot (or inner) product of two vectors (new *DOT command).

• Perform a Fast Fourier transformation of a specified matrix or vector (new

*FFT command).

• Initialize a vector or dense matrix (new *INIT command).

• Link to an existing matrix, thus providing a means to manipulate a submatrix

of the original matrix (*DMAT command).

• Export a matrix in the DMIG file format (*EXPORT command).

• Normalize a vector (*NRM command).

• Resize an existing matrix or vector (*DMAT and *VEC commands).

• Compute absolute values of complex numbers via the new CXABS parametric

function.

• Access real and imaginary parts of complex numbers.

• List all APDL Math objects (*STATUS,MATH command).

For more information, see "APDL Math" in the ANSYS Parametric Design Language

Guide.

3.9.6. File Splitting

The default file split size (/CONFIG,FSPLT) of 2000 GB (2 TB) has been removed.

Files will no longer split by default.

3.10. Known Incompatibilities

The following incompatibilities with prior releases of are known to exist at release

14.0.

3.10.1. Release 13 Compatibility with Platform MPI

3.10.2. BUCOPT Command Changes

3.10.3. Multiframe Restart Files Are Overwritten by Default

3.10.4. RESUME Command with POST1 Fatigue

3.10.5.Writing and Reading Geometry Items

3.10.6. Results File Format Change

3.10.7. Substructure File Format Change

3.10.1. Release 13 Compatibility with Platform MPI

To continue use of an installed version of Release 13 with ANSYS Mechanical

running HPC with HP-MPI, issue the following command to ensure compatibility:



%AWP_ROOT140%\commonfiles\MPI\Platform\8.1.2\Windows\HP-MPICOMPAT\hpmpicompat.bat

The command displays the "ANSYS 13.0 SP1 Help" dialog box.

3.10.2. BUCOPT Command Changes

The default behavior of the BUCOPT command, which controls buckling analysis

options, has changed. Previously, the default behavior was to find the lowest-

magnitude positive buckling modes. At Release 14.0, the default behavior is to

find the lowest-magnitude negative and positive modes centered on 0.0.

3.10.3. Multiframe Restart Files Are Overwritten by Default

The default behavior for creation of multiframe restart files (Jobname. Xnnn)

has changed. If the maximum limit of 999 files is reached before the analysis is

complete, the Jobname. Xnnn files are now overwritten by default; the program

resets the .Xnnn file numbering back to 1 and continues to write .Xnnn files.

Previously, the analysis would continue but no additional .Xnnn files were

written after Jobname.X999 . See the MAXFILES description on the RESCON-

TROL command for more information.

3.10.4. RESUME Command with POST1 Fatigue

Upon resuming a database via the RESUME command, any POST1 fatigue data

is deleted. You must reenter the data before performing any fatigue calculations.

3.10.5. Writing and Reading Geometry Items

The accuracy of nodal coordinates in the .cdb file generated via the CDWRITE

command has been increased. Although the .cdb files are forward- and back-

ward-compatible between this release and prior releases, some third-party ap-

plications may encounter difficulty when reading the program-generated .cdbfile.

3.10.6. Results File Format Change

The default for the maximum number of results sets (resmax) in the results file

has been increased from 1000 to 10000. The data set indices (DSI, TIM, LSP) on

the results file will therefore be larger compared to prior releases.



Known Incompatibilities

3.10.7. Substructure File Format Change

The global degree-of-freedom record (GDF) is now LONGINT rather than integer.

The substructure file access routine provided with the release (documented in

the Programmer's Manual) has been upgraded to reflect this change, and can

read current results files as well as files from prior releases.



Chapter 4: AUTODYN

The following new features are exposed in ANSYS AUTODYN for Release 14.0:

4.1. 3D Parallel Simulations with Parts Containing Rigid

Body Material(s)

At Release 14.0, the limitation that forced all unstructured parts containing rigid

body material to be assigned to the last task of the parallel decomposition has

been removed. A user can decompose unstructured parts containing rigid body

material on as many tasks as desired. Parallel automatic decomposition(s) will

treat unstructured parts containing rigid body material like any other unstructured

parts in the model.

4.2. Forces on Rigid Bodies

In Release 14.0 it is now allowed to have one or more force boundary conditions

scoped to a rigid body node, edge, or face. In the case of scoping to an edge or

face, the underlying nodes will pick up an equal part of the applied force. Each

force on a rigid node is taken into account relatively to the center of gravity of

the rigid body. For example this could induce a rotational motion of the total

rigid body.

Also, rigid bodies run in parallel support the force boundary condition.

4.3. Nodal Based Strain Tetrahedra

The NBS (nodal based strain) solver option is now available in AUTODYN and

the Explicit Dynamics System for tetrahedra filled with ductile materials. The

advantage of the NBS tetrahedra over the Average Nodal Pressure (ANP) tetra-

hedra is that it can avoid shear locking. In AUTODYN, the NBS solver can be

specified on a part by part basis under the Parts>Solver menu. Additionally, a

non-zero PUSO stability coefficient is used by default to prevent models from

exhibiting spurious low energy modes. In the Explicit Dynamics System, the

choice of solver for tetrahedra is a global option which is set in Analysis Settings.



Known Issues and Limitations with NBS tetrahedra

• Kinematic bilinear and kinematic multilinear hardening have not been implemen-

ted for NBS tetrahedra.

• Only a selection of element variables are currently calculated for NBS tetrahedra.

4.4. Performance Enhancements

Faster merging of joined nodes

The time it takes to merge joined nodes has been improved and should corres-

pond properly to the model size now.

Faster initialization of bonded contact

The time it takes to initialize bonded contact in a model has been improved

significantly. Especially large models with many bonded parts will benefit tre-

mendously from this update.


Chapter 4: AUTODYN

Chapter 5: ICEM CFD

5.1. Highlights of ANSYS ICEM CFD 14.0

Release 14.0 development efforts included enhancement of ANSYS ICEM CFD as

a standalone application as well as continued development of its underlying

technology exposed within the ANSYS Workbench-based Meshing application.

The focus has been on defect reduction and usability with nearly 200 defect and

feature requests resolved in key areas. Specific enhancements are outlined in

the following sections.

5.2. Key New Features/Improvements

ANSYS ICEM CFD 14.0 includes the following new features and improvements:

5.2.1. General

5.2.2. Blocking

5.2.3. Mesh Editing

5.2.4. Output Interfaces

5.2.1. General

• Cart3D is no longer available in ANSYS ICEM CFD.

• Visual3 (post-processing) is no longer available in ANSYS ICEM CFD. You can use

ANSYS CFD-Post instead.

• A number of MultiZone improvements have been made.

• The “Shape source” option in the model tree (Blocking > Edges > Shape source)

displays the edge linking factor (if any).

• Two new unstructured mesh selection bar menus have been added:

– “Select all surface elements” –> Triangles, Quads

– “Select all volume elements” –> Tetrahedra, Hexahedra, Prisms, Pyramids

• The parts information also includes details of hidden geometry/mesh component

parts.



• A button to reverse curve direction has been added under Curve Mesh Setup

(Mesh > Curve Mesh Setup).

• Selection and display speed have been improved.

• Improved geometry support.

– Added support for Creo Parametric 1.0.

5.2.2. Blocking

• The Inherit Part Name option has been added for the extrude faces and 2D to

3D rotate and translate operations.

• The creation of sheet blocks (2D blocks) has been improved.

• The Index Sets option in the Index Control window contains options for saving

and managing index sets based on the index control values.

• The up/down arrow buttons in the Scan Planes window allow you to scroll

through the Block/Grid index.

• The blocking edge information also reports the number of edge segments (if

any).

• The shared wall information is also available.

• Projected blocking faces are displayed based on their association.

• The block split can now be extended through all blocks or all visible blocks.

• An unstructured block can be split using a structured sheet block.

• Reset Association (Blocking > Associate > Reset Association) has two new

options: “Vertices –> Only visible” and “Faces –> Only visible”.

• Link Edge (Blocking > Edit Edge > Link Edge) has a new option called “Inter-

active” that includes a slider to adjust the edge linking factor.

• Split Edge and Move Vertex have been enhanced so that they can be used

when edges are displayed in the “Projected Edge Shape”, “Projected Mesh

Shape”, and “Shape source” modes also.

• Split Edge is now enabled to split in the “Output Blocks” mode also.

• Split Edge contains an option to split all edges into linear edges.

• The Change Edge Split Type option allows you to change the edge split type

to spline, linear, or control point.


Chapter 5: ICEM CFD

• While setting the blocking edge length explicitly (Move Vertex > Set Edge

Length), you can select multiple vertices to be “frozen” when the edge length

is modified.

• The Select next edge segment option allows you to select the next edge seg-

ment cyclically, when the blocking edge comprises multiple segments. The selec-

tion of edge segments is available for the Associate Edge to Curve, Associate

Edge to Surface, and Disassociate from Geometry operations.

• The Run Check/Fix Blocks option allows you to check for inconsistencies in the

internal block data structures and fix them if possible.

• The Min overview option for Pre-Mesh Quality reports the minimum quality

for all applicable quality metrics in the message window.

• The Aspect Ratio metric has been improved.

• Multiblock output contains an option to select the blocks to output.

5.2.3. Mesh Editing

• The Redistribute Prism Edge operation has an additional option allowing you

to redistribute locked prism elements.

• The following mesh refinement options have been added:

– For the Pure refinement method, the option By Mid Side Nodes Only allows

you to globally refine the mesh using mid side nodes.

– For the Pure refinement and Surface Deviation methods, an additional

option allows you to refine only the surface mesh.

