ANSYS Release 15.0 Structural Mechanics Highlights. ANSYS Inc. CADFEM (AG) Suisse

Transcription

1 ANSYS Release 15.0 Structural Mechanics Highlights ANSYS Inc. CADFEM (AG) Suisse 1

2 Motivation for Mesh Assemblies Geometry is not anymore the starting point of a Workbench based structural simulation. Multiple finite element models can be assembled and leverage all Mechanical functionalities, including contact detection. 2

3 Parallel part by part meshing 15.0 Serial Improvements (1 CPU) (4 CPU) 3

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5 Bolt-Thread Modeling example: Bolt Thread modeling without meshing the thread provides faster solutions while retaining a good level of accuracy. 3D threaded model 3D threaded Bolt & contact status True Thread Simulation Bolt Section Method 3D Unthreaded model 3D Unthreaded Bolt & contact status 10 times faster! Wall Time Elements True Thread Model 115 hrs 1.1 M Bolt Section Method hrs 69K 5

6 Mesh adaptivity example: 3D rubber sealing To refine the mesh so that the gap can be filled 6

7 And much more... Many new other improvements: New CATIA V6 interface Defined shortcuts for common functions Worksheet summarizing the results Named selection based on elements number 7

8 ANSYS Fluid Dynamics Release 14.5 Overview ANSYS Conference & 10ème Forum CADFEM Lausanne, 11 Septembre 2013 Sadek CHERHABILI ANSYS France 8

9 Important Note This presentation is an overview of the major improvements in ANSYS Fluid Dynamics at release 14.5 This presentation does not include Meshing technologies updates ANSYS Icepak updates ANSYS Polyflow updates After the official release, please go to the ANSYS Customer Portal for the complete release 14.5 update New capabilities Release notes Migration manual 9

10 ANSYS Fluid Release 14.5 Highlights Always better usability Integrated advanced meshing solutions Shape optimization innovations Better, faster, more robust simulations Advanced physics for specialized applications Turbo-Machinery specific solutions Internal combustion engines specific solutions Extended Multiphysics capabilities 10

11 Integrated Meshing (Fluent) Integrated Meshing in Fluent Environment Key Benefits When using TGrid, reduce the data transfer bottleneck thanks to TGrid s meshing capabilities integrated into Fluent Import CAD directly into Fluent Meshing All TGrid and Fluent functionalities Serial meshing in parallel session Fluent Target Applications Current users of ANSYS TGrid Very large meshes New Fluent (with TGrid meshing) component available in Component Systems and added in Project Schematic User interface of the Fluent Meshing Mode. (Displayed model depicts human stomach imported directly into Fluent in STL format). 11

12 Better User-Experience (ICEM CFD) 14.5 ICEM CFD Workbench Integration ICEM CFD is now available in Workbench! You can connect it and use it as ANSYS Meshing Geometrical and meshing parameters are fully supported 12

13 Better User-Experience (Fluent) Define Your Own Convergence Criteria Use monitors to determine a solution convergence (replacing or complementing the residuals convergence criteria) 13

14 Always Better Usability (CFD-Post) Better Post-Processing With CFD-Post Faster process to create for Quick Animations Improved file load speed for transient analysis Supports changing geometry topology for postprocessing of cases with moving/deforming walls (Particularly useful for IC engine simulations) Post-processing of transient statistics from Transient Blade Rows simulations 14

15 Ansoft LLC 0.35 I2.I [A] XY Plot 1 Simplorer_pulse_discharge_320mA Curve Info I2.I TR Time [s] ANSOFT RLoad.V [V] Better User-Experience (Fluent) Use Fluent as a Server FLUENT Remote Console Manage, control and steer remote Fluent sessions from Simplorer, Mathlab, Python, etc. Rseries RT_S RT_L Ccapacity IBatt VOC CT_S CT_L RLoad 0 0 I2 R TR Curve Info RLoad.V FML EQU Time [s] Discharging a battery circuit SIMPLORER / FLUENT co-simulation 15

16 Optimization (Fluent) Better Shape Optimization Capabilities Better usability of the Mesh Morpher and Before Optimizer Better controls for constraining the deformation to certain regions Drive the Mesh Morpher and Optimizer (MMO) parameters from WB/DX Better usability of the Adjoint Solver Understand how select system inputs and the geometry impact lift, drag, pressure drop from a single simulation After Large case robustness (up to 300 million cells) Compound observables Adjoint specific post-processing Mesh morpher and optimizer Target: uniform velocity at outlet 16

