Title :
Application of multilevel inverse-based ILU preconditioning to implicit time domain finite element method
Author :
Yin, F. ; Sheng, X.Q.
Author_Institution :
Center for Electromagn. Simulation, Beijing Inst. of Technol., Beijing, China
Abstract :
The major disadvantage of the implicit time domain finite element method (TDFEM) is that a large sparse matrix equation has to be solved repeatedly at each time step. To speed up solving of the matrix equations, a multilevel inverse-based incomplete LU (MIB-ILU) preconditioning is employed in this paper for 3D scattering problems. Numerical experiments show that the MIB-ILU approach exhibits high efficiency and significantly improves the computing capability of the TDFEM.
Keywords :
electromagnetic wave scattering; finite element analysis; sparse matrices; time-domain analysis; 3D scattering problem; MIB-ILU preconditioning; TDFEM; electromagnetic scattering; implicit time domain finite element method; multilevel inverse-based ILU preconditioning; multilevel inverse-based incomplete LU; sparse matrix equation; Equations; Finite element methods; Mathematical model; Scattering; Sparse matrices; Three dimensional displays; Time domain analysis; electromagnetic scattering; incomplete LU preconditioning; time domain finite element;
Conference_Titel :
Microwave Technology & Computational Electromagnetics (ICMTCE), 2011 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8556-7
DOI :
10.1109/ICMTCE.2011.5915540
