Title :
The effect of preconditioning for the iterative solution of the finite element time domain method
Author :
Srisukh, Yudhapoom ; Lee, Robert
Author_Institution :
ElectroScience Lab., Ohio State Univ., Columbus, OH
Abstract :
In this paper, a study of the effect of preconditioning on the iterative matrix solver for the FETD method applied to a cavity problem is presented. An incomplete Cholesky with drop tolerance preconditioner is applied to the conjugate gradient method and a multi-level nested dissection is used. The reduction in number of iterations versus the number of fill-ins for the preconditioner are also investigated. The convergence rate as a function of element size and order of basis functions will also be considered
Keywords :
cavity resonators; conjugate gradient methods; finite element analysis; matrix algebra; waveguide theory; FETD method; cavity problem; conjugate gradient method; drop tolerance preconditioner; finite element time domain method; iterative matrix solver; multilevel nested dissection; preconditioning; Acceleration; Computational efficiency; Convergence; Equations; Finite difference methods; Finite element methods; Geometry; Iterative methods; Symmetric matrices; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551502
