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Transcript of ANSYS 14 · PDF file© 2011 ANSYS, Inc. • Facilitates simulations that require...
© 2011 ANSYS, Inc.
ANSYS 14.0
YY. PerngLead Application Engineer
© 2011 ANSYS, Inc.
Outline
• ANSYS Workbench• Geometry and Meshing• Structure Mechanics• Fluid Dynamics
© 2011 ANSYS, Inc.
• System Coupling• ANSYS RSM• ANSYS DesignXplorer• ANSYS EKM
ANSYS Workbench 14.0
© 2011 ANSYS, Inc.
• 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• Stand‐alone coupling service delivers coupling management and mapping/interpolation
System Coupling 14.0
© 2011 ANSYS, Inc.
Two‐way surface force/displacement coupling between Fluent and Mechanical via Systems Coupling• Steady/static and transient two‐way FSI• Integrated post‐processing with CFD‐Post• Workbench based setup and execution
– Windows and Linux• Alternative execution from command line
– including cross‐platform• Parallel processing with ANSYS HPC
– RSM currently not supported• Restarts for fluid‐structure interaction• Parameterization, design exploration and optimization
Multiphysics and Systems Coupling – FSI
Non‐Newtonian blood flow through a three leaf mitral valve
© 2011 ANSYS, Inc.
• RSM supports background update of the Solution (or Analysis) component for:– Mechanical (ongoing support)– MAPDL (now supports parallel solve)– CFX (now supports parallel solve, external files)
– FLUENT (now supports parallel solve, UDFs)
• Queue multiple jobs on a local machine– Overnight or other low‐usage times
• Submit jobs to remote machines– Distributed clusters– Management of files, including UDFs
• Update design points in parallel via RSM
ANSYS RSM 14.0
© 2011 ANSYS, Inc.
• Get design point simulations done faster• Job submission can be:
– One job for all design points – One job for each design point– Specify max no. of jobs
RSM: Simultaneous Update of Design Points
Time
# JobsTime
# Jobs
Time
# Jobs
Time
# Jobs
RSM
© 2011 ANSYS, Inc.
• Workbench Design Exploration and Optimization for increased understanding, innovation & simulation ROI
• New at 14.0• Reduced time required
• 2 new adaptive DOEs • Distributed solve• Design point sorting
• Increased Robustness• Support for partial DOE’s
• Increased understanding• New charts• Improved GOF• Project report
ANSYS DesignXplorer 14.0
Single Physics
Multiphysics
“What if” Study
Design Exploration
Optimization
Robust Design
R14
© 2011 ANSYS, Inc.
ANSYS EKM 14.0
• EKM • Individual user• Workgroups/Shared user
• Integration with Workbench– Save Workbench projects to the repository
– Automated indexing and Report generation for Workbench Projects
– Search and Resume Workbench projects– Execute Workbench projects for parametric runs, DOE, Optimization
– Compare multiple Workbench Projects to find the best fit candidate
© 2011 ANSYS, Inc.
Geometry Advances
Focus on enhancing your productivity through new features, increased flexibility, efficiency and usability• ANSYS DesignModeler– Core modeling improvements– Application‐specific modeling
• ANSYS SpaceClaim Direct Modeler– Improved Workbench integration– Enhanced Model Preparation
• Interoperability– Support for new CAD releases – New CAD file readers
© 2011 ANSYS, Inc.
Several new readers to provide two types of interfaces for all major CAD systems for improved productivity and flexibility• Associative Interfaces
– Associative, parametric and Bi‐directional
• Readers– Native file readers for users without live CAD access
GAMBIT reader is enhanced to support non ACIS geometry
A new DWG Reader for AutoCAD
Improved model processing for faster and targeted updates
Updated geometry interfaces
ANSYS DM 14.0: Interoperability with CAD
Pro/Engineer
ANSYS DesignModeler
© 2011 ANSYS, Inc.
• Direct entity selections are accepted for Extrude, Revolve, Sweep and Skin/Loft operations
• Named selections and sketches remain supported as valid inputs for greater automation and flexibility
ANSYS DM 14.0: Direct Entity Input
Extrude Revolve Sweep
© 2011 ANSYS, Inc.
Auto Freeze during slicing• Slice feature and Slice Material operations are now available for all bodies
– Both active and frozen
• Active bodies involved in the slice are changed to frozen state automatically
ANSYS DM 14.0: Slicing Enhancement
Bodies involved in the slice are changed to a frozen
state automatically
© 2011 ANSYS, Inc.
• Selection tolerance– Tolerance is used to detect face pairs in case of imperfect offsets
– Selecting an undetected pair manually provides feedback on tolerance value required, which can be used for automated selection
• Graphical display of thickness (using color)
ANSYS DM 14.0: Mid Surfacing
© 2011 ANSYS, Inc.
