ANSYS Simulation Technology for the Nuclear Industry UK... · ANSYS Simulation Technology for the...

ANSYS Simulation ANSYS Simulation Technology for the Technology for the Nuclear IndustryNuclear Industry

ANSYS Simulation ANSYS Simulation Technology for the Technology for the Nuclear IndustryNuclear Industry

Phil StopfordPhil StopfordPhil StopfordPhil Stopford

© 2011 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary© 2011 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary

De Vere Milton Hill House

6th April 2011

Phil StopfordPhil Stopford

ANSYS UKANSYS UK

Phil StopfordPhil Stopford

ANSYS UKANSYS UK

Range of Technologies

ANSYS Software provides a comprehensive range of

simulation technologies:

• Computational Fluid Dynamics (CFD)

© 2011 ANSYS, Inc. All rights reserved. 2 ANSYS, Inc. Proprietary

• Finite Element Analysis (FEA)

– Implicit (low speed)

– Explicit (high speed impact/blast)

• Electromagnetics

– Low frequency (Motors / Transformers)

– High frequency (Microwave / Signal Integrity)

Modelling Approach

Control

Volume

• CFD and FEA models offer reliable, validated

techniques for simulating how fluids and

structures behave

• The underlying technology is very similar:

• A ‘CAD’ model of the part is made,


• This is decomposed into a large number of

component grid ‘cells’, or ‘elements’

• The governing equations of fluid or structural mechanics are then solved at each of these grid

locations (usually in an iterative manner).

• Combined, this provides a detailed 3D picture

of how the part responds to the loads / flow

conditions involved

Finite

Element

Flu

ids

Str

uctu

ral

• Advanced Capabilities

– Nonlinear materials

– Large deformation

– 3D frictional contact

– Structural dynamics

– Explicit dynamics

Structural


Mesh

ing

Em

ag

Th

erm

al – Explicit dynamics

– Large overall motion

• High Performance Computing

– Parallel processing

– Highly scalable

• Customizable

– User elements & materials

– Scripting

Fluids


–Multiphase

–Multispecies flows

– Reacting flows

–Multiple reference frames

– Latest turbulence models

Flu

ids

Str

uctu

ral


– Latest turbulence models

• High Performance Computing

– Large models: >1 billion

– Large clusters: >1024 cores

• Integrated

– Unified meshing

– CFX & Fluent solvers

– Unified post-processing

Mesh

ing

Em

ag

Th

erm

al

Thermal


– Radiation

– Phase change

– Mass transport

– Steady-state

– Transient

Flu

ids

Str

uctu

ral


– Transient

– Conduction

– Convection

– Far field decay

– Time dependent boundary

conditions

• Advanced Materials

– Temperature dependent

Mesh

ing

Em

ag

Th

erm

al

Electromagnetics

• High Frequency

– Full wave solution

– S-parameters

– Radiated field outputs

• Low Frequency

– Magnetostatic

Flu

ids

Str

uctu

ral


– Magnetostatic

– Transient

– Eddy current

• Advanced Materials

– Nonlinear

– Isotropic & anisotropic

– Frequency dependent

• Automated Pre & Post-Processing

– Adaptive meshingMesh

ing

Em

ag

Th

erm

al

Meshing

• CAD Associativity

– Bi-directional

– Persistent

– Parametric

• Flexible

Flu

ids

Str

uctu

ral


• Flexible

– Geometry clean up

– Multiple mesh methods

– Advanced mesh controls

• Highly Automated

– Automatic contact

– Apply loads to features

– Physics aware

Courtesy of

Ford Motor Company

Mesh

ing

Em

ag

Th

erm

al

In-Depth Technology

Spanning Multiple Domains

Conduction

Thermal

Compressible

FluidsTe

ch

nic

al D

ep

th

Technical Breadth

Quasi static (Low Freq)

ElectromagneticsStructural

Large Displacements

Tet/Prism

Hex/Hex Core

Structured

Unstructured

Multi-zone

Body-fitted Cartesian

Patch Independent

More3

Meshing


Convection

Radiation

Phase Change

Mass Transport

More3

Incompressible

Laminar Flow

Turbulence

Multiphase Flow

Non-Newtonian Fluids

More3

Te

ch

nic

al D

ep

th

Steady-State, Transient, Harmonic & Modal

Linear & Nonlinear

Full Wave (High Freq)