• The following smoothing improvements have been made:

– The hex smoothing quality has been improved.

– The smoother speed has been improved by 25%.

– The smoother interface and defaults have been improved for ease of use.

– Support for active parts has been added.

5.2.4. Output Interfaces

• Added output to CGNS 3.1.

• Improved output to ANSYS FLUENT.



Key New Features/Improvements

5.3. Known Incompatibilities

Tetin File Format Change

There are some differences in the Tetin file format at Release 14.0, particularly

with respect to the added parameter related to curves and surfaces. This para-

meter is introduced because of changes to AutoVT in ANSYS Workbench and

can be introduced when the model comes through ANSYS Workbench, including

with the Workbench CAD interfaces.

You can use the File > Save Geometry As Version... > Version 13 File option

to make sure the Tetin file can be read back into the older version of ANSYS

ICEM CFD.

5.4. Documentation

All documentation for ANSYS ICEM CFD 14.0 is accessible using the Help menu.

Please contact us if you would like to attend training. Please visit the ANSYS

ICEM CFD website for more information.

5.4.1. Tutorials

Some tutorial examples are available within the Help. Additional tutorials, input

files, as well as the solved tutorials are available at http://www.ansys.com/tutorials.


Chapter 5: ICEM CFD

http://www.ansys.com/products/icemcfd.asp

http://www.ansys.com/products/icemcfd.asp

http://www.ansys.com/tutorials/

Chapter 6: TurboGrid

This section summarizes the new features in ANSYS TurboGrid Release 14.0.

New Features and Enhancements

The following is a list of new features and enhancements in ANSYS TurboGrid:

• ATM meshes have been improved for cut-off blades.

• The ATM method now supports splitter blades with the following limitations:

– The main and splitter blades must have rounded leading edges and cut-off

trailing edges.

– The leading edge for the main blade is assumed to be positioned ahead

(meridionally) of the splitter leading edge.

– The trailing edges for both blades must be located at the same meridional

position.

Due to enhancements to the ATM method, meshes produced in Release

14.0 will differ slightly from those produced in Release 13.0. It is recommen-

ded that you start “cleanly” (by selecting File > New Case in standalone

mode), rather than loading an existing Release 13.0 case, in order to get the

full benefit of these enhancements.

• Robustness has been improved for the TurboSystem tools.

• You can reduce the mesh size around five-edge vertices (which are a feature of

ATM meshes). For details, see Five-Edge Vertex Mesh Size Reduction.



Chapter 7: FLUENT

7.1. Introduction

The ANSYS FLUENT 14.0 release notes contain information on New Features in

ANSYS FLUENT 14.0 (p. 107), Supported Platforms for ANSYS FLUENT 14.0 (p. 114),

Known Limitations in ANSYS FLUENT 14.0 (p. 115), Limitations That No Longer Apply

in ANSYS FLUENT 14.0 (p. 119), and Updates Affecting Code Behavior (p. 120).

7.2. New Features in ANSYS FLUENT 14.0

New features available in ANSYS FLUENT 14.0 are listed below. References to the

appropriate section in the User's Guide is provided for each new feature (unless

otherwise noted).

Solver-Numerics

• Second order advection scheme is the default setting for all models, except

for the mixture and Eulerian multiphase flows, which will remain first order

by default

• Hybrid initialization method as default with enhanced initialization option

settings (Steps in Using Hybrid Initialization)

• Convergence acceleration available for meshes containing highly stretched

cells for the implicit density based solver (Convergence Acceleration for

Stretched Meshes (CASM))

• High order term relaxation available when applying higher order spatial

discretization (High Order Term Relaxation (HOTR))

• Preconditioned conjugate gradient method (CG) available as a stabilization

method for the AMG linear equation solver (Setting the AMG Method and

the Stabilization Method)

• Modifications to the expert settings for the pseudo transient method. Note

that the old case settings for the pseudo transient method in the Expert

tab of the Advanced Solution Controls dialog box are now obsolete and



no backward compatibility is provided. Please update case files using FLUENT

14.0. (Setting Solution Controls for the Pseudo Transient Method)

Solver-Meshing

• Remeshing

– Option to preserve interior surfaces for postprocessing following poly-

hedral mesh conversion via a TUI command (Converting the Domain to

a Polyhedra)

– Ability to switch from hanging node mesh representation to polyhedral

mesh representation via a TUI command (Converting Cells with Hanging

Nodes / Edges to Polyhedra)

– Ability to remesh 3D wedge/prism cells in a boundary layer mesh as part

of cell zone and face region remeshing methods (Cell Zone Remeshing

Method and Face Region Remeshing with Prism Layers)

– Ability to print the poor element statistics in the console via the Solution

Methods task page (Repairing Meshes and Robustness on Meshes of

Poor Quality)

– Ability to automatically convert the cells that have hanging nodes /

edges as a result of the CutCell zone remeshing to polyhedral cells (Using

the CutCell Zone Remeshing Method)

• Dynamic Meshes

– Ability to include polyhedral cells in dynamic mesh problems (Limitations)

– Ability to specify that the diffusion coefficient is a function of the cell

volume, when diffusion-based smoothing is used to update a dynamic

mesh (Diffusivity Based on Cell Volume)

– Ability to specify a piston pin offset for in-cylinder dynamic mesh applic-

ations (In-Cylinder Settings).

• Moving Meshes

– Automatic calculation of rotational axis origin for nested sliding mesh

reference frames

– Ability to associate zone specific boundary motion with data from system

couplings

Models

• Turbulence


Chapter 7: FLUENT

– Compatibility of the Spalart-Allmaras turbulence model with enhanced

wall treatment (Spalart-Allmaras One-Equation Model)

– Curvature correction available, but not applicable for 2d axisymmetric

geometries (Including the Curvature Correction for the Spalart-Allmaras

and Two-Equation Turbulence Models)

– Algebraic Wall-Modeled LES available for the subgrid-scale models (Al-

gebraic Wall-Modeled LES Model (WMLES) in the Theory Guide)

– The implementation of the Delayed DES (DDES) shielding function, fd

(Equation 4–228 in the Theory Guide), has been optimized in the SST

and Realizable k-ε Detached Eddy Simulation (DES) models to provide

effective shielding. The constant was changed from 8 to 20. With this

change, DDES is now the recommended shielding function for the SST

k-omega model with Delayed DES enabled and is used by default.

• Heat Transfer

– Ability to model heat transfer in porous media without the assumption

of thermal equilibrium between the media and the fluid flow, via a dual

cell approach (Non-Equilibrium Thermal Model)

– Ability to create a duplicate mesh for a single fluid zone directly in FLU-

ENT, e.g. when setting up a dual cell heat exchanger (Copying Cell Zones)

• Finite-Rate Chemistry Model

– Ability to set the surface reaction parameters for the Non-Equilibrium

Thermal Model using the define/models/species/surf-reac-tion-netm-param text command.

– Ability to model chemically activated bimolecular pressure dependent

reaction types (Inputs for Reaction Definition)

• Partially Premixed Combustion Model

– Ability for internal combustion engines to convert products at the end

of one cycle to inert for the next cycle when using the partially premixed

combustion model (Modeling In Cylinder Combustion)

– Ability to include the effects of heat loss or gain in the unburnt mixture,

as well as equivalence-ratio fluctuations, on the laminar flame speed

(Laminar Flame Speed in the Theory Guide)

• Reacting Channel Model



New Features in ANSYS FLUENT 14.0

– Ability to efficiently solve reacting flow in shell and tube heat exchangers

(including curvilinear configurations) with long and thin channels (React-

ing Channel Model)

• Solidification and Melting Model

– Thermal and solutal buoyancy options available as full features (beta

features in Release 13) (Modeling Thermal and Solutal Buoyancy )

• Discrete Phase Model

– Stochastic secondary droplet (SSD) model available as full feature (beta

feature in Release 13) (Modeling Spray Breakup)

– Discrete Element Method (DEM) available as full feature (beta feature in

Release 13) (Modeling Collision Using the DEM Model)

– Implementation of a boiling rate equation for multicomponent particles

to be able to simulate multicomponent vaporization when the total vapor

pressure at the droplet surface exceeds the cell pressure

– Improvements for handling particle interactions with moving walls for

general meshes

– Extension visualization of particle data, including filtering of particle

tracks, sizing of particle spheres with any particle variable, and displaying

DEM specific data to understand the particle physics (Specifying Particles

for Display and Particle Filtering)

– Ability to control the coupled heat-mass solution of droplets and mul-

ticomponent particles (Including Coupled Heat-Mass Solution Effects on

the Particles) and to include vaporization options (Enabling Pressure

Dependent Boiling and Including the Effect of Droplet Temperature on

Latent Heat)

• VOF

– Ability to model surface tension using continuum surface stress method

(beta feature in Release 13) (Including Surface Tension and Adhesion

Effects)

– Coupled with volume fractions option for solving equations (Coupled

Solution for VOF and Mixture Multiphase Flows, Selecting the Pressure-

Velocity Coupling Method, and Controlling the Volume Fraction Coupled

Solution)

• Eulerian Multiphase Model


Chapter 7: FLUENT

– Critical heat flux for wall boiling models available as full feature (beta

feature in Release 13), including boiling model parameters (Including

the Boiling Model)

– Yao and Morel extension of the volumetric interfacial area transport

model to include mass transfer and nucleation effects (beta feature in

Release 13) (Defining the Interfacial Area Concentration)

– Two new drag functions are available for granular flow: the Huilin and

Gidaspow drag law and the Gibilaro drag law (Specifying the Drag

Function)

– The Immiscible Fluid Model from previous releases of ANSYS FLUENT

has been renamed to Multi-Fluid VoF Model.