17 High Performance Computing Always Faster HPC Solutions Continued scalability improvements Esp. MPIs, DPM, Custom Field Functions Interpolation file speed Case file I/O speed-up Progress in GPU technology Support for UDFs, ray tracing, view factors AMG linear solver on GPU (Beta) Serial T12 Serial T12 F1 (140M cells) Case IO in seconds #Proc Baseline Optimized Internal Flow Steady Computation Fluent NVAMG AMG Total AMG Total SP x x DP x x SP x x DP x x Internal Flow Unsteady Computation Fluent NVAMG AMG Total AMG Total SP x x DP x x SP x x DP x x CPU Intel(R) Xeon(R) CPU 2.67GHz, Westmere-EP, Dual hex-core GPU Quadro 6000 FLUENT F-cycle, group size 8, smoother weight 0.9 NVAMG V-cycle, group size 8, smoother weight 0.9, determinism_flag=0 17

18 Numerics (Fluent) Improvements in Numerics Continued work on improving robustness and efficiency Improved accuracy for deforming meshes via 2 nd order time discretization With non-reflecting boundary conditions Non-Reflecting Boundary Condition for the Pressure-Based Solver - Compatible with species transport and combustion models Without non-reflecting boundary conditions Node-based gradients on polyhedral meshes for accuracy on mixed meshes 18

19 Physical Modeling (Fluent) New Physical Modeling Capabilities Combustion Faster chemistry Super-equilibrium species (CO, NOx, ) Radiation and Heat Transfer S2S and viewfactor speed-up Periodics with ray tracing Turbulence and Acoustics: Focused development and R&D Transition, hybrid LES-RANS, WMLES Post-process acoustics data generated by 3 rd parties with Fluent Ffowcs Williams- Hawkings acoustics solver 19

20 Physical Modeling (Fluent) New Multiphase Modeling Capabilities Discrete particles modeling DPM accuracy, robustness and postprocessing improvements, including DEM Eulerian Multiphase improvements Degassing boundary condition Boiling and gas-liquid enhancements Eulerian Wall Film modeling extensions Adaptive time stepping Coupling with Mixture and Eulerian Multiphase models, including thermal Condensation-Vaporization of wall films Free surface modeling extensions Maragoni effects via surface tension ext. Complete range of wave regimes in 14.5 Multiple super-imposed waves Compressible liquids 20

21 Advanced Blade Row (CFX) Additional Transient Blade Row Models Continuation of innovation in the area of Transient Blade Row Models Additional Models: Time Transformation with (equilibrium) wet steam Profile visualization and rendering Availability of transient statistics Profile Visualization Improvements in usability and capabilities in BladeModeler Design Comparison in BladeModeler Camberline Theta mode with beta end angle definition in BladeModeler Use the native Vista CPD (Centrifugal Pump Design) native Worbench application for easier setup an ANSYS, and Inc. faster October simulation 7, 2013 process

22 Advanced Blade Row (CFX) Transient Blade Row Blade Flutter Ability to perform blade flutter analysis with periodic displacement mesh motion boundary condition Blade flutter can be applied to full wheel or you can use Fourier Transformation for reduced model size and hardware resources 22

23 WB IC Engine System Application Workbench IC Engine System: Port-flow Simulation Support Original Geometry Now supported on Linux Port-flow simulation support Automatic preparation of geometry for port flow analysis Automatic meshing Improved solver & reporting Automatic solver setup from the best practices for cutcell and Hybrid meshing Automatic default swirl plane creation Default custom field functions for swirl with an ability to modify the definition Input Manager for Port Flow Final geometry with Inlet and Outlet Plenums, and port deactivated 23

24 Multiphysics Capabilities Key New Multiphysics Workflow Enabled One-way thermal coupling of Fluent and Mechanical via Systems Coupling via external data coupling External data can accept heat flow, temperature, near wall temperature and heat transfer coefficient data via an AXDT file AXDT file can be from the following sources: ANSYS Mechanical, ANSYS CFD- Post, Third party solvers, spreadsheets, etc. One and two-way coupling between Fluent and Maxwell and HFSS Exterior surfaces and volumes Energy Source Temperature Fluent Temperature Maxwell Time Averaged Loss 24

25 More Robust 2-way Fluid/Structure Interaction Multiphysics Capabilities Stabilization ( compressibility correction ) for 2-way FSI with systems coupling Improves the robustness for 2-way FSI simulations involving compressible flows Can be enabled for each dynamic zone Image courtesy of Tetra Pak 25