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ANSA and ETA v14.0 powerful pre- and post-processing for advanced CFD simulations January 2013 1
ANSA and ETA v14.0 powerful
pre- and post-processing for advanced CFD simulations
January 2013
BETA CAE Systems S.A.
Kato Scholari, Thessaloniki,
GR- 57500 Epanomi, Greece
Tel :+30-392-021420Fax :+30-392-021417
Email : ansa@beta-cae.gr
URL : http://www.beta-cae.gr
geometry
mesh
morph
results
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ANSA pre-processor specifications
Supported platforms:
- Linux
- Windows XP / Vista / 7
- MacOS
By permission of
Wirth Research Ltd
32 & 64 bit code for unlimited memory usage
Double precisionfor high accuracy
Parallel processing on multi core hardware for maximum speed
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ANSA and ETA v14.0 powerful pre- and post-processing for advanced CFD simulations January 2013 3
Easy model visualization and manipulation using focusing and cutting plane functions
Powerful handling of large CFD models
High Lift Prediction Workshop model
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By permission of Wirth Research Ltd
Input/Output
Native CAD formats:
CATIA V4 & V5
Unigraphics NX
Pro/ENGINEERJT
SolidWorks
Inventor
Parasolid
Neutral CAD formats:
IGES
VDA-FS
STEP
CFD formats:
Fluent
Star-CD and CCM+
OpenFOAMCFD++
CFX5
CGNS
SC/Tetra
UH-3D
Other mesh formats
PATRAN
STL
VRML
and more..
Direct Interfaces with other CAE codesRADTHERM
NASTRAN
ABAQUS
ANSYS
LS-DYNA
PAMCRASH
and more..
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Geometry handling
CAD feel, easy-to-use functions for creation and manipulation of geometrical entities (points,
curves, surfaces)
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Geometry handling: Advanced automatic and manual clean up tools
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Geometry handling: De-featuring and watertight model preparation
Raw CAD data De-featured and
watertight model
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Geometry handling: identification and isolation tools for:
Intersections Contacts/Proximities
Inner passagesOuter skin Baffles
Emboss logos
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Powerful tools for management and connection of CAD geometry and existing FE-mesh
Combining geometry and FE-model mesh
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Intersecting geometry and FE-model mesh (mesh not associated with geometry)
Boolean operations between combinations of geometry and FE-model mesh
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Speed-up model preparation using automatic identification of similar geometry & replacement with
linked geometry
Geometry handling: Linked geometry
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Multiple algorithms for tria, quad or mixed-type shell mesh
Surface meshing
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Automatic Macro Area merging for high quality surface mesh
Surface meshing
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Fully automatic Curvature Dependant surface meshing
with user controlled growth rate, min & max
element size and mesh feature angle
By permission of
Chalmers Technical
University
Surface meshing for CFD
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Size Boxes of arbitrary shape for local surface mesh control
Surface meshing: Size Boxes
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Combined CFD and anisotropic meshing for aerospace applications
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Surface meshing: STL algorithm
For solvers that do not require volume mesh
as input, like Powerflow
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Surface meshing proximity detection
Proximity detection in shell mesh and auto-refinement
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Reconstruction of existing FE-model mesh for element type modification, quality
improvement, refinement, or coarsening
Surface meshing - Reconstruction
Automaticfeature line detection
Remeshing specified
element type
Refining Coarsening
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Reconstruction of bad quality STL mesh respecting local size and curvature
Surface meshing - Reconstruction
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Automatic detection and gap closure
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Variable length Wrapping, capturing local curvature and model feature lines
Surface Wrapping
Imported STL
or uncleangeometry
wrapping
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Variable length Wrapping, capturing local curvature, model feature lines
with proximity refinement and contact prevention
Input STL dataTreatment (hole and gap closure)
Surface Wrapping
Surface Wrapping
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Surface Wrapping: proximity refinement options
Different part proximity
Same part proximityOriginal STL
Without self-proximity With self-proximity
Ability to specify proximity refinement settings to avoid fused areas between different
or same parts
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Surface Wrapping: leak detection tools
Identification of multiple leak paths for multiple user specified source points
Leak 1
Leak 2
Leak 3
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Mesh integrity checks (locate unmeshed areas, free edges, proximities and penetration
areas, duplicate elements etc.)
