Title :
Large-Scale Magnetostatic Domain Decomposition Analysis Based on the Minimal Residual Method
Author :
Kanayama, Hiroshi ; Ogino, Masao ; Sugimoto, Shin-ichiro ; Terada, Seigo
Author_Institution :
Dept. of Mech. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
This paper describes a large-scale 3D magnetostatic analysis using the Domain Decomposition Method (DDM). To improve the convergence of an interface problem of DDM, DDM based on the Conjugate Residual (CR) method or the MINimal RESidual (MINRES) method is proposed. The CR or MINRES method improved convergence rate and showed stable convergence behavior in solving the interface problem as compared with the Conjugate Gradient (CG) method, and then reduced the computation time for a large-scale problem with 100 million degrees of freedom.
Keywords :
convergence; finite element analysis; gradient methods; magnetostatics; CG method; DDM; MINRES method; conjugate gradient method; conjugate residual method; degree of freedom; finite element method; improved convergence rate; large-scale 3D magnetostatic analysis; large-scale magnetostatic domain decomposition analysis; minimal residual method; stable convergence behavior; Computational modeling; Convergence; Educational institutions; Finite element methods; Iterative methods; Magnetic domains; Magnetostatics;
Conference_Titel :
Electromagnetic Field Problems and Applications (ICEF), 2012 Sixth International Conference on
Conference_Location :
Dalian, Liaoning
Print_ISBN :
978-1-4673-1333-9
DOI :
10.1109/ICEF.2012.6310348
