System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface...

33
System Coupling 14.0 – Two- way FSI with ANSYS FLUENT and ANSYS Mechanical © 2011 ANSYS, Inc. May 15, 2012 1 ANSYS Regional Conference

Transcript of System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface...

Page 1: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

System Coupling 14.0 – Two-way FSI with ANSYS FLUENT and ANSYS Mechanical

© 2011 ANSYS, Inc. May 15, 20121

ANSYS Regional Conference

Page 2: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Fluid-Structure Interaction Applications

Floating thin film

© 2011 ANSYS, Inc. May 15, 20122

Fluid-structure interaction problems encompass a wide range of

applications in many different industries.

Aerospace, automotive, power generation, biomedical, etc.

Mitral valveWind Turbine

Page 3: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• The solution to two-way fluid-structure interaction

requires co-simulation between computational fluid

dynamics and structural mechanics.

• Applications such as air foil flutter, flow induced

vibration from wind loading, membrane valves, pumps,

elastic artery modeling and fuel tank sloshing require a

Fluid-Structure Interaction

© 2011 ANSYS, Inc. May 15, 20123

elastic artery modeling and fuel tank sloshing require a

two-way fluid-structure interaction solution to

accurately predict the behavior of the design.

Page 4: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Facilitates simulations that require tightly integrated

couplings of analysis systems in the ANSYS portfolio

• Extensible architecture for range of coupling scenarios

(one-, two- & n-way, static data, co-simulation…)

• ANSYS Workbench user environment and workflow

• Standard execution management and data interfaces

System Coupling 14.0

© 2011 ANSYS, Inc. May 15, 20124

• Standard execution management and data interfaces

Page 5: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Two-way surface force/displacement coupling with

ANSYS Fluent and ANSYS Mechanical

– Steady/static and transient two-way FSI

• Workbench based setup and execution

– Windows and Linux

System Coupling 14.0 – A Broad Range of Features

© 2011 ANSYS, Inc. May 15, 20125

• Execution from command line outside of Workbench

including cross-platform execution

• Integrated post-processing with ANSYS CFD-Post

• Parallel processing for both CFD and structural

solutions with ANSYS HPC

– RSM currently not supported

• Restarts for fluid-structure interaction

• Parameterization, design exploration and optimization

Page 6: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

System Coupling Schematic Setup

© 2011 ANSYS, Inc. May 15, 20126

Page 7: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Solution update can ONLY be done via System Coupling

• System Coupling ensures that the time duration and

time step settings are consistent across all participant

solvers

System Coupling Controls the Participant Solvers for Transient and Steady/Static Solutions

© 2011 ANSYS, Inc. May 15, 20127

Page 8: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Two-way FSI setup: important steps

© 2011 ANSYS, Inc. May 15, 20128

Pressure = 100 pa

for 0.5 sec

Total time duration = 10 sec

Page 9: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Setup Transient Structural Model

© 2011 ANSYS, Inc. May 15, 20129

Setup transient structural

solution, structural

boundary conditions and

Fluid Solid Interface

Page 10: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Setup Fluid Flow (FLUENT) Model

© 2011 ANSYS, Inc. May 15, 201210

Setup transient fluid solution, fluid

boundary conditions and specify

System Coupling Dynamic Mesh

Zone for fluid-structure interaction

motion

Page 11: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• System Coupling motion

identifies zones that may

participate in System Coupling

• Allows user-defined motion to be

combined with System Coupling

motion

System Coupling Motion Type

© 2011 ANSYS, Inc. May 15, 201211

motion

• Defaults to stationary motion

type when not connected to

System Coupling

Page 12: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• State of System Coupling setup cell will be

– Upstream data is now available for SC Setup

Update Setup Cells for Transient Structural and Fluid Flow (FLUENT)

© 2011 ANSYS, Inc. May 15, 201212

Page 13: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

System Coupling Setup GUI

Chart

MonitorsOutline

© 2011 ANSYS, Inc. May 15, 201213

Solution Information

Text MonitorsDetails

Page 14: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Coupling End Time

• Coupling Step Size

• Minimum Number of Iterations

per Coupling Step

• Maximum Number of Iterations

per Coupling Step

System Coupling Analysis Settings

© 2011 ANSYS, Inc. May 15, 201214

per Coupling Step

Page 15: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Region and variable information

is generated automatically via

Update when analysis systems

are first connected to System

Coupling

• For FLUENT, all regions of type

System Coupling Participants are Transient Structural and Fluid Flow (FLUENT)