• A new option to import line bodies to create Shaft geometry
• Reads input from a text file and automatically creates line bodies with specified cross‐sections
ANSYS DM 14.0: Rotor Shaft Feature
© 2011 ANSYS, Inc.
• Bi‐directional geometry transfer between Ansoft products and Workbench applications for multi‐physics simulations (DesignModeler/Mechanical/Meshing)
ANSYS DM 14.0: Interoperability with Ansoft Products
© 2011 ANSYS, Inc.
Improved Named Selection transfer between ANSYS DesignModeler and other ANSYS Workbench applicationsSingle/Box selection toggle• RMB + LMB combination to easily toggle between the two selection modesNew Hot KeysImproved Error handling• Attach failures• Share topology failures
ANSYS DM14.0: Other Enhancements
© 2011 ANSYS, Inc.
Improved ANSYS Workbench Integration • Improved Associativity and data transfer• Support for multiple design points
Preview options for Topology Sharing • Preview sharing to view topology sharing before transferring the model into Workbench
• Help detect and fix topology sharing issues before transfer
ANSYS SpaceClaim 14.0
© 2011 ANSYS, Inc.
Volume Extract Tool Improvements • Progress reporting• Options to specify multiple faces as seeds to create more than one volume in a single step
• Option to preview face selection propagation to detect leaks during volume extraction
ANSYS SpaceClaim 14.0: Volume Extraction
© 2011 ANSYS, Inc.
Improved Selection and Repair Options
• More Selection Options• Select Parents• Select Children
• ClipView option to isolate and examine selected region
• Multi‐face patch option for fixing missing faces
ClipViewWithout multi-face
patch onWith multi-face
patch on
ANSYS SpaceClaim 14.0: Selection and Repair
© 2011 ANSYS, Inc.
Rapid & Robust Meshing
Top on the list of challenges engineering companies are facing is shortened product development schedules while at the same time the product designs themselves are becoming increasingly complex.
Meshing of these designs introduce challenges in terms of speed, robustness and accuracy.
Courtesy Siemens AG.
© 2011 ANSYS, Inc.
Assembly Meshing enables dramatically reduced time to mesh for typical CAD models by eliminating the tedious geometry clean‐up
Top‐down approach to mesh all parts at once• Uses Virtual Bodies (material points or groups) to automatically extract internal regions from assemblies
• Supports:– Meshing solids from sheet bodies– Conformal mesh between parts without requiring multibody parts
– Overlapping bodies– Tet (linear) and CutCell (hex‐dominant) mesh types
– Inflation
Assembly Meshing
© 2011 ANSYS, Inc.
Prism (inflation) layers• Speed (~2x faster)• Robustness• Element/cell quality
CutCell• Robustness• Cell quality
Performance
CutCell with inflation
Tet with inflation
© 2011 ANSYS, Inc.
• Controls order of body meshing:– Allows selective body meshing to remain persistent– User can record meshing operations, or add steps manually
Selective Meshing Worksheet
© 2011 ANSYS, Inc.
Virtual Topologies (VT) enabling improved automation, flexibility, and usability:• More interactive usage through direct graphics interaction rather than tree objects
• Ability to run “Auto VT” on selected edges, faces or bodies
• Clustering of faces/edges• Create hard vertex• Face splits• Improved meshing performance w/VTs
Cluster 1
Cluster 2
2 Virtual Faces created. 1 for each cluster.
Virtual Topologies
© 2011 ANSYS, Inc.
MultiZone improvements• Handling of cylindrical side faces• Imprinting– Through bodies– Through long stretches of connected side faces
• Support for Match control• Robustness• Speed
Hex Meshing
Speed improvements for multi‐bodyparts with swept blocks
© 2011 ANSYS, Inc.
• MAPDL/WB Integration
• Physics coupling and data mappping
• Rotating machines
• Composites & Fracture Mechanics
• Application Customization
• Thin structures modeling
• Contact analysis
• Advanced Modeling
• Performance
Structural Mechanics 14.0
© 2011 ANSYS, Inc.
Node selections for applying loads and reviewing local results
Direct FE• Nodal Orientation• Nodal Force• Nodal Pressure• FE Displacement• FE Rotation• Works with RESTART !• Displacement Results
MAPDL/WB Integration
Nodes are oriented in cylindrical system for loads and boundary condition definitions
© 2011 ANSYS, Inc.
• New data types– Heat flux– Heat generation– Thickness– Displacement (
• Weighting options– Kriging– Triangulation– Distance based average
• Multiple files import– Transient analysis– Multiple bodies
• New mapping validation
Enhanced Data Mapping
TemperaturesThicknesses
Accuracy control
© 2011 ANSYS, Inc.
