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Innovation Intelligence ® CFD and more with Acusolve and HyperWorks Dr. Marc Ratzel, Program Manager CFD David Corson, Program Manager AcuSolve

CFD and more with Acusolve and HyperWorks

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Page 1: CFD and more with Acusolve and HyperWorks

Innovation Intelligence®

CFD and more with Acusolve and HyperWorks

Dr. Marc Ratzel, Program Manager CFD David Corson, Program Manager AcuSolve

Page 2: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Agenda

•  Overview, CFD solutions in HyperWorks •  Pre-processors / Solvers / Post-processors included in the HW suite

•  HyperMesh/HyperView for CFD applications •  Grid generation in HyperMesh

•  Basic AcuSolve case setup in HM •  Post-processing in HyperView

•  Outlook to next update release SA-130

•  Multi physics in AcuSolve •  Overview of Multi physics capabilities •  AcuSolve-Radioss coupling •  Advanced model setup using AcuConsole

•  Efficient CFD analysis of a race car using Altair tools •  HyperMesh, AcuConsole / AcuSolve / AcuFieldView

Page 3: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

CFD solutions in HyperWorks

AcuConsole

HyperMesh

AcuSolve

Radioss (linear, static)

Radioss (non-linear, implicit, dynamic)

Radioss (CFD, FSI)

HyperView

AcuFieldView

Pre-processor Solver Post-processor

P-FSI (eigenmodes)

DC-FSI (co-simulation)

Loads (T,p,…)

Page 4: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Pre-Processing

•  AcuConsole •  Dedicated pre-processor for AcuSolve •  Fast and robust CFD meshing (e.g. 90Mio tetras external automotive 80min)

•  HyperMesh •  Solver neutral CFD grid generator •  Powerful geometry cleanup/generation tools •  One pre-processor for structural and CFD analysis

AcuConsole HyperMesh

Page 5: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Solver

•  Radioss CFD/FSI •  Explicit multi-physics solver •  Coupled solver (structure + fluid) •  Suited for compressible flow

•  AcuSolve •  Implicit multi-purpose CFD solver •  Finite element based •  Strong FSI capabilities (P-FSI, DC-FSI)

Courtesy of HTT

AcuSolve Radioss

Page 6: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Post-Processing

•  AcuFieldView •  Dedicated CFD post-processor (OEM version of FieldView, Intelligent Light) •  Supports only AcuSolve results •  Client-server architecture, 8 way parallel

•  HyperView •  Solver neutral CFD post-processor •  Showing structural and CFD results

in one framework

HyperView

AcuFieldView

eigenmodes

pressure Top. Optim. streamlines

Page 7: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Agenda

1.  Access to CFD meshing tools in HyperMesh •  CFD user profile in HyperMesh •  CFD tetramesh panel

2.  Demos •  Basic meshing of an exhaust system •  Considering variable boundary layer thickness •  Improving mesh quality •  Mixed tetra-hexa meshing

3.  Upcoming release SA-130, new meshing features

4.  Basic AcuSolve case setup in HyperMesh

5.  Post-processing of CFD results in HyperView

Page 8: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

CFD user profile

•  New GUI design for CFD applications •  Quick access to CFD features •  Aligned to CFD workflow

Page 9: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

CFD tetra mesh panel (access)

Drop down

Panel

Toolbar

Page 10: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

CFD tetra mesh (four sub panels)

Boundary selection •  select boundaries •  define regions with BL

Boundary Layer settings •  1st cell height •  # of layers

Tetramesh settings •  growth rate •  elem. criteria threshold

Refinement box •  local tetra refinement •  adapt size/location

Page 11: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Demo (variable BL thickness / mixed hexa-tetra mesh)

HyperWorks Desktop: one framework for pre + post

Page 12: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

New CFD features, next release (SA-130)

•  Surface remeshing if included in refinement box

Remeshed surface with BL

BL surface elements included Refinement box (tetra

mesh refinement)

Page 13: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Demo (refinement box, surface remeshing)

Page 14: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

New CFD features, next release (SA-130)

•  Define solid and fluid volume (e.g. electronic cooling)

Solid (no BL) Fluid (with BL)

Separate components for each volume

BL only in fluid domain

Page 15: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

New CFD features, next release (SA-130)

•  Simple boundary selection option •  Reduces the boundary selection to a minimum

Simple selection

Select all bounding regions

Select inflow/outflow

No BL on interfaces

Page 16: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Demo (simple selection, fluid/solid)

Page 17: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Basic AcuSolve case setup in HyperMesh

•  Currently only basic setup features are supported in HyperMesh •  Further development planned for future

Physics/numerics

Comps, BC

Materials

Page 18: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Demo (AcuSolve setup in HyperMesh / HyperView for CFD)

Page 19: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

AcuSolve case setup in HyperMesh

Property sheet Inflow BC Property sheet Material def.