– The Full Multiphase Coupled pressure-velocity coupling scheme from

previous releases of ANSYS FLUENT has been renamed to Coupled with

Volume Fractions and is now selected by choosing Coupled in the

Solution Methods task page and enabling the Coupled with Volume

Fractions option (Selecting the Pressure-Velocity Coupling Method).

• Eulerian Wall Film Model

– Eulerian wall film model available as full feature (beta feature in Release

13) ("Modeling Eulerian Wall Films")

– Heat transfer support for the Eulerian wall film model ("Modeling Eulerian

Wall Films")

• Population Balance

– Ability to include growth and nucleation phenomena for the Inhomogen-

eous Discrete population balance model

– Availability of the DQMOM method in serial only (beta feature in Release

13) (Enabling the Population Balance Model)

• Acoustics

– Ability to use the Ffowcs-Williams and Hawkings model to include con-

vective effects (The Ffowcs-Williams and Hawkings Model in the Theory

Guide) and specify the locations of moving receivers (Specifying Acoustic

Receivers)

Material Properties

• Convection/diffusion controlled vaporization for droplets (Spalding mass

transfer)




• Urea material extended to include droplet, particle mixture (urea-water) and

mixture (urea-water-air) materials

• film-averaged temperature used for binary diffusivity of vaporizing droplets

(Description of the Properties)

Mesh Morpher/Optimizer

• Ability to define the objective function that is minimized by the mesh

morpher/optimizer as a custom function of output parameters, i.e., values

from flux, force, surface integral, or volume integral reports (Setting Up the

Mesh Morpher/Optimizer)

• Ability to define constraints on the boundary zones, in order to limit the

freedom of particular zones that fall within the deformation region(s) during

the morphing of the mesh (Setting Up the Mesh Morpher/Optimizer)

• Ability to specify commands that are executed before or after the calculation

is run for each design stage generated by the mesh morpher/optimizer

(Setting Up the Mesh Morpher/Optimizer)

Parallel Processing

• Improved distributed/shared memory hybrid AMG algorithm leading to

significant improvements in solver scalability.

• Architecture-aware partitioning has been improved and is performed by

default when the case file is read (Partitioning in the User’s Guide).

• Ability to extend exterior cell creation based on interface face and node

coverage (Extended Neighborhood in the UDF Manual).

• Ability to use Laplacian-coefficient-based AMG coarsening to partition cases

with highly stretched cells (Partition Methods in the User’s Guide)

• FLUENT now makes use of Platform MPI technology (formerly referred to as HP-

MPI) from Platform Computing Corporation ("Parallel Processing")

• Support for PBS Professional in interactive mode (Starting ANSYS FLUENT Us-

ing FLUENT Launcher in the User’s Guide).

• Changes to supported platforms. (refer to the updated tables in "Parallel Pro-

cessing").

• Increased performance of view factor calculations utilizing the GPGPU

hardware (beta feature).

• Enable FLUENT UDFs to execute on GPUS (beta feature).


Chapter 7: FLUENT

User-Defined Functions (UDFs) and User-Defined Scalars (UDSs)

• UDF access to model boiling parameters and quenching correction (

DEFINE_BOILING_PROPERTY in the UDF Manual)

• Linearized mass transfer UDF to model mass transfer in multiphase flows

(beta feature in Release 13) ( DEFINE_LINEARIZED_MASS_TRANSFER in the

UDF Manual)

• UDF access to customize the variables in the PDF look-up table (

DEFINE_PDF_TABLE in the UDF Manual)

Data Import and Export

• Ability to export solution data from select cell zone(s) to ANSYS CFD-Post,

EnSight Case Gold, or FieldView formats (Exporting Solution Data after a

Calculation)

• Ability to export a .cdat file for CFD-Post without also writing a case (.cas )

file (ANSYS CFD-Post-Compatible Files and Exporting to ANSYS CFD-Post)

• Ability to export state (.cst ) files , so that you can use CFD-Post to view

most of the types of postprocessing surfaces created within FLUENT (e.g.,

isosurfaces) (ANSYS CFD-Post-Compatible Files and Exporting to ANSYS CFD-

Post)

Graphics, Postprocessing, and Reporting

• Improved parallel simulation performance when using monitors

• Ability to calculate and postprocess time-averaged custom field functions

• Ability to display the time period over which data has been sampled for the

postprocessing of the mean and RMS values

• Ability to set up multiple monitors in a single case for each one of the fol-

lowing: drag, lift, and moment (Setting Up Force and Moment Coefficient

Monitors and Defining an Animation Sequence)

• Ability to plot and/or record how the objective function varies with each

design stage when using the mesh morpher/optimizer (Setting Up the Mesh

Morpher/Optimizer)

• Ability to postprocess the external temperature (shell), i.e., the temperature on

the surface of a shell conduction wall that is away from the adjacent fluid/solid

cell zone (Alphabetical Listing of Field Variables and Their Definitions)




• Ability to monitor and compute the uniformity index (weighted by area or

mass) of a specified quantity over selected surfaces (Overview of Defining

Surface Monitors and Generating a Surface Integral Report)

• The default settings for the Save Picture dialog box have been changed to

save a color-scale copy of the picture in a JPEG format (Using the Save Picture

Dialog Box)

User Interface

• Ability to set boundary conditions of same type using wildcards

Workbench

• Ability to perform one-way or two-way coupling with FLUENT and Ansoft

products (Maxwell) (Performing FLUENT and Ansoft Coupling in Workbench)

• Output parameter support for drag, lift, and moments (Creating Output

Parameters in the User’s Guide).

• Automatic compilation of UDF libraries by FLUENT ("Compiling UDFs" in the

UDF Manual).

• Source term parameters no longer need to only be specified using SI units

(FLUENT in Workbench User's Guide).

• New text user interface commands (/solve/set/number-of-iterations;

/solve/set/number-of-time-steps; and /solve/set/max-iterations-per-time-

step) to set the number of iterations or time-steps (applicable to FLUENT in

Workbench) (FLUENT Text Command List).

Add-Ons

• Ability to extend a CFD analysis with detailed sensitivity data using the

FLUENT Adjoint Model add-on (FLUENT Adjoint Solver Module Manual).

• Ability to perform battery modeling using FLUENT Battery Model add-on

(FLUENT Battery Module Manual).

7.3. Supported Platforms for ANSYS FLUENT 14.0

Platform/OS levels that are supported in the current release are posted on the

ANSYS website.


Chapter 7: FLUENT

http://www.ansys.com/services/ss-platform-support.asp

7.4. Known Limitations in ANSYS FLUENT 14.0

The following is a list of known limitations in ANSYS FLUENT 14.0.

• File import/export (for a list of supported files, please refer to the table in this

section, under Third-party software)

– Data export to Mechanical APDL result file is not available on the linx64 and

linia64 platforms. (Mechanical APDL data export to .cdb file is available on

all platforms)

– When exporting EnSight Case Gold files for transient simulations, the solver

cannot be switched between serial and parallel, and the number of compute

nodes cannot be changed for a given parallel run. Otherwise, the exported

EnSight Case Gold files for each time step will not be compatible

– EnSight export with topology changes is not supported

– To properly view Fieldview Unstructured (.fvuns) results from a parallel ANSYS

FLUENT simulation

→ Mesh files must be exported from the parallel solver via the TUI command

fieldview-unstruct-grid

→ Mesh and data files should all be exported from parallel ANSYS FLUENT

sessions with the same number of nodes

– Tecplot file import does not support the Tecplot360 file format

• Mesh

– Boundary zone extrusion is not possible from faces that have hanging nodes

– The following features are incompatible with polyhedral cell types:

→ Moving/deforming mesh

• Models

– ANSYS FLUENT supports the Chemkin II format for Oppdif flamelet import

only

– The surface-to-surface (S2S) radiation model does not work with sliding and

moving/deforming meshes

– The work pile algorithm is not compatible with the wall film boundary condi-

tion

– The shell conduction model is not applicable on moving walls

– The heat exchanger model is not compatible with mesh adaption



Known Limitations in ANSYS FLUENT 14.0

– The FLUENT/REACTION DESIGN KINetics coupling is not available on the win64

platform

– DO-Energy coupling is recommended for large optical thickness cases (> 10)

only

– FMG initialization is not available with the shell conduction model

– FMG initialization is not compatible with the unsteady solver

– The MHD module is not compatible with Eulerian multiphase models

– Bounded 2nd order discretization in time is not compatible with moving and

deforming meshes.

– When simulating porous media, the value of the Porosity (defined in the

Fluid dialog box) cannot be 0 or 1 (i.e., it must be in between these values)

if the non-equilibrium thermal model is enabled

– When simulating porous media, the non-equilibrium thermal model is not

supported with radiation and/or multiphase models

• Parallel processing

– These features are currently unavailable in the parallel solver:

→ Discrete transfer radiation model (DTRM)

→ Continuous Fiber Model (CFM) add-on module

→ Data export to non-native formats other than EnSight, FIELDVIEW, Tecplot,

and the generic heat flux data file

• Platform support and drivers

– ANSYS FLUENT is not compatible with the job scheduler on HPC Server 2008

with the packaged version of HPMPI. The default MPI (MSMPI) should be used

– The minimum OS requirements for Linux are SLES 10 or Red Hat Enterprise

5.0

– The path name length to the cpropep.so library (including the lib name) is

limited to 80 characters. (Linux Opteron cluster using Infiniband interconnect

only)

– On Linux platforms, including a space character in the current working direct-

ory path is not supported.