Comprehensive mesh information and quality statistics
Quality check according to
multiple criteria (skewness, angle
squish, length, aspect, warp, etc)
and solvers (Fluent, Star, OpenFOAM etc)
Clear identification of poor-quality elements
Surface meshing - Checks
Automatic and manual functions
for mesh quality improvement
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Double parallel model management tools: Properties (corresponding to CFD model zones)
and Parts (assembly hierarchy extracted from CAD data)
CFD model management
Properties
Parts
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Functionality to compare current model with updates in other ANSA files, identify
differences in geometry, or other attributes, and automatically update the current model
with the necessary differences only
CFD model management
Current model
Updated version of the model in
different file overlaid for
comparison
Current model with replaced areas
automatically identified from
updated model
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Fully automatic volume and sub volume detection applicable to the most complex problems
By permission of
FORD WERKE GmbH
Volume meshing
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By permission of Volkswagen AG
Fast and robust volume meshing for all types of elements
(tetra, pyramid, prism, hexa and polyhedron)
Volume meshing
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Volume meshing: Definition of multiple fluid and solid zones
Non-conformal mesh
for moving mesh analysis
Conformal mesh for MRF and porous zones and for conjugate heat transfer analyses
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Courtesy of Actiflow BV
Volume meshing: Solar car and urban enviroment CFD simulations
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Volume meshing: EV-55 outback CFD study
Courtesy of Evektor
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Fully-conformal variable size Hexa-Interior mesh with prism and pyramid transitions
Hexa Interior algorithm
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Polyhedral type volume meshing algorithm
Variable size hexa mesh with polyhedral elements for transitions
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Size Boxes controlling max element size
Volume meshing: Size Boxes
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Trim hexa/polyhedral mesher
Fully automated, highly controllable, trim hexa and polyhedral mesh generation without the need
for watertight volume definitions, running on multi core machines
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Multiple options:
Auto exclude or
collapse areas
Controlled
Layer Squeezing to
avoid intersections
Layers from selectedareas with different
settings
Layers from
zero-thickness walls
Volume meshing: Boundary layers generation
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Boundary layers exclude mode
Automatic fix of intersection and proximities in any of three options
Squeeze option Collapse option Exclude option
Collapse free edges
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X number of inner layers in
absolute mode
Y number of additional outer
layers in aspect mode
Ability to create an X number of layers in absolute height mode and then switch to aspect mode
for the outer additional layers, thus ensuring a good cell volume change between the layers and
the tetra mesh
Flexible specification of layer growth
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Conversion of hybrid to polyhedral meshes
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Volume meshing: Hexa/Penta map meshing
By permission of
City University racing team
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Hexa meshing based on block structures associated to the model
HexaBlock meshing
Global box Box splitting Deletion of unneeded
boxes
Snapping of points Snapping of edges Hexa mesh with
O-GRID patterns
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Numerical simulation of flow through S-duct - 1st Propulsion Aerodynamics Workshop July 2012
HexaBlock meshing
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Hexa meshing based on block structured boxes
HexaBlock meshing
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Batch Mesh tool for complete CFD meshing automation
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Automated mesh refinement study - 1st High Lift Prediction Workshop
Coarse
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Medium
Automated mesh refinement study - 1st High Lift Prediction Workshop
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Fine
Automated mesh refinement study - 1st High Lift Prediction Workshop
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Output also in CGNS, CFX5 and SC/TETRA
Boundary Condition type specification for various CFD solvers
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Full support of OpenFOAM mesh and case setup
Boundary conditions, porous and MRF zones, turbulence models, controlDict support, integrated
checkMesh and more
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Direct I/O of native *.tdf files (Radtherm) and *.tfe files (Theseus-FE)
Support of shell and solid mesh, Parts (single and multilayer)
and Assemblies, Materials, Boundary conditions
and main solver settings
Thermal Management simulations support for RadTherm and Theseus-FE
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ANSA M hi
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ANSA Morphing
ANSA morphing tool has the following advantages:
- It provides flexible parameterization of your CFD model
- It is highly controllable allowing the user to perform the exact modifications that are required
- It allows scaling and history tracking of morphing actions
- It is applicable to surface & volume mesh and geometry
- It employs fast morphing algorithms that can be used efficiently and robustly on large CFD models
- It is integrated in the same environment so that it can be used in conjunction with the powerful
ANSA functionality for geometry handling and surface and volume meshing
- Morphing can be performed interactively or in pure batch mode, also coupled with optimizer
software
- It can be used with direct interfaces with all major CFD codes, like Fluent, Star CCM+, and
OpenFOAM among others
M hi
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Morphing of shell and volume mesh by user-interaction, or in batch mode accelerates engineering
development
Morphing
M h R t ti ft l d f ti
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Mesh Reconstruction after large deformations
Original mesh After morph
Skewed solids Reconstruction
M hi R i d h
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Morphing Rear windscreen morph
By permission of Volkswagen AG
Morphing External Aero
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Morphing External Aero
Morphing rudder angle change
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Morphing rudder angle change
Morphing External Aero changing the gap of trains
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Morphing External Aero changing the gap of trains
Morphing Scaling deformations
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Morphing Scaling deformations
Adjoint solver sensitivity based optimization
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Sensitivity Based optimization with ANSA morphing boxes and parameters that control the motion
of morphing points using solver calculated sensitivities