© 2011 ANSYS, Inc. May 15, 201215

• For FLUENT, all regions of type

Wall are shown in SC Setup

• For Mechanical, all regions of

type Fluid Solid Interface are

shown in SC Setup

Page 16: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Use Ctrl key to select a FLUENT

and Mechanical region pair and

select Create Data Transfer from

right-click pop-up menu

• Automatically fills in the details

for the data transfer region

Recommended Way to Create Data Transfer Regions

© 2011 ANSYS, Inc. May 15, 201216

for the data transfer region

• Data transfers can be one-way

(i.e. only transfer force or only

transfer displacement) or two-

way

Page 17: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Create Data Transfers

© 2011 ANSYS, Inc. May 15, 201217

Page 18: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Participant

• Region

• Variable

• Transfer At

– Start of Iteration only

Data Transfer Defines the Details for the Source, Target and Data Transfer Controls

© 2011 ANSYS, Inc. May 15, 201218

– Start of Iteration only

• Under Relaxation Factor

• Convergence Target

Page 19: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Co-Simulation Sequence

– Transient or Static Structural will

always be first in the co-simulation

sequence

• Debug Output

– Different levels of debug output for

Execution Control

© 2011 ANSYS, Inc. May 15, 201219

– Different levels of debug output for

analysis and data transfers

• Intermediate Results File Output

– Controls the intervals for writing

restart file information

Page 20: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Executing System Coupling

© 2011 ANSYS, Inc. May 15, 201220

Page 21: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• From schematic select Update using right-click menu

on System Coupling solution cell

• Solution progress (% complete) can be monitored using

View Progress menu

Alternative Method for Executing System Coupling

© 2011 ANSYS, Inc. May 15, 201221

Page 22: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Build information

• Complete summary of coupling

service input file

• Analysis details

• Participant summaries

• Data transfer details

Solution Information

© 2011 ANSYS, Inc. May 15, 201222

• Data transfer details

• Mapping diagnostics

• Time step and iteration summary

• Solver field equation

convergence summary

• Data transfer convergence

summary

• FLUENT/MAPDL solver output

Page 23: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Chart Monitors

© 2011 ANSYS, Inc. May 15, 201223

Default chart monitors

show convergence

history for all data

transfers.

X-axis can be

coupling time,

step or

iteration.

Page 24: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Add charts by selecting Create Convergence Chart

• Variables can be added or removed from charts

– Data transfers, CFD and structural convergence

norms

• Chart properties are editable in same manner as other

charts within ANSYS Workbench

Adding Charts and Variables

© 2011 ANSYS, Inc. May 15, 201224

charts within ANSYS Workbench

Page 25: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Transient Structural or Fluid Flow (FLUENT) Results cell

for solver-specific post-processing

• Add a Results System (ANSYS CFD-Post) for unified

post-processing of structural and fluid results

Post Processing System Coupling

© 2011 ANSYS, Inc. May 15, 201225

Page 26: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

• Oscillating Plate Verification

– Excellent correlation between

System Coupling, published

data and MFX solver

Post Processing System Coupling

© 2011 ANSYS, Inc. May 15, 201226

Page 27: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

System Coupling – Examples

© 2011 ANSYS, Inc. May 15, 201227

Page 28: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Fuel Tank Sloshing

Transient free

surface flow in

a fuel tank

with internal

baffles.

© 2011 ANSYS, Inc. May 15, 201228

Page 29: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Mitral Valve

Transient blood

flow through a

three leaf mitral

valve, non-

Newtonian fluid

and anisotropic

hyperelastic

tissue. Solution

© 2011 ANSYS, Inc. May 15, 201229

tissue. Solution

includes re-

meshing of the

fluid domain and

nonlinear

contact.

Page 30: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Reed Valve

Transient

response of

reed valve

opening and

closing.

Solution

includes re-

© 2011 ANSYS, Inc. May 15, 201230

includes re-

meshing of the

fluid domain,

large

deformations

and nonlinear

contact.

Page 31: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Vibrating Rod

Transient

response of

vibrating rod

including

vortex

shedding.

© 2011 ANSYS, Inc. May 15, 201231

Page 32: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Deformation of a Leakage Path

Steady state

solution for a

narrow

representative

leakage path in a

fuel injector

assembly

clearance gap.

© 2011 ANSYS, Inc. May 15, 201232

clearance gap.

Page 33: System Coupling 14.0 - Two-way FSI with ANSYS Fluent and ... · PDF file•Two-way surface force/displacement coupling with ANSYS Fluent and ANSYS Mechanical – Steady/static and

Questions and Answers

© 2011 ANSYS, Inc. May 15, 201233