– Visit the ANSYS Customer Portal for the latest Windows graphics FAQ. Version

2.0 or higher of .NET Framework must be installed in order to run ANSYS

FLUENT on the winx64 platform.


Chapter 7: FLUENT

– On Windows platforms, if you are installing ANSYS FLUENT 14.0 on a machine

already having ANSYS FLUENT 13.0, then after installing Platform and Intel

MPI libraries from the pre-requisites, make sure to delete the environment

variables MPI_ROOT (for Platform MPI) and I_MPI_ROOT (for Intel MPI), other-

wise it will conflict while running ANSYS FLUENT 13.0 in parallel mode.

– Remote Solver Facility (RSF) is no longer supported in ANSYS FLUENT.

• Solver

– The non-iterative time advancement (NITA) solver is applicable with only a

limited set of models. See the ANSYS FLUENT User's Guide for more details.

– NITA (using fractional time step method) is not compatible with porous media

– The following models are not available for the density-based solvers:

→ Volume-of-fluid (VOF) model

→ Multiphase mixture model

→ Eulerian multiphase model

→ Non-premixed combustion model

→ Premixed combustion model

→ Partially premixed combustion model

→ Composition PDF transport model

→ Soot model

→ Rosseland radiation model

→ Melting/solidification model

→ Enhanced Coherent Flamelet model

→ Inert model: transport of inert species (EGR in IC engines)

→ Dense discrete phase model

→ Shell conduction model

→ Floating operating pressure

→ Spark ignition and auto-ignition models

→ Physical velocity formulation for porous media

→ Selective multigrid (SAMG)

– The pressure-based coupled solver is not available with the following features:



Known Limitations in ANSYS FLUENT 14.0

→ Porous jump boundary condition

→ Fixed velocity

• User-defined functions (UDFs)

– Interpreted UDFs cannot be used while running in parallel with an Infiniband

interconnect. The compiled UDF approach should be used in this case

• Third-party software

– FLUENT-Platform LSF integration is not supported on the MS Windows plat-

form

– FLUENT-SGE integration is supported only on Linux platforms

– Wave and GT-Power coupling are available only with stand-alone ANSYS

FLUENT and not in the Workbench environment

– Wave is not supported on Windows 64–bit platforms

– ANSYS FLUENT 14 uses the CHEMKIN-CFD KINetics library 2.4. This version

no longer supports the linia64 platforms

– GT-Power is supported on the 32- and 64-bit Linux and Windows plat-

forms.

– Supported versions of third party software are listed below:

Supported VersionThird Party Software

6.9Abaqus

5.1Altair HYPERMESH

15.0ANSOFT-MAXWELL

5.0AVS

2.5–3CGNS

2.4CHEMKIN

4.2Data Explorer

9.1.2Ensight

7.6EnSight 6 (TUI only)

9.1.2EnSight Case Gold

1.3FAST

12.2.1Fieldview

2.4Gambit


Chapter 7: FLUENT

7.0GT-POWER

17.15HOOPS

IDEAS NX Series 11I-DEAS

970.0LSTC-DYNA

3.0.5MPCCI

8.1.2MPI-HP/Platform

4.02MPI-Intel

1.3.3MPI-OpenMPI

Bulk data input file - MSC.NAS-

TRAN 2007

NASTRAN

3.0PATRAN

PTC/Mechanica Wildfire 4.0PTC MECHANICA

9.0 (Export). Tecplot file format,

version 11.2 (Import)

TECPLOT

3.6.0VKI

8.3WAVE

• Other

– The IRIS Image and HPGL hardcopy formats are no longer supported in ANSYS

FLUENT

– When using ANSYS FLUENT with the Remove Solve Manager (RSM):

→ Only one copy of a saved project that is in the pending state can reconnect

successfully.

→ System Coupling is not supported.

→ Ansoft Coupling is not supported.

→ UDFs are supported with limitations as detailed in Submitting FLUENT

Jobs to RSM in Workbench User Guide

7.5. Limitations That No Longer Apply in ANSYS FLUENT

14.0

• All drag laws are now available with the Multi-Fluid VOF model.



Limitations That No Longer Apply in ANSYS FLUENT 14.0

Note

The Multi-Fluid VOF Model was previously referred to as the

Immiscible Fluid Model.

• The shell conduction model can now be used with the non-premixed and

partially premixed combustion models.

• The CutCell zone remeshing method can now be used on polyhedral cells.

• 2nd order discretization in time with moving and deforming meshes is now

supported as a beta feature. Note that bounded 2nd order discretization in

time with moving and deforming meshes remains unavailable.

• Non-reflecting boundary conditions are now supported in the pressure-

based solver as a beta feature.

7.6. Updates Affecting Code Behavior

The sections in this chapter contain a comprehensive list of the code changes

implemented in ANSYS FLUENT 14 which may affect the ANSYS FLUENT 13

solutions.

Please note that text that is in bold font represents key words that may facilitate

your search for the changes in code behavior.

Solver-Numerics

• Change to second order spatial discretization as the default method for the

pressure based solver.

– The second order discretization scheme will provide improved solutions

compared to the first order scheme used in previous releases. However, cases

may take more iterations to converge and/or need changes to the solver

settings for optimal convergence.

– Previously setup cases are not affected and will retain the old default. New

cases will use the updated default method.

• Change in default method of boundary limiting.

– The new default boundary gradient limiting procedure improves solutions,

particularly for cases with coarse meshes near boundaries. It also improves

convergence by avoiding out of bound values during iterations. To revert to

pre-FLUENT 14 code behavior, use the following rpvar command:


Chapter 7: FLUENT

(rpsetvar ‘ recon/bc-minmax-id-new 1)

Solver-Meshing

• Several dynamic mesh algorithms related to remeshing and smoothing have

been improved. These changes can result in slightly different meshes for dynamic

mesh simulations that can effect the solution.

• The polyhedra conversion algorithm has been improved. Using the same mesh

as a starting mesh, the polyhedra conversion might produce a slightly different

polyhedra mesh.

• The quality based mesh smoothing (in the Smooth/Swap menu) has been

improved and might return meshes of better quality.

Turbulence

• The new default near-wall treatment for the Spalart-Allmaras turbulence

model is now the enhanced wall treatment with the Low-Re damping option

enabled. The Low-Re damping option has been removed from the GUI. To revert

to FLUENT 13 settings, first turn off the enhanced wall treatment for the Spalart-

Allmaras model via the /define/models/viscous> sa-enhanced-wall-treatment? text command.

A new text command is then available that allows you to turn the Low-Re

Damping on or off: /define/models/viscous> sa-damping?

• Improvements have been made to scale-resolving turbulence simulations em-

ploying an underlying one- or two-equation RANS model (i.e. SAS or DES) and

using a synthetic turbulence generator at an inlet or at a RANS/LES interface.

Results may vary from previous releases.

• Rough wall treatment has been improved for epsilon-equation based

turbulence models to avoid reduction in effective roughness when the

near-wall mesh is refined. This is the new default treatment. Set the following

rpvar command to false to return to pre-FLUENT 14 code behavior.

(ke-rough-wall-treatment-r14? #f)

• The implementation of the Delayed DES (DDES) shielding function, fd

(Equation 4–228 in the Theory Guide), has been optimized in the SST and

Realizable k-ε Detached Eddy Simulation (DES) models to provide effective

shielding. The constant was changed from 8 to 20. With this change, DDES

is now the recommended shielding function for the SST k-omega model

with Delayed DES enabled and is used by default.



Updates Affecting Code Behavior

• The calculation of SAS-specific terms at periodic boundary conditions has

been corrected and will yield improved model behavior.

Heat Transfer

• For the shell conduction model at T-junctions formed with 2 walls, the heat-

conduction treatment has been corrected and will yield improved results.

• Postprocessing Wall Function Heat Transfer Coefficient (WFHTC) has been

corrected. FLUENT no longer reports a value of zero for WFHTC on adiabatic

walls. The previous behavior can be recovered with the following rpvar command.

(rpsetvar 'wf/zero-wfhtc-on-adiabatic-walls? #t)

Reacting Flow

• The diffusion for the spark model is now limited to cells in close proximity

to the spark region specified. This results in a more realistic prediction of

spark propagation. Historically, the spark model would affect diffusion

throughout the flow domain, and the new treatment only affects diffusion

around the location of the spark.

Discrete Phase Model

• Movement and deformation of sliding, moving, and deforming meshes are

now considered during the particle tracking. This improves the accuracy of

particle tracks when particles are reflected from moving walls, especially in

cases without wall boundary layers. Results may vary from previous releases.

This effect can be disabled by using the following scheme commands:

(rpsetvar 'dpm/consider-transient-mesh-movement? #f)

(check-mesh-interpolate-in-time)

• A boiling rate equation for multi-component particles has been introduced,

which has been derived consistently with the existing vaporization and boiling

models in ANSYS FLUENT. This boiling rate replaces the rate equation used pre-

viously for the multicomponent particle boiling regime. The documentation has

been updated in the Theory Guide. This change cannot be reversed through an

rpvar.

• For multicomponent particles, the true boiling temperature is used to limit the

Langrangian wall film model. Previously, the minimum of the component boiling

points was used. The user cannot change this selection.


Chapter 7: FLUENT

• In the DPM energy balance, the latent heat is computed consistently in the

droplet and Lagrangian film models. Previously, the film model always used a

constant latent heat value. The user cannot revert to the old method.

