Development of an improved two-dimensional finite-element code for cylindrically symmetric eigenmodes

Author

Masuda, Kai ; Yoshikawa, Kiyoshi ; Ohnishi, Masami ; Yamamoto, Yasushi ; Toku, Hisayuki ; Sobajima, Masaaki ; Kitagaki, Jiro

Author_Institution

Inst. of Adv. Energy, Kyoto Univ., Japan

Volume

46

Issue

8

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

1180

Lastpage

1182

Abstract

A new two-dimensional finite-element (FE) eigenmode solver has been developed, which is suitable for calculating cylindrically symmetric modes. The quantity H_θ/r is used in the code to describe the electromagnetic fields instead of H_θ or rH_θ, which is preferentially used in the existing codes, and the new formulation with H_θ/r is found to show higher accuracy and smoother convergence with respect to the number of mesh points. Comparison is also made between linear and quadratic elements, resulting in remarkably higher accuracy by the latter

Keywords

cavity resonators; eigenvalues and eigenfunctions; electromagnetic field theory; finite element analysis; KUEMS; RF cavity; computer code; cylindrically symmetric eigenmode; electromagnetic field; linear element; quadratic element; two-dimensional finite-element method; Central Processing Unit; Convergence; Electromagnetic fields; Equations; Finite element methods; Guns; Iron; Klystrons; Magnetic fields; Radio frequency;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.704965

Filename

704965