Page 20: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

AcuSolve case setup in HyperMesh

AcuSolve Job Launcher AcuProbe

Page 21: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Alternative: HyperMesh à AcuConsole

•  Launch AcuConsole from HyperMesh and transfer model •  Perform case setup in AcuConsole

HyperMesh

AcuConsole

Page 22: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Demo (Morphing, new run)

Page 23: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

HyperStudy / Morphing for CFD optimization

Challenges: •  Increase manifold efficiency

Solution: •  Create shape variables using HyperMorph •  Run optimization to maximize flow uniformity

while meeting the constraints on back pressure

Results : •  7% increase in flow uniformity •  2 days for design optimization

inflow

outflow

Cross section for uniformity

initial design optimized design Velocity contour Velocity contour

Presented at EHTC 2009 by Bosal

Page 24: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Summary

CFD meshing (HyperMesh) •  Wide range of geometry cleanup/generation functionalities •  Solver neutral (AcuSolve, CFD++, CFX,…) •  High quality volume grids (hybrid, hex-core, hex-only,..)

Next release SA 130 •  Various new CFD meshing features

Morphing for CFD •  Quick design changes without re-meshing

CFD post-processing (HyperView) •  Data exchange via Ensight format •  Streamlines, contour plotting, iso-surfaces,…

AcuSolve •  Basic AcuSolve case setup in HyperMesh

Page 25: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Agenda

•  Overview, CFD solutions in HyperWorks •  Pre-processors / Solvers / Post-processors included in the HW suite

•  HyperMesh/HyperView for CFD applications •  Grid generation in HyperMesh

•  Basic AcuSolve case setup in HM •  Post-processing in HyperView

•  Outlook to next update release SA-130

•  Multi physics in AcuSolve •  Overview of Multi physics capabilities •  AcuSolve-Radioss coupling •  Advanced model setup using AcuConsole

•  Efficient CFD analysis of a race car using Altair tools •  HyperMesh, AcuConsole / AcuSolve / AcuFieldView

Page 26: CFD and more with Acusolve and HyperWorks

Innovation Intelligence®

Altair Engineering, Inc. June 6, 2012

HyperMesh/AcuConsole/AcuFieldView Race Car Model

Page 27: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Race Car – Overview

•  What you will learn •  How to use HyperMesh and AcuConsole together for model set-

up

•  Surface meshing in HyperMesh

•  Volume meshing in AcuConsole

•  AcuFieldView post-processing •  Basic operation

•  Automation using restart files

•  Client-server operation

•  Client-server parallel operation

Page 28: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

AcuFieldView Overview •  OEM version of FieldView based on FV 13 •  Included with AcuSolve V1.8b product

suite •  Functions only with AcuSolve generated

results data

Many New Features •  Redesigned, unified Graphical User

Interface •  Sweep caching of transient data •  Improved graphics performance •  New file browsers which recall previous

locations

Race Car – AcuFieldView

Page 29: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

AcuSolve Database

FV-UNS format

Direct read

Data Access •  Direct database read •  Conversion to FV-UNS format •  Local client/local server •  Local client/remote server •  Up to 8 processor parallel

operation

Fully featured •  Supports all features of

FieldView •  No model size limits •  No limits on visualization

object count

Customize/Automate •  Full support of FVX

scripting/automation •  Runs in true batch mode •  Integrated with AcuReport

Race Car – AcuFieldView

Page 30: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

Race Car – Finished Product

Page 31: CFD and more with Acusolve and HyperWorks

Innovation Intelligence®

Altair Engineering, Inc. June 6, 2012

AcuSolve Fluid/Structure Interaction Demo – Yield Sign Flutter

Page 32: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

FSI Demo - Overview

•  What you will learn •  Multiphysics capabilities of AcuSolve

•  P-FSI vs. DC-FSI

•  AcuSolve modeling process

•  Interoperability of AcuSolve with RADIOSS

•  Basic CAD associativity within AcuConsole •  How to set up multiphysics simulations using AcuConsole

Page 33: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

FSI Demo – Supported Physics

•  Multiphysics •  Rigid Body Dynamics Coupling

•  6-DOF rigid body solver •  No multi body dynamics

•  Practical Fluid/Structure Interaction (P-FSI) •  Structural displacement computed by AcuSolve

•  Based on modal superposition •  Limited to linear structural displacements •  Supported with RADIOSS, Abaqus, Nastran

•  Directly Coupled Fluid/Structure Interaction (DC-FSI) •  Codes communicate at run time

•  Loads/displacements exchanged •  Supported with RADIOSS, Abaqus, MD-Nastran

Page 34: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

FSI Demo – Problem Description

•  Road sign flutter under high wind •  Geometry constructed in SolidWorks •  Structural model(s) built using HyperMesh •  CFD model built using AcuConsole •  Practical Fluid/Structure Interaction (P-FSI) and Directly Coupled Fluid/

Structure Interaction (DC-FSI) technology used

Page 35: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

FSI Demo – Results

•  Displacement from P-FSI case

Page 36: CFD and more with Acusolve and HyperWorks

Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.

FSI Demo - Results

•  Finished product