• Improvements to the droplet Vaporization Law numerics result in a more accur-

ate vaporization history. As a result of the improved accuracy, computed traject-

ories may be longer compared with FLUENT 13.0. In addition, computational

time may increase compared to FLUENT 13.0 if the computed vaporization time

is longer. The change can be reverted by issuing the following commands in

sequence:

(rpsetvar ‘ dpm/limiting-time-algorithm? #f)

(rpsetvar ‘ dpm/minimum-vapor-fraction-new 0.01)

(dpm-parameters-changed)

• The Multicomponent Law numerics have been revised to speed up the compu-

tation. When importing case files from previous versions, you will need to disable

Coupled Heat-Mass Solution for Multicomponent droplets to take advantage

of the increased computational speed. This setting is found on the Numerics

tab of the of the Discrete Phase Model dialog box.

• Several changes have been made to the Lagrangian wall film model that lead

to more consistent evaporation of the wall film for pure and multi-component

wall films. In addition, splashing of droplets has been improved to consider

only one sampling from the cumulative probability density function of the un-

derlying size distribution. These changes cannot be reversed.

Eulerian Multiphase Models

• The expression for ‘b’ in the Luo breakage kernel model in Table 2.1: "Luo

Model Parameters" of the Population Balance Manual has been changed by

a scaling factor, β-1

, where β=2.047 . A domainvar, ‘pb/luo-beta-factor , has been introduced to make this factor user-modifiable using the

following scheme command:

(domainsetvar <pb-domain-id> 'pb/luo-beta-factor<value>)

The FLUENT 13 behavior can be recovered by issuing the preceding com-

mand with <value> =1.




Acoustics

• Ffowcs Williams-Hawkings solver: reception time calculation is improved by

interpolating the emitted timestep signal between the receiver timesteps covered

by the received signal.

UDF Programming Interface

• Node unions replaced with node SVARs.

– Two node union data members n1 and n2 in node_struct have been

replaced by SV_N_TMP_0 and SV_N_TMP_1. SV_N_TMP_2 is also

available if needed. Unlike previous versions, UDF developers will need

to allocate/deallocate this storage in order to use the following node

union macros:

→ NODE_MARK (uses SV_N_TMP_0)

→ NODE_RVAL1 (uses SV_N_TMP_0)

→ NODE_VISIT (uses SV_N_TMP_1)

→ NODE_RVAL2 (uses SV_N_TMP_1)For your convenience, two macros (ALLOCATE_NODE_SVAR and

DEALLOCATE_NODE_SVAR) have been added to facilitate allocating

this storage. For example, in order to use NODE_MARK, you would use

the commands:

ALLOCATE_NODE_SVAR(SV_N_TMP_0)

DEALLOCATE_NODE_SVAR(SV_N_TMP_0)

– Many node union macros such as NODE_VISIT and NODE_MARK have

been used for flagging the nodes, so it is not really necessary to use a

node union variable to do it. For your convenience, 3 new macros have

been added. Please use CLEAR_NODE_VISITED to initialize a node

flag, SET_NODE_VISITED to mark a node, and NODE_IS_VISITEDto check the node status. You may also use function

Clear_Node_Flags (domain, NODE_VISITED_FLAG) to initialize

all nodes in the domain, and use Exchange_Node_Flags (domain,NODE_VISITED_FLAG) to exchange node flags in parallel.

• For multiphase simulations, the linearized mass transfer UDF is now used by

default. To revert to the previous behavior, use the TUI command

solve/set/expert and enter no at the Linearized Mass TransferUDF? prompt. Alternatively, you can use the following scheme command:


Chapter 7: FLUENT

(rpsetvar ‘ mp/mt/udf/linearized? #f)




Chapter 8: CFX

This section summarizes the new features in ANSYS CFX and CFD-Post Release

14.0.

8.1. New Features and Enhancements

8.2. Incompatibilities


New features and enhancements to ANSYS CFX and CFD-Post introduced in Re-

lease 14.0 are highlighted in this section.

8.1.1. General Changes to ANSYS CFX

Parallel Processing

• The HP MPI parallel communications method has been replaced by the Platform

MPI method, which is fundamentally the same, and you should not see any

change in performance. When loaded into ANSYS CFX, old cases that used HP

MPI will automatically be updated to use Platform MPI.

• The MPICH2 parallel communications method has been withdrawn from use on

Windows. When loaded into ANSYS CFX, old cases that used MPICH2 will auto-

matically be updated to use Platform MPI.

8.1.2. ANSYS CFX-Solver

New features and enhancements to the CFX-Solver introduced in Release 14.0

are highlighted in this section.

8.1.2.1. CFX-Solver

• To improve the efficiency of calculations for turbomachinery applications, the

Time Transformation and Fourier Transformation methods for Transient Blade

Row cases have been introduced.



• The default intersection method at Generalized Grid Interfaces has been changed

from the Bitmap method to the Direct method. This should improve the accuracy

of intersection and performance.

• Prior to this release, the CFX-Solver determined the license it would check out

based on a set of internal algorithms. This sometimes was inconsistent with the

license preferences, as these were not necessarily respected by the solver.

In Release 14, license checkouts use the license preferences and follow the

checkout order you specify (consistent with product capability levels), which

enables you to control the license checkout order.

8.1.3. ANSYS CFX-Pre

No changes have been made to CFX-Pre in this release.

8.1.4. ANSYS CFX-Solver Manager

New features and enhancements to CFX-Solver Manager introduced in Release

14.0 are highlighted in this section.

• In previous versions of ANSYS CFX, CGNS 2.4 ADF files were written by CFX-

Solver Manager and scripts provided with CFX. Starting with Release 14.0, the

capability has been extended so that you can also write to CGNS 3.0 files in either

ADF or HTF5 format. Noise source strength files written by CFX-Solver are still

exported using CGNS 2.4.

• In previous versions of ANSYS CFX, CGNS files that were written by CFX-Solver

Manager and then loaded into CFD-Post had variable names that were limited

to 32 characters. Whenever the name of the variable exceeded 32 characters,

the internal name for the variable, which is shorter but more cryptic, was written

instead. Starting with Release 14.0, CGNS files written by CFX-Solver Manager

may optionally use a new additional data tag that is not subject to the 32-char-

acter limit, and that holds the ANSYS CFX Solver Name for each variable. CFD-

Post reads the new tag in preference to the old tag, if the new tag exists.

8.1.5. ANSYS CFD-Post

New features and enhancements to CFD-Post introduced in Release 14.0 are

highlighted in this section.

Hub-to-Shroud Plots


Chapter 8: CFX

• You can create hub-to-shroud plots based on two streamwise locations (or blade

aligned, or blade aligned linear). The plots will show a difference in the circum-

ferentially averaged variable between the two locations.

Vectors of Particle Variables on Particle Tracks

• You can plot vectors of particle variables on FLUENT particle tracks.

High-definition Movie Output

• You can create high-definition movies ("HD Video 720p" and "HD Video 1080p")

that play on all typical players.

Transient Blade Row Post-processing

• Solution variables are loaded and are available for plots.

• The file behaves like a transient case. Timestep switching, time charts, and anim-

ations are supported. In addition, uniform and custom timestep sampling is

supported.

FLUENT Internal Combustion (IC) Engine Cases

• IC engine cases with changing topology are now supported. Boundaries and

domains that are not available at the selected timestep are greyed out in the

Outline tree.

CGNS Files

• Face based boundary definition (in addition to nodal definition) is now supported.

• Files written with CGNS library version 3.0 or below are now supported.

Time Chart Performance

• The calculation of time charts has been sped up significantly, in cases where

unrelated objects (such as streamlines, planes, and so on) are present in the

state.

CFD-Post installation Size

• The disk size of the stand-alone CFD-Post installation has been significantly re-

duced.



New Features and Enhancements

8.1.6. ANSYS CFX Documentation

No organizational or display mechanism changes have been made to the ANSYS

CFX documentation in this release.

8.1.7. ANSYS CFX in Workbench

No changes have been made to ANSYS CFX in Workbench in this release.


This sections highlights differences in the behavior between Release 13.0 and

Release 14.0 of ANSYS CFX and CFD-Post.

8.2.1. CFX-Solver

The Release 14.0 version of CFX-Solver is compatible with the Release 14.0 license

server but is not compatible with the Release 13.0 license server.

CFX Distributed Parallel in ANSYS CFX 13 uses HP-MPI while CFX Distributed

Parallel in ANSYS CFX 14 uses PCMPI. These different installations of MPI can

have a conflict when installed on the same Windows machine. To avoid such a

conflict, be sure to follow the installation instructions that appear during Platform

MPI installation.

Below is a list of numerics improvements and other changes made for the CFX-

Solver in Release 14.0. The changes are believed to be generally helpful and

should be reverted only in the event of a problem.

Convergence behavior changes (that do not affect the converged

solution):

Multiphase Flow

In order to mitigate against convergence difficulties encountered in some mul-

tiphase flow problems, the value of the expert parameter ggi ap relaxation is

multiplied internally by 0.75. This occurs in the following situation only

• Multiphase flow

• Non-trivial turbulence dispersion force included

• Coupled volume fraction solution algorithm.


Chapter 8: CFX

Thus, the default value of 1.0 is converted internally to 0.75. If you override the

default by a smaller value, then the new value is also multiplied internally by

0.75. This ensures that you retain some control over this parameter. The above

restrictions ensure that the numerics changes are focused on a narrow range of

problems, hence do not deteriorate convergence of other classes of problems.

The changes occur in CS 44468.

Miscellaneous

• A bug has been fixed that could cause convergence differences depending on

the solver internal memory structure.