Adjoint solver sensitivity based optimization
Morphing of Geometry or FE without Boxes
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Morphing of Geometry or FE without Boxes
Frozen Curves
Origin Curves
Target Curves
Translation
Combinations of snapping of model features to target curves and rigid transformations
Fitting existing underbody on new vehicle external upper skin
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New model surface design
Old underbody
Old wheels and exhaust system
An old vehicle underbody is to
be fitted on the new vehicle
external skin for initial design
simulation
Morphing and mesh
connecting techniques are
used to create a watertight
surface
Fitting existing underbody on new vehicle external upper skin
Adjusting Underbody floor with Boxless Morphing tools
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Orange colored areas are
translated as a frozen body and
magenta colored area is
morphed in order totransform the dimensions of the
underbody
The upper and lower
assemblies do not match
initially. There are gaps andnon corresponding areas all
around the perimeter
Adjusting Underbody floor with Boxless Morphing tools
Adjusting Underbody floor with Boxless Morphing tools
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Final adjustments for the front
wheel arch fitting on the new
upper vehicle skin are performed
with direct edge fitting (green to
orange)
Adjusting Underbody floor with Boxless Morphing tools
Morphing Optimization loop
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Morphing Optimization loop
OPTIMIZER
CL,CD
p1,p2,p3
optimump1,p2,p3
optimized CAD
original CAD mesh model
meshing &
morphing
geometry
morphing
CFD FEA two way coupling
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CFD FEA two way coupling
Create a model in ANSA and
solve in CFD solver
Extract the pressures from the
CFD solver and map them on an
FEA mesh using ANSA Results
Mapping tool
Perform an FEA simulation to
calculate the deformations
Feed in the calculated deformations in
ANSA morphing tool to deform the
original CFD mesh in the exact same
manner
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Fuel and resting liquid calculations
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Calculation of liquid volume, levels
and centre of gravity for various tank configurations and
positions
Unused liquid traps
Fuel and resting liquid calculations
One common pre-processing platform for several codes
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One common pre processing platform for several codes
NASTRAN, ABAQUS, ANSYS,
RADTHERM and more
FLUENT
STAR-CD
SC/TETRACFD++
CGNS
CFX
STAR CCM+
POWERFLOW(NASTRAN) OPENFOAM
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About ETA post-processor
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p p
An advanced CAE post-processing tool for structural analysis
- Extended its support to CFD codes
Basic concepts and features inherited from the other fields:
- Fast handling and processing of results (multi-core support)
- High performance graphics
- Low memory footprint
- Broad coverage of result types
- User friendly and flexible interface
- Wide range of tools
- Automation capabilities
- Report Composer and SpreadSheet editor
Supported formats
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- Fluent 2d and 3d *.msh, *cas, *dat
- ascii/binary data
- Partitioned results
Fluent
OpenFOAM
- Ensight format results support
Ensight
- *.ccm files
StarCCM+
CFD++
Supported Features
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- Polyhedral Elements support
- MRF (multiple reference frame) zones and moving mesh support
Visualization of Cut Planes, Contours and Vectors
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Visualization of Streamlines and Iso-surfaces
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Exploded view
of assembly
Multiple streamline visualization options
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Video generation for steady or transient simulations
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Camera Match tool
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Correlate physical images and videos with CFD results
Multi Windows
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- 3d and 2d windows
- Setup styles and entities visibility per window
- Different models can be placed in one or more windows
Results comparison
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Compare cases from different solvers or scenarios
Model Overlay
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Overlay and compare multiple iterations of data
- Set the respective files or paths of the second model
- All new data are automatically overlaid on the respective windows
Query of model dimensions
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- Measurement of distances
- Projected Area measurement
Projected Area: 1.884
Calculations
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- Drag/Lift Forces and Coefficients
- Moments
- Surface/Volume integrals
- Results Sum, Average, Difference
- Pressure Drop example:
Surface Integrals
- - - - - - - - -
Pid Name Area Weighted Average
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2 interior_downstream_cat 1187.68000
3 interior_upstream_cat 17057.3000
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Sum 18244.98
Avg 9122.49
Diff 15869.62
Plots
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Cd/Cl plots vs Time/Distance
Project Files
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Output all current entities, results & objects in a project file
Cut Planes
Geometry
WindowsStreamlines
Results
2d Plots
AnnotationsTest Data
Report
Project File
ETA native binary format file
ETA Viewer
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- License free reduced version of
- Web Browser, PowerPoint Plug-in and standalone executable
- Loads Project Files only
Vieweras PowerPoint
Plug-in in Slides
Report capabilities
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- Create HTML, PPTX or PDF reports
- Add images and videos
- Support ofETAviewer objects
- Reports can be tagged, stored and quickly recovered
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Scripting language support in ANSA and ETA
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Creation of user defined functions through scripting for automation and customization of
specific tasks, extending further the softwares functionality
Build-in script editor for script creation, debugging and execution
PYTHON programming language support
Application industries
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Marine
Motorsports
Aerospace
Rail
Automotive
and more..
Energy
Electronics
Conclusions
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ANSAcovers all the CFD pre-processing needs in a single environment,eliminating the need to use task-specific software and the exchange of data in between, thus
minimizing cost and time.
Novel features such as powerful geometry handling, fully automated CFD surface and volume mesh
generation, intelligent surface wrapping and morphing, allow engineers to obtain high quality results
faster.
ETAprovides powerful automated post-processing for CFD and integrates with ANSAas a complete
pre and post-processing solution for industrial applications.
For more information please contact us at:
e-mail: ansa@beta-cae.gr
URL: http://www.beta-cae.gr
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