Analysis of Numerical Simulation of Tunnel Excavation Based on High Performance Parallel Finite Element Computing
Wang Xiaorui
Zhang Zhen
Jia Xiaofeng
Abstract：With the expansion of the scale of geotechnical engineering,the increase of the complexity and diversity of the calcu-lation parameters and the improvement of calculation accuracy,the requirement of computer computing power is higher,but a single processor can??t meet this kind of large-scale computing.Key issues involving the data input,domain decomposition tech-nique,iteration solution algorithm of linear system,and post processing for large scale geotechnical engineering using parallel finite element method based on high performance computation platform are presented in this paper.The study includes a case a-nalysis of a tunnel evacuation in the following procedure.A new feature was employed so that massive data can be read in paral-lel,and parallel software,i.e.ParMetis was used to decompose the domain,then the pre-process was in completely parallel. The preconditioned conjugate gradient method based on Jacobi preconditioner was applied to solve linear system.In post pro-cessing,the parallel visual model was obtained through the Paraview software.A 3D tunnel excavation was simulated in Deep-Comp 7000 system,on basis of which the parallel performance is analyzed and evaluated,Verified by domain decomposition al-gorithm and the feasibility of the method of solving the system equations,and has high speedup ratio and parallel efficiency.
Keywords：geotechnical engineeringparallel finite element methodhigh performance computing
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 2129-2134 )