• A bug has been fixed which could influence the convergence behavior of cases

with CEL expressions based on the shear strain rate.

Discretization changes (that affect the converged solution):

Boundary Conditions/GGI Interfaces

• A new default for the intersection method: ‘Direct’ instead of ‘Bitmap’.

• The usage of the discernible area fraction parameter has been modified for the

direct intersector. This can cause small differences for GGI cases.

Multiphase

A bug has been fixed that permitted coalescence of certain size groups in the

MUSIG model. This bug is platform-dependent. The fix can be reverted by setting

the expert parameter: ”musig mass coalescence tolerance = 0.0”.

Properties

The default value for the expert parameter 'alternate saturation clipping' has

been changed to true. This resolves some incorrect behavior when inverting

property tables in which the saturation curve passes through the 2d table, and

may lead to different results for cases involving phase change (for example, real

gas cavitation and equilibrium phase change).

Miscellaneous

• The accuracy of the units [debye,D], [rankine,R] and [revolution,rev] in

etc/units.cfx has been improved. This can have an influence on the results

if those units are used in the CCL file.

• A bug has been fixed in the Bounded CDS advection scheme.



Incompatibilities

Parallel

The coupled partitioning method has been improved. The requirement that each

partition owns at least one core vertex in each domain no longer exists. This can

be reverted by setting the following expert parameter: “part_multizone_core_ver-

tex = T”.

8.2.2. CFX-Pre

No changes have been made to CFX-Pre in this release.

8.2.3. CFX-Solver Manager

No changes have been made to CFX-Solver Manager in this release.

8.2.4. CFD-Post

This section describes the operational changes, the procedural changes (actions

that have to be done differently in this release to get an outcome available in

previous releases), and the support changes (functionality that is no longer

supported) in Release 14.0 of CFD-Post.

Operational Changes

In Release 13.0, forces at interfaces or cut planes were approximated by adding

pressure and mass flow force. However, this calculation will not balance the

forces at walls. Release 14.0 has a more accurate calculation of the approximate

force, which is derived by subtracting the mass flow force from the pressure

force at interfaces and cut planes.

In FLUENT there is an option to have additional post-processing variables written

to FLUENT DAT files. There is a change in behavior in the reading of variables

from FLUENT files. In Release 13, when selecting to output additional variables

in a DAT file in FLUENT (via the Data File Quantities panel), you had to choose

only the variables that were not automatically output to DAT file. Otherwise, the

chosen variable would show up in CFD-Post with a numerical suffix (for example,

you will see 'Velocity 1' in addition to 'Velocity'). As an alternative, you could use

the CDAT file format to specify exactly which variables to output to CFD-Post.

As of Release 14, when a variable is written to the user-specified section of a

DAT file, CFD-Post will check to see if the same variable is available in the basic

section of the DAT file. If so, the variable from the basic section will not be read


Chapter 8: CFX

in CFD-Post, only the variables from the user-specified section of the DAT file

will be read.

Reading of 13.0 FLUENT cases that have multi-configuration information can fail

in CFD-Post 14.0. A workaround is to set the FLUENT_MULTICONFIG_OFF=1environment variable before running CFD-Post.

Procedural Changes

There are no procedural changes in this release.

Support Changes

There are no support changes in this release.



Incompatibilities

Chapter 9: POLYFLOW

9.1. Introduction

ANSYS POLYFLOW 14.0 is the third version of ANSYS POLYFLOW to be integrated

into ANSYS Workbench. Starting in version 12.1, ANSYS POLYFLOW users were

able to create interlinked systems with geometry, meshing, solution setup, solver

and postprocessing inside ANSYS Workbench, using shared licensing and HPC.

Blow molding and extrusion application-specific versions of ANSYS POLYFLOW

were introduced to allow specific industrial processes to be simulated. With regard

to modeling, two new models were introduced: the volume of fluid (VOF) model

for free surface modeling in a fixed domain; and the discrete ordinates (DO)

model for radiation.

In ANSYS POLYFLOW 14.0, the ANSYS Workbench integration, licensing, and

modeling capabilities have been further enhanced to meet the needs of ANSYS

POLYFLOW users.

Note

ANSYS POLYFLOW 14.0 is installed under ANSYSInc\v140\polyflow on Windows and ansys_inc/v140/poly-flow on Linux platforms.

ANSYS POLYFLOW 14.0 is available within ANSYS Workbench for

Windows and Linux platforms.

9.2. New Features

The new features in ANSYS POLYFLOW 14.0 are as follows:

• ANSYS POLYFLOW can use Named Selections from ANSYS Meshing.

• ANSYS POLYFLOW can read meshes created using the Assembly Meshing

group in ANSYS Meshing or the CutCell mesher in TGrid.



• You can create user-defined templates via the UPDT button to paramet-

erize the values for the absissa and/or ordinate of:

– multi-ramp functions of time or S (for evolution problems), when the

multi-ramp functions are applied on a parameter of a model (e.g., fac,

vn, cp)

– multi-ramp functions of X, Y, or Z coordinates when defining the average

temperature, the average concentration, the initial fluid fraction for

volume of fluid (VOF) problems, or the initial thickness distribution of

films or the parison for shell models.

• ANSYS POLYFLOW allows you to define force-driven mold motion for

shell surface parisons, with limitations on the maximum displacement.

• A new heuristic technique has been implemented for defining the order

of elimination of the equations in the AMF linear solver (which is the

default solver in ANSYS POLYFLOW 14.0). This technique can lead to

significant reductions in CPU time and memory requirements under

certain circumstances. Improvements should be observed for fixed and

deforming domain simulations when the mini-element interpolation is

used. The new heuristic technique does not make any difference when

pressure stabilization is enabled (linear interpolation of velocities).

• ANSYS POLYFLOW provides further options for decoupling the calcula-

tion of various fields:

– For internal radiation, you can decouple the calculation of the velocities,

irradiance, and/or temperatures.

– For transport of species, you can decouple the calculation of the velocities

and species.

• ANSYS POLYFLOW allows you to export temperature and thickness data

to results files that can be used for further simulations in ANSYS

Mechanical.

• ANSYS POLYFLOW allows you to simulate contact release (i.e., the de-

tachment of a free surface that has come into contact with a wall) for

a 3D or shell model, as part of a blow molding or thermoforming sim-

ulation.

• ANSYS POLYFLOW allows you to convert .poly files written by ANSYS

Meshing to the POLYFLOW format.

• ANSYS POLYFLOW can read and recognize 1D and 2D PMeshes exported

from ANSYS ICEM CFD and ANSYS Meshing.


Chapter 9: POLYFLOW

• POLYFLOW allows you to convert a mesh into a sliceable mesh in

POLYDATA, so that you can employ certain remeshing techniques that

are otherwise incompatible with the mesh or easily modify aspects of

an existing sliceable mesh.

• A POLYFLOW system can be connected to an ANSYS Mechanical system

in Workbench, so that you can transfer thickness and temperature data.

• A series of templates are available. These templates are in the form of

Workbench projects, and each contains a complete simulation from

geometry to postprocessing, including design parameters. You are thus

able to connect your own geometry, adapt the design parameters in

ANSYS DesignXplorer, and simply update the project. A predefined re-

port is then automatically created in ANSYS CFD-Post. These templates

currently cover the main applications of POLYFLOW: extrusion, blow

molding, and thermoforming.

• POLYFLOW documentation is available via the Help pull-down menu

in the various POLYFLOW applications, as well as the Help chart button

in ANSYS POLYMAT and ANSYS POLYCURVE.

• For a boundary that experiences both incoming and outgoing flows

(e.g., an outlet with backflow) as part of a nonisothermal simulation,

ANSYS POLYFLOW allows you to impose a temperature on the flow

that enters the domain via the Incoming fluid temperature thermal

boundary condition.

• The view in the ANSYS POLYFUSE Graphics Display window can be

manipulated via a graphics toolbar (which replaces the View Options

panel), as well as shortcut keys.

• A more user-friendly graphical user interface has been introduced for

ANSYS POLYMAT and ANSYS POLYSTAT. The updated GUI provides a

higher quality display of the results and allows an interactive manipu-

lation of graphical objects.

• POLYFLOW provides access to POLYFLOW project templates, which are

Workbench project files that you can modify in order to quickly and

easily set up your own problem. These templates include blow molding,

extrusion, and thermoforming problems.

9.3. Defect Fixes

The defect fixes in ANSYS POLYFLOW 14.0 are as follows:



Defect Fixes

• It is now possible to get the ideal (pointwise) thickness distribution when

optimizing parison in blow molding/thermoforming simulations.

• Error messages about inconsistencies between mesh and data files has been

corrected in ANSYS POLYDATA.

• A fix was introduced to avoid the solver crashes when solving a pressing

simulation with the secant method.

• It is now possible to display fields on PMeshes in CFD-Post.

• Force fields on boundaries now have units in CFD-Post.

• Error messages about problems during mesh conversion have been corrected.

• A fix was introduced to avoid a crash of ANSYS POLYDATA when switching

from the sliding mesh setup to steady state.

• A fix was introduced for shell blow molding / thermoforming problems that

use the non-isothermal KBKZ model, to ensure that the temperature depend-

ence is applied to the additional viscosity.

• A fix was introduced to avoid POLYDATA crashes as a result of double-

clicking in the tree view.

• The Set units for CFD-Post or Ansys Mapper menu item has been removed

from the Outputs menu for mixing tasks.

• The unsupported Mini-element for velocities, linear pressure interpolation

for viscoelastic flows is no longer accessible in the Interpolation menu of

POLYDATA.

