2008 int ansys conf rapid analysis special equipment

© 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


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


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


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


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


PVRAS GUI

• Tk code Pressure Vessel Main Menu


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– …


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



• 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



• PVRAS Include Chinese pressure vessel standard– Chinese material standard, e.g. GB150-1988

– Chinese standard for some pressure vessel geometry, such as nozzle size



• 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



• Powerful report editor– PVRAS generate standard report automatically– PVRAS report editor to Insert pictures, tables, etc.


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.


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.


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


Diagram of the CAE HPC System


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


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


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.

2008 int ansys conf rapid analysis special equipment

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