Composites
• Data Integrate ACP Pre/Post into WB
• Composite failure material properties in Engineering Data
• Simple setup and post‐processing of laminate composites in Mechanical (shells only at R14)
• Allow transfer of data between ACP and Mechanical at WB schematic level
© 2011 ANSYS, Inc.
• Rigid bodies– Speed and accuracy improvements
• 2‐5x overall speed‐ups
• Flexible bodies– Projection based contact– Contact stabilization
Contact Analysis
Regular contact Projection based
Smoother temperature results on a multilayered structure
© 2011 ANSYS, Inc.
• More advanced models to include complex nonlinear phenomena– Anisotropic Hyperelasticity plus Viscoelasticity
for strain rate effects– Hyperelasticity coupled with Pore Pressure
element– Shape Memory Alloy enhanced with
superelasticity, Memory effect, New Yield Function, Differentiated Moduli (Austenite, Martensite)
– Holzapfel Model ‐ Capture the behavior of fiber‐reinforced tissue
– Coupled field‐elements for strongly coupled thermo‐mechanical analysis now accounts for plasticity induced heat generation along with friction effect
Advanced Materials
Nonlinear materials support for coupled field elements – An example of Friction Stir Welding.
Advanced Materials for Biomechanical Applications
© 2011 ANSYS, Inc.
• Enhanced 3D rezoning• Moisture effects • Coupled structure/acoustics
– Quadratic tetrahedral acoustics elements (V13)
– New acoustics sources– Absorbing areas– Symmetric FSI formulation– Near and far‐field parameters
Advanced Models
Hot-Rolling Structural Steel Analysis with 3-D Rezoning
Coupled structures/acoustics simulations Moisture diffusion
© 2011 ANSYS, Inc.
SolverKernel
Speedups
OverallSpeedups
From NAFEMS World Congress May 2011 Boston,
MA, USA
“Accelerate FEA Simulations with a
GPU”‐by Jeff Beisheim,
ANSYS
ANSYS Mechanical SMP – GPU Speedup
Tesla C2050 and Intel Xeon 5560
© 2011 ANSYS, Inc.
•Windows workstation : Two Intel Xeon 5560 processors (2.8 GHz, 8 cores total), 32 GB RAM, NVIDIA Tesla C2070, Windows 7, TCC driver mode
GPU Acceleration for DANSYS
1.52
1.16
1.70
1.20
2.24
1.44
0
1
2
3
V13cg‐1(JCG,1100k)
V13sp‐1(sparse,430k)
V13sp‐2(sparse,500k)
V13sp‐3(sparse,2400k)
V13sp‐4(sparse,1000k)
V13sp‐5(sparse,2100k)
R14 Distributed ANSYS Total Simulation Speedups
4 CPU cores
4 CPU cores + 1 GPU
© 2011 ANSYS, Inc.
Physics Coupling: Rigid Body Dynamics and Simplorer co‐simulation
© 2011 ANSYS, Inc.
• Workflow & Usability
• Multiphysics and Systems Coupling
• Solver and HPC Performance
• Rotating Machinery
• Automotive Power Train Modeling
• Multiphase Flow Modeling
• Comprehensive CFD Capabilities
Fluid Dynamics 14.0
© 2011 ANSYS, Inc.
Two‐way surface force/displacement coupling between Fluent and Mechanical via Systems Coupling• Steady/static and transient two‐way FSI• Integrated post‐processing with CFD‐Post• Workbench based setup and execution
– Windows and Linux• Alternative execution from command line
– including cross‐platform• Parallel processing with ANSYS HPC
– RSM currently not supported• Restarts for fluid‐structure interaction• Parameterization, design exploration and optimization
Multiphysics and Systems Coupling – FSI
Non‐Newtonian blood flow through a three leaf mitral valve
© 2011 ANSYS, Inc.
Multiphysics – 1‐way FSI
Significantly faster surface mapping for 1‐way FSI (CFD‐Post) β
• New Octree mapping method significantly faster algorithm – Need to set Option in CFD‐Post
• 1‐way FSI in ANSYS Workbench uses CFD‐Post ‘under‐the‐hood’– Will use mapping option set by user in CFD‐Post (which is stored in user preferences)
– Status message with diagnostics report indicates new mapping method is being used
© 2011 ANSYS, Inc.
Multiphysics – Fluent‐Maxwell
Complex multiphysics modeling• New: Electromagnetic‐thermal interactions inside Workbench using Fluent with Maxwell– One‐way and two‐way β coupling
• Combine with 1‐way FSI
β
© 2011 ANSYS, Inc.
