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© 2008 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary
2008 International ANSYS Conference
Pressure Vessel Rapid Analysis System & HPC Accelerate Special Equipment Safety Analysis
Lifang Tan, Lintao Mei, Liang Sun, Huaqian Wang
CSEI-PERA Research Center for Simulation
© 2008 ANSYS, Inc. All rights reserved. 2 ANSYS, Inc. Proprietary
About Us
• CSEI-PERA Research Center for Simulation – joint-venture organization by China Special Equipment
Inspection and Research Institute and PERA Global (ANSYS CHINA)
– Aim at popularizing engineering simulation for the safety of special equipment, e.g. pressure vessel & pipelines, elevators, cranes, tank trucks and large amusement devices
© 2008 ANSYS, Inc. All rights reserved. 3 ANSYS, Inc. Proprietary
Two Problems Encountered
• Lack Chinese national standard complied quick tools for pressure vessel stress analysis based on ANSYS.
• Need to solve large structural, crash and CFD problem for special equipment safety in shorter time
© 2008 ANSYS, Inc. All rights reserved. 4 ANSYS, Inc. Proprietary
Why not ANSYS Pressure Equipment Module
• ANSYS Pressure Equipment Module is a good tools. But– Shell element only, not convenient for stress
linearization. – Encapsulated ASME, CODAP2005, EN13445-Tresca
and EN12445-Mises, but no Chinese Standard, e.g. JB-4732
– Does not support 64-bit Windows
© 2008 ANSYS, Inc. All rights reserved. 5 ANSYS, Inc. Proprietary
About PVRAS
• Pressure Vessel Rapid Analysis System, developed by CSEI-PERA Research Center for Simulation
• Codes of TCL/TK、APDL、UPFs, base on ANSYS classical environment
• 3D Hex solid element, stress linearization capable• Chinese standard applied• Analysis report editor provided• English & Chinese GUI
© 2008 ANSYS, Inc. All rights reserved. 6 ANSYS, Inc. Proprietary
PVRAS GUI
• Tk code Pressure Vessel Main Menu
© 2008 ANSYS, Inc. All rights reserved. 7 ANSYS, Inc. Proprietary
Steps to Use PVRAS
• Step # 1, Pre-Process in PVRAS– Create a project in PVRAS– Choose pressure vessel parts types– Define geometry, material, load and boundary conditions
• Step # 2, Solve in ANSYS– Run generated APDL in ANSYS to create 3D solid geometry,
defined material properties, apply load and boundary conditions, mesh 3D hex elements, solve, pick-up calculated parameters and contour pictures. Create a standard analysis report
• Step # 3, Edit the report in PVRAS– Insert contour pictures– Insert linearized stress path– …
© 2008 ANSYS, Inc. All rights reserved. 8 ANSYS, Inc. Proprietary
Features of PVRAS (1 of 5)
• Project management– Each project is one typical type of pressure vessel,
such as ellipsoidal or spherical head and nozzle, etc.– These parts could be defined in PVRAS GUI
© 2008 ANSYS, Inc. All rights reserved. 9 ANSYS, Inc. Proprietary
Features of PVRAS (2 of 5)
• Drag copy project or part for compare analysis– Easily copy whole project to create a new one, or– Drag (copy) a part feature from one project to another,
then modify size to create a new part feature
© 2008 ANSYS, Inc. All rights reserved. 10 ANSYS, Inc. Proprietary
Features of PVRAS (3 of 5)
• PVRAS Include Chinese pressure vessel standard– Chinese material standard, e.g. GB150-1988
– Chinese standard for some pressure vessel geometry, such as nozzle size
© 2008 ANSYS, Inc. All rights reserved. 11 ANSYS, Inc. Proprietary
Features of PVRAS (4 of 5)
• PVRAS encapsulated pressure vessel industry knowledge and rules. Some criterions in Chinese Standard JB-4732 can be chosen while do stress linearization on key location of pressure vessel
© 2008 ANSYS, Inc. All rights reserved. 12 ANSYS, Inc. Proprietary
Features of PVRAS (5 of 5)
• Powerful report editor– PVRAS generate standard report automatically– PVRAS report editor to Insert pictures, tables, etc.
© 2008 ANSYS, Inc. All rights reserved. 13 ANSYS, Inc. Proprietary
Value of PVRAS
• PVRAS encapsulated Chinese standard of pressure vessel, saved time to search various manual, improved efficiency of pressure vessel safety analysis.
• PVRAS also encapsulated CSEI-PERA 10+ years of industry knowledge and experience, such as mesh on various location, boundary conditions and load treatment.
• Lower doorsill to perform national standard complied and professional pressure vessel safety analysis.
© 2008 ANSYS, Inc. All rights reserved. 14 ANSYS, Inc. Proprietary
Why CAE HPC Systems
• Need HPC system to demo & popularizing engineering simulation capability to solve large structural, crash and CFD problem for special equipment safety in shorter time.
© 2008 ANSYS, Inc. All rights reserved. 15 ANSYS, Inc. Proprietary
Components of CAE HPC Sytem
• Workstations– 7 HP Workstation xw4400 for Pre-processing, 8GB memory, Intel
Core2 processor, Windows XP x64• SMP Server
– 1 DELL PE 6950 Server for ANSYS Distributed Solving, 32GB memory, 4 dual-core AMD Opteron, 5X300GB SAS 15K hard disk, Windows Server 2003 x64. Can solve 50M DOF problem.
• Cluster Server– 8 DELL PE 1950 Server as compute nodes for ANSYS LS-DYNA,
CFX & FLUENT parallel computing, 2 dual-core Intel Xeon 5160 processor each node (total 32 cores), Windows CCS 2003 & Linux
– 1 Supermicro SC743T-650 as head node for cluster management and storage.
• Network– Public and Private, Gigabyte Ethernet– MPI, Infiniband
© 2008 ANSYS, Inc. All rights reserved. 16 ANSYS, Inc. Proprietary
Diagram of the CAE HPC System
© 2008 ANSYS, Inc. All rights reserved. 17 ANSYS, Inc. Proprietary
Some benchmark results (ANSYS)
ANSYS 11.0 bmd-7 result on SMP server (> 4X)
3,585
1,630
1,012 787
3,486
1493
919 680
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
1 2 4 8
Elapsed Time (s)
Solver Time (s)
Cores
Name: Wing ANALYSIS TYPE: PCG
SOLVER CHOICE: STATIC Number of elements: 427,630
Number of nodes: 1,792,167 DOFs: 5,376,501
© 2008 ANSYS, Inc. All rights reserved. 18 ANSYS, Inc. Proprietary
Some benchmark results (Fluent)
• FL5L3 Turbulent flow through a transition duct
Fluent 6.2.36 benchmark on 8-node cluster (Linux-IB)
49 85
134
273
538
0
100
200
300
400
500
600
2 4 8 16 32
Rating(IB)
cores
Cells: 9,792,512Cell type: hexahedral
Models: RSM turbulenceSolver: segregated implicit
© 2008 ANSYS, Inc. All rights reserved. 19 ANSYS, Inc. Proprietary
Summary
• PVRAS developed by CSEI-PERA Research Center for Simulation improved the efficiency of the Chinese standard complied pressure vessel safety analysis.
• CAE HPC system built by the center provided the capability to solve large model in shorter time.