• The formulation and interpolation of the Lagrange multiplier for slipping

and fluid-structure interaction has been corrected.

• A fix was introduced to avoid POLYDATA crashes as a result of converting

a viscoelastic VOF sub-task into a Newtonian VOF sub-task.

• For shell blow molding problems in which evolution is applied on the infla-

tion pressure, the EVOL summary menu (opened via the LSEV button) has

been corrected so that it no longer reports an inflation pressure of zero.

• A fix was introduced to avoid POLYDATA crashes as a result of reading a

material data file for a contact case.

• The POLYFLOW listing file has been improved for cases when the solver

stops due to insufficient memory.

• A fix was introduced to ensure that the POLYFLOW listing file reports the

correct number of processors when running in parallel.


Chapter 9: POLYFLOW

• A fix was introduced to ensure that the mathematical library does not use

more processors than the number you specified.

• A fix was introduced to ensure that the ordering of input parameters in

DesignXplorer is not inconsistent when template parameters are modified

in POLYDATA.

• The direction of the rotation axis of a moving part (that employs the mesh

superposition technique) no longer affects its velocity.

• Contact detection has been improved for shell molds.

• A fix was introduced to avoid POLYDATA crashes when you modify the dir-

ection of generation during the creation of a 3D mesh from a shell result.

• Running POLYFLOW in standalone mode under ANSYS licensing is now

easier, as you no longer have to set the environment variable.

• DOS windows no longer pop up repeatedly when updating a series of Design

Points for POLYFLOW systems in Workbench.

• The axis and speed of rotation of a moving part (that employs the mesh

superposition technique) can now be flagged as a parameter of a user-

defined template.

• A fix was introduced to avoid POLYDATA crashes when you modify the type

of a mold during a contact problem.

• A fix was introduced to avoid POLYDATA crashes when a change of units

is rejected.

• It is now possible to define all components of the force applied on a mold

as template parameters.

• It is now possible to define independent time histories for the transient

shear rate and the transient elongational rate when fitting material paramet-

ers to your data in POLYMAT.

9.4. Known Limitations

The known limitations for ANSYS POLYFLOW 14.0 are as follows:

• The Interrupt action in ANSYS Workbench has no effect on an ANSYS

POLYFLOW solver run.

• You cannot perform any actions that modify an ANSYS POLYFLOW system

(e.g., saving or closing a project, duplicating an ANSYS POLYFLOW system)

while an ANSYS POLYFLOW tool is open. In some cases, ANSYS Workbench

will allow such an action, but an error is generated.



Known Limitations

• CutCell meshes are not compatible with mixing or volume of fluid (VOF)

tasks, viscoelastic flow sub-tasks, contact detection, internal radiation,

the Narayanaswamy model, flow-induced crystallization, or the adaptive

meshing technique. Moreover, the interpolation for the velocity field

is limited: for a pure CutCell mesh, it must be the linear element; for a

portion of a CutCell mesh that has been converted into a sliceable

mesh, it can be either the linear element or the mini-element.

• Due to some modifications of the contact algorithm to accommodate

the needs of the automatic contact release feature, you may need to

make small revisions to the contact parameters of a blow molding or

thermoforming problem that was originally set up using version 13.0,

in order to run it using version 14.0.

• IGES files exported by POLYFLOW always use millimeters for the unit

of length. When planning to export an IGES file from POLYFLOW, it is

highly recommended that you use millimeters in your original CAD

model or when creating the geometry in ANSYS DesignModeler. You

should then use the mm/g/s unit system in POLYFLOW. If another unit

systems is used, you may have difficulties importing the IGES file of the

deformed geometry back into ANSYS DesignModeler or any other CAD

tool.

• If you are using Windows XP, POLYDATA may crash when importing a

material data file. This can be avoided if you change the default TEMPdirectory to a directory that is not deeply nested in other directories

(e.g., change it to D:\temp ).


Chapter 9: POLYFLOW

Chapter 10: Icepak

10.1. Introduction

ANSYS Icepak 14 is a release of ANSYS Icepak that has new features and defect

fixes. New features are listed in the following section of this document. A list of

defects fixed in this release is accessible on the ANSYS Customer Portal

(www.ansys.com/customerportal ).

10.2. New and Modified Features in ANSYS Icepak 14

• Graphical User Interface

– Redesigned basic parameters, solve, preference, utility dialog and forms, ob-

jects and mesh panels.

– Redesigned file browser dialogs, top menus, post-object right click menus,

right click menus of object trees, post, report, optimization/trials, radiation,

plot dialogs and more.

– Redesigned tables for better editing and clarity.

– Redesigned Model manager window with multiple tabs. See The Model

manager Window of the User's Guide.

– Implemented new icons for all buttons.

– Implemented context-aware right click menus in graphics window.

– Implemented Selected solid, solid/wire functionality and improved high-

lighted background color. See Using the Context Menus in the Graphics Dis-

play Window of the User's Guide.

– Implemented color selection of object mesh lines. See Displaying the Mesh

on Individual Objects of the User's Guide.

– Implemented rotation of an object about a point or its centroid. See Reposi-

tioning an Object of the User's Guide.

– Implemented Surface mesh color and Plane mesh color in the Mesh control

panel. See Displaying the Mesh of the User's Guide.




– Implemented an additional option to specify transparency using the object

right click menu in the Model tree or graphics window. See Using the Context

Menus in the Graphics Display Window of the User's Guide.

– Implemented default locations for projects and files. See Miscellaneous Options

of the User's Guide.

• ECAD Import/Export

– Implemented import of stacked die packages using MCM/SIP databases. See

User Inputs for Stacked Die Packages of the User's Guide.

– Implemented import of stacked die packages using ANF files. See Adding a

Package to Your ANSYS Icepak Model of the User's Guide.

– Implemented the modification of mcm/sip import for stacked die packages.

See User Inputs for Stacked Die Packages of the User's Guide.

– Implemented import of POP (Package on package) packages for package

modeling. See User Inputs for Package on Package of the User's Guide.

– Implemented import of ODB++ format for block and package modeling. See

Adding a Block to Your ANSYS Icepak Model and Adding a Package to Your

ANSYS Icepak Model of the User's Guide.

– QFN package type is available for lead frame package modeling. See User

Inputs for Lead-Frame Packages of the User's Guide.

– QFP package object has been enhanced to model additional details. See User

Inputs for Lead-Frame Packages of the User's Guide.

– Enhanced trace and via modeling for pcb boards and packages.

– Implemented 64-bit utilities for trace and via modeling.

• Model Import/Export

– CSV export/import capabilities for variables and trials in parametric runs. See

Import and Export of Trial Data of the User's Guide.

– CSV import capabilities for polygonal sources. See CSV/Excel Files of the User's

Guide.

• Modeling and meshing

– Implemented 2D objects, except for conducting thin plates and sides of

network objects and network blocks, permitted on a zero slack boundary.

– Implemented transparency option for surfaces when using the solar loading

model. See User Inputs for the Solar Load Model of the User's Guide.


Chapter 10: Icepak

– Implemented new ANSYS Workbench color palette for Icepak objects. See

Editing the Graphical Styles of the User's Guide.

– Improved interpolation method for 3D spatial power profile modeling. See

Miscellaneous Options of the User's Guide.

– Implemented new and improved 2D interpolation methods for point profiles.

See Miscellaneous Options of the User's Guide.

– Redesigned the power and temperature table for quick editing of network

nodal powers. See Setting Up the Power and Temperature Limit Values of

the User's Guide.

– Optimized meshing design incorporates importing meshes of pre-meshed

assemblies.

– Implemented layer stack-up design for PCB objects. See Adding a PCB to

Your ANSYS Icepak Model of the User's Guide.

– Implemented user specified flow direction for resistances. See Adding a Res-

istance to Your ANSYS Icepak Model of the User's Guide.

– Implemented CAD shapes for sources. See CAD Objects of the User's Guide.

– Implemented temperature dependent piecewise linear power for 3D objects.

– Implemented transient variation for fixed temperature boundary condition

for block sides.

• Solving

– Implement non-uniform auto save solution intervals for transient simulations.

See User Inputs for Transient Simulations of the User's Guide.

– Implemented option to save .dat and .fdat files. See Using the Solve Panel

to Set the Solver Controls of the User's Guide.

– User definable setting for UDS (joule heating).

– Implemented solar load model for parallel processing.

• Postprocessing and reporting

– Implemented the option to display specific postprocessing levels and to orient

a legend vertically or horizontally. See Using the Context Menus in the

Graphics Display Window of the User's Guide.

– Implemented plotting of temperatures of internal nodes of network objects

and network blocks. See Network Temperature Plots of the User's Guide.

– Implemented the export of Heat Flux Vectors data into CFD-Post. See Results

Solution Control Options of the User's Guide.



New and Modified Features in ANSYS Icepak 14

– Implemented Thermal Cross and Thermal Chokepoint variables in CFD-Post.

• Miscellaneous

– Improved translation of CAD objects using the mouse.

– Implemented temperature dependent piecewise linear power for 3D objects.

– Implemented convergence setting for joule equation. See Judging Conver-

gence of the User's Guide.

– Implemented PNG image file format. PNG is the default file type for images.

See The File Menu of the User's Guide.

– Implemented the High Density Datacenter component macro. See Data

Center Components of the User's Guide.

– Implemented the LED Source macro to model temperature dependent power

of LEDs using forward current and forward voltage relationship. See The

Macros Menu of the User's Guide.

– Implemented the Arc Fin macro to create arc shaped heatsinks using poly-

gonal approximations.