Eddy current

Transient with motion

Circuit Coupling

More3

Finite Strain

Contact

Multibody Dynamics

Random Vibration

Implicit & Explicit

More3

End-To-End Solutions

In a Unified Environment


Scalable Performance

Desktop to Cluster

Moderately Complex

Geometry

Moderately Complex

Assemblies

Multiple Physics


Desktop

Work

Station

Cluster

Assemblies

Complex Geometry

Large Assemblies

DOELong Transient

Analyses

Problem Size/Solution Speed

Underlying Technology : CFD

ANSYS has 2 CFD codes in its portfolio, ‘CFX’ and ‘FLUENT’




These codes enable the simulation of flows that are:• Single-Phase


Steam Generator




• Multiple Species Hydrogen Build up in a

vault store with only

passive ventilation


passive ventilation




• Multiple Species

• Multiphase


Slug Flow in a Reactor





• Multiphase

• Turbulent Flows

movable diaphragm


• Turbulent Flows





• Multiphase

• Turbulent Flows


• Turbulent Flows

• Particle-laden flows

Droplet Flow in a

Scrubber





• Multiphase

• Turbulent Flows

Heat Transfer in a

Manifold


• Turbulent Flows


Heat transfer can be included from:• Thermal Conduction in a solid





• Multiphase

• Turbulent Flows


• Turbulent Flows



• Thermal Radiation

Thermal Radiation in an

Automotive Headlight





• Multiphase

• Turbulent Flows


• Turbulent Flows



• Thermal Radiation

• Internal Heat Generation

Temperatures in a Fuel

Transport Cask

Underlying Technology : FEA

ANSYS has 4 codes that include FEA technology in its portfolio:

‘ANSYS Mechanical’ , ‘ANSYS AUTODYN’,

‘ANSYS Explicit STR’ ‘ANSYS LS-DYNA’






These codes enable the simulation of structures with:• Beam Elements






These codes enable the simulation of structures with:• Beam-Elements

• Full 3D Stress Analysis



Stress distribution in a valve, during a transient analysis of a shutdown event

Courtesy Structural Integrity Associates









• Multibody Dynamics










• Multiphysics

Image courtesy of CADFEM GmbH /

Elektromoterenwerk Grunhain GmbH & Co KG










• Multiphysics

• Seismic Analysis

(inc new ‘Supernode Solver’)

Impeller four-nodal diameter

mode associated with its first

natural frequency; this value,

141 Hz, is close to other

vibrational frequencies of the

global system.

Courtesy Riello SPA










• Multiphysics


• Composites

A liquid-hauling tank and associated

structures of the truck were analysed.

The truck's tank was made of filament-

wound composites and sandwich

structures.

Courtesy Componeering Inc.










• Multiphysics


• Composites

• High Speed Impact

Inter-Connectivity of these Codes

The ANSYS products are integrated into ANSYS Workbench, and are readily

able to pass data (geometry / mesh / results) between the different products.


Verification

• ANSYS software uses a large

suite of regression test cases

in a automated procedure run

daily to check the latest code

builds


• ANSYS also performs an

extensive test programme

before releasing a new version

• ANSYS participates in the

writing of Best Practice

Guidelines for the Nuclear

Industry

Validation

• Simulation of turbulent

multiphase flow with phase

transformation is prone to

modelling errors

• Validation for realistic

conditions is essential


conditions is essential

• ANSYS software validated

over many years against data

from large experimental

facilities that simulate reactor

flows

• New models included as they

demonstrate better agreement

with data

Summary

• ANSYS Technology is well established and trusted for

use in the Nuclear Industry.

• ANSYS tools offer both an unequalled breadth of

application areas (Fluid Dynamics, FEA3)


application areas (Fluid Dynamics, FEA3)

• And an unparalled depth, enabling the most complex of

underlying physics to be incorporated

• These tools are all integrated in the Workbench

environment

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