Adjoint Solver
Adjoint Solver for Fluent fully tested, documented, and supported at R14.0
• Provides information about a fluid system that is very difficult and expensive to gather otherwise
• Computes the derivative of an engineering quantity with respect to inputs for the system
• Engineering quantities available– Down‐force, drag, pressure drop
• Robust for large meshes– Tested up to ~15M cell
Shape sensitivity to down‐force on a F1 car
Shape sensitivity to lift on NACA 0012
Lift Force (N)Geometry Predicted ResultOriginal ‐‐‐ 555.26Mod. 1 577.7 578.3Mod. 2 600.7 599.7Mod. 3 622 621.8
© 2011 ANSYS, Inc.
Solver and HPC Performance
Improved scalability (FL)• Scalability to higher core counts• Simulations with monitors including plotting and printing
• Cluster‐to‐cluster view factor file writing optimization
Hex‐core mesh, F1 car, 130 million cellsmonitor‐enabled
0
5
10
15
20
25
30
35
0 200 400 600 800 1000
Example data for scaling with R14 monitors
3072 cores
Sample cluster‐to‐cluster view factor data writing using 32‐way parallel and Infiniband.
0.4 million surface clusters
1.1 million surface clusters
R13R14
© 2011 ANSYS, Inc.
Rotating Machinery
Highly efficient time accurate simulations with Transient Blade Row capability (CFX)
• Several models available– Time Transformation (TT)
• Inlet Disturbance • Single Stage TRS
– Fourier Transformation (FT)• Inlet Disturbance • Single Stage TRS β
• Blade Flutter β
Surface pressure distribution (top) and monitor point pressure (left) from an axial fan stage:
Equivalent solution with Time Transformation at fraction of computational effort
Reference solution without a TBR method, requiring 180 deg model
Time Transformation solution, requiring only
3 stator and 2 fan blades
© 2011 ANSYS, Inc.
Automotive Power Train• New IC Engine Analysis System provides unified and simplified set‐up for internal combustion engines– Automate combustion and spray set‐up
• New Battery Model• After Treatment– Selective Catalytic Reduction (SCR)– Catalytic Converter Light‐Off
Plane showing gas temperature
Plane showing porous media temperature
© 2011 ANSYS, Inc.
Model dense particulate flows with DEM (FL)• DEM enabled as a collision model in the DPM model panel
• Use in combination with single phase and DDPM simulations
• Works in parallel• Particle size distributions• Prediction of the packing limit• Head‐on collisions• Collisions with walls• Example applications: Bubbling and circulating fluidized beds, particle deposition in filtering devices, particle discharge devices (silos)
Multiphase – DEM
3% fines start‐up ‐15 sec
and 15‐30 sec
Note that channeling is observed in the 15‐30 sec animation
NETL Fluidized Bed Simulations using DEM with DDPM
12% fines0‐25 sec
© 2011 ANSYS, Inc.
Comprehensive CFD – Motion
Improved accuracy with simplicity of immersed solids (CFX)
• Addition of boundary model for more realistic velocity forcing with immersed solids– Track nodes nearest to immersed solid– Assume constant shear (laminar) or use scalable wall function (turbulent) to modify forcing at immersed solid ‘wall’
• Can improve immersed solid predictions significantly– Continuing development for further improvements and broader applications
Boundary-fitted mesh
Immersed Solid (default)
Immersed Solid with Boundary Model
© 2011 ANSYS, Inc.
• New GUI and graphics enhancement– Context aware right click menus in graphics window
• ECAD import enhancement– Stacked die and PoP import– ODB++ import– ANF import from 3rd party tools in both binary and ASCII
• CSV import of parametric trials and polygonal sources
• Solar radiation with transparent surfaces• Layer stack‐up for PCB object• Local coordinate system based on flow direction for flow resistance specifications
• LED source and High Density Datacenter component macros
• Thermostat transient feedback macros for heat sources and fans
ANSYS Icepak
© 2011 ANSYS, Inc.
• ANSYS Icepak supports for IDF MCM, BRD and generic ANF
• Ansoft Links provide many additional import options
• Import Gerber with ANSYS Icegrb
Electronic CAD Interfaces
Electronic CAD Interfaces
ODB++
Cadence Allegro
Cadence APD
Cadence Virtuoso
Synopsys Encore
Zuken CR5000
Zuken CADSTAR
Altium
Mentor Boardstation
Mentor Expedition
Mentor PADS
Gerber
© 2011 ANSYS, Inc.
• SIwave and ANSYS Icepak exchange power map and temperature– Accounts for copper resistive losses in printed circuit boards and packages
Interface to SIwave
Current Density(SIwave)
Temperature(Icepak)
Power Map
Temperature
© 2011 ANSYS, Inc.
Summary
ANSYS 14.0 contains a wide range of enhancements:
• New infrastructure for flexible coupling between solvers to enable multiphysics and system level simulations
• Faster and robust solvers with highly scalable HPC for solving ever larger and more complex models with high fidelity and accuracy in less time
• Enhanced workflow and usability for greater user experience and productivity