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

Volume

1B

fYear

2005

fDate

2005

Firstpage

133

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Conference_Location

Washington, DC

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1551502

Filename

1551502