Analysis of waveguides by use of the time-domain finite-element method solved by preconditioned iterative methods

Author

Ye, Z.B. ; Ding, D.Z. ; Fan, Z.H. ; Yang, Yi

Author_Institution

Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing

Volume

3

Issue

1

fYear

2009

fDate

2/1/2009 12:00:00 AM

Firstpage

23

Lastpage

31

Abstract

Several preconditioning techniques, such as Jacobi, SSOR and ILU0, are used to accelerate the convergence of iterative methods, such as CG and GMRES, which are used to solve the large system of linear equations resulted from the time-domain finite-element methods (TDFEM). Convergence properties of these conventional preconditioning techniques are compared. The cylindrical cavity partially filled with dielectric rod and the perfectly matched layer terminated waveguides are simulated. Numerical results show that the ILU0 preconditioned method converges fastest in TDFEM compared with other preconditioning techniques when computing the same number of time steps.

Keywords

finite element analysis; iterative methods; time-domain analysis; waveguides; cylindrical cavity; dielectric rod; linear equations; perfectly matched layer; preconditioned iterative methods; preconditioning techniques; time-domain finite-element method; waveguide analysis;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20070326

Filename

4768597