– Implemented the Thermostat transient feedback (source/block) macro to

control the power of heat sources by monitoring temperatures.

– Implemented the Thermostat transient feedback (fan strength) macro to

control the rotational strength of fans by monitoring temperatures.

– Enhanced libraries of fans including new ADDA, Panasonic and Sunon fans.

– New blower library consisting of ADDA, Minebea and Sunon blowers.

– Implemented object alignment bubble help.


Chapter 10: Icepak

Chapter 11: CFD-Post

This chapter summarizes the new features and incompatibilities in CFD-Post Re-

lease 14.0.


Hub-to-Shroud Plots

• You can create hub-to-shroud plots based on two streamwise locations (or blade

aligned, or blade aligned linear). The plots will show a difference in the circum-

ferentially averaged variable between the two locations.

Vectors of Particle Variables on Particle Tracks

• You can plot vectors of particle variables on FLUENT particle tracks.

High-definition Movie Output

• You can create high-definition movies ("HD Video 720p" and "HD Video 1080p")

that play on all typical players.

Transient Blade Row Post-processing

• Solution variables are loaded and are available for plots.

• The file behaves like a transient case. Timestep switching, time charts, and anim-

ations are supported. In addition, uniform and custom timestep sampling is

supported.

FLUENT Internal Combustion (IC) Engine Cases

• IC engine cases with changing topology are now supported. Boundaries and

domains that are not available at the selected timestep are greyed out in the

Outline tree.

CGNS Files

• Face based boundary definition (in addition to nodal definition) is now supported.



• Files written with CGNS library version 3.0 or below are now supported.

Time Chart Performance

• The calculation of time charts has been sped up significantly, in cases where

unrelated objects (such as streamlines, planes, and so on) are present in the

state.

CFD-Post installation Size

• The disk size of the stand-alone CFD-Post installation has been significantly re-

duced.


This section describes the operational changes, the procedural changes (actions

that have to be done differently in this release to get an outcome available in

previous releases), and the support changes (functionality that is no longer

supported) in Release 14.0 of CFD-Post.

Operational Changes

In Release 13.0, forces at interfaces or cut planes were approximated by adding

pressure and mass flow force. However, this calculation will not balance the

forces at walls. Release 14.0 has a more accurate calculation of the approximate

force, which is derived by subtracting the mass flow force from the pressure

force at interfaces and cut planes.

In FLUENT there is an option to have additional post-processing variables written

to FLUENT DAT files. There is a change in behavior in the reading of variables

from FLUENT files. In Release 13, when selecting to output additional variables

in a DAT file in FLUENT (via the Data File Quantities panel), you had to choose

only the variables that were not automatically output to DAT file. Otherwise, the

chosen variable would show up in CFD-Post with a numerical suffix (for example,

you will see 'Velocity 1' in addition to 'Velocity'). As an alternative, you could use

the CDAT file format to specify exactly which variables to output to CFD-Post.

As of Release 14, when a variable is written to the user-specified section of a

DAT file, CFD-Post will check to see if the same variable is available in the basic

section of the DAT file. If so, the variable from the basic section will not be read

in CFD-Post, only the variables from the user-specified section of the DAT file

will be read.


Chapter 11: CFD-Post

Reading of 13.0 FLUENT cases that have multi-configuration information can fail

in CFD-Post 14.0. A workaround is to set the FLUENT_MULTICONFIG_OFF=1environment variable before running CFD-Post.

Procedural Changes

There are no procedural changes in this release.

Support Changes

There are no support changes in this release.



Incompatibilities

Chapter 12: AQWA

This release of the AQWA related products contains all capabilities from previous

releases plus many new features and enhancements. The following enhancements

are available in release 14.0. Please refer to the product specific documentation

for full details of the new features

12.1. ANSYS AQWA

The Following New Features Provide Extended Capabilities

in ANSYS AQWA:

• The non-linear axial stiffness definition of the dynamic cable has been extended

to the quasi-static elastic composite catenary cable. The non-linear axial stiffness

of each section of a quasi-static composite line can be defined in the same

manner as in the dynamic cable case.

• The second order force/moment calculation related to any specified wave spec-

trum can be optionally switched off by a new data record NODR in Data Cat-

egory13 (SPEC).

• Results from the hydrodynamic diffraction analysis can be generated in a text

file format to use for ocean wave loading in Mechanical APDL analyses. This can

be achieved by running the AQWA2NEUT program after the hydrodynamic dif-

fraction analysis.

• The AQWA Reference Manual is now accessible from the ANSYS Help Viewer.

• Gaussian wave spectrum is now available for the main spectrum in addition to

a cross-swell spectrum. Gaussian is available as a Wave Type for the Irregular

Wave object in a Hydrodynamic analysis in Workbench.

• Multiple directional spectra are now available in core AQWA-LIBRIUM and DRIFT,

and the Hydrodynamic Time Response system in Workbench (implemented as

the Irregular Wave Group). 2nd order interaction between different directions is

included in the core applications only. This effectively allows spreading in AQWA-

DRIFT.



• Linearized Morison drag on TUBE elements has been added to AQWA-LINE. When

AQWA-LINE stage 5 is run with a new LDRG option a set of modified RAOs is

calculated and written out to the .LIS and .PLT files. Linearized Tube Drag is also

available as an Analysis Settings option in the Workbench Hydrodynamic Diffrac-

tion system.

• Two new capabilities have been added to allow the distribution of bending

moment and shear force down a truss spar structure to be plotted in the AGS.

See the AGS Help (Start > All Programs > ANSYS 14.0 > Help > AQWA > AGS

Help 14.0) for more information.

• Wheeler stretching has been introduced for the calculation of wave pressure in

AQWA-NAUT (WHLS option).

Hydrodynamic Analysis System Enhancements

New Model Components have been added to the Hydrodynamic Analysis system:

• Fenders (under Connections)

• Joints (under Connections)

• Connection Points (under Parts), which allow Connection Points to be defined

on structures

Revised Model Components for the Hydrodynamic Analysis system:

• Fixed Points (under Geometry) have the same behavior as Connection Points

did in the previous release

Result Graphs have been enhanced.

• Linearized Tube Drag Forces, as an individual graph or included in the reporting

of total forces, are available for Hydrodynamic Diffraction Results

• Fender Forces and Joint Forces graphs are available for Hydrodynamic Time

Response Results


Chapter 12: AQWA

Chapter 13: ASAS

The following enhancements are available in release 14.0. Please refer to the

product specific documentation for full details of the new features.

13.1. ANSYS ASAS

The following new features are available in Release 14.0 of ANSYS ASAS:

ASAS has been removed from the main installation and will be provided as a

separate downloadable installation. BEAMCHECK and FATJACK products will be

installed by default with Mechanical products and SPLINTER is now delivered as

part of Mechanical APDL (although this continues to require an ASAS Offshore

license). SPLINTER documentation is now included as a part of the ANSYS

Mechanical APDL Advanced Analysis Guide.

SPLINTER has been enhanced to support code checking and additional analysis

options when used in conjunction with the Mechanical APDL application.

13.2. ANSYS BEAMCHECK

No new features for this release.

13.3. ANSYS FATJACK

The following new features are available in Release 14.0 of ANSYS FATJACK:

The FATJACK User Manual is now included in the ANSYS Help Viewer.

FATJACK can be used to read harmonic load cases when a harmonic analysis

has been performed in Mechanical applications.

13.4. FEMGV

No new features for this release.



Chapter 14: TGrid

14.1. Introduction

The TGrid 14.0 release includes material point based flow volume extraction and

other improvements to the CutCell technology, the Cut-tet meshing workflow,

improved prism meshing, enhancements to many existing features, and improved

robustness through defect fixes.

• The new features in TGrid 14.0 are listed in New Features in TGrid 14.0 (p. 153).

• Information about all the features is provided in the TGrid 14.0 User's Guide.

14.2. New Features in TGrid 14.0

CutCell Meshing

The following CutCell enhancements have been made in TGrid 14.0:

• General improvements have been made in the areas of feature capturing,

cell sorting and quality.

• Fluid and Dead CutCell zones can be automatically separated using material

points. The main advantage is the ability to extract flow volumes from sur-

rounding solid CutCell objects and capping faces.

• Material points can be created, listed, and deleted.

• After material point based separation, the remaining dead and solid cell

zones can be automatically deleted.

• Overlapping boundaries between CutCell objects are properly resolved into

a single interior zone and renamed based on object priority.

• Sharp trailing edges and thin regions can be resolved using two separate

commands for faces and edges.

Prism Meshing

The following prism meshing enhancements have been made in TGrid 14.0:

• Special corner treatment has been added to improve CutCell prism quality.



• Speedup of the prism generation up to a factor of two depending on the

number of layers created.

• Improved quality and stability of mesh morphing as part of Cutcell prism

generation.

Cut-Tet Meshing Workflow

The Cut-Tet workflow is a new approach to create a tetrahedral, hexcore, or prism

mesh based on a triangulated and improved CutCell surface mesh.

Miscellaneous Enhancements

The following miscellaneous enhancements have been made in TGrid 14.0:

• Edge operations:

– An improved algorithm for creating the intersection edge results in a

speedup by a factor of 2 or more.

– The ability to delete small edges has been added.

• Tetrahedral Meshing Enhancements:

– Tetrahedral meshing robustness has been improved.

14.3. Supported Platforms for TGrid 14.0

Platform/OS levels that are supported for the current release are posted on the

ANSYS website.


Chapter 14:TGrid

http://www.ansys.com/services/ss-platform-support.asp

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