導体空洞内電磁界のMoM解析のための残差切除法の拡張手法

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2019/12/01

タイトル(英語): Extended Versions of Residual Cutting Method for EM Field Analyses in Lossless Cavities by Method of Moments

著者名: 濱田　昌司（関西大学）

著者名(英語): Shoji Hamada (Kansai University)

キーワード: 電磁界解析，キャビティ，モーメント法，電界積分方程式，反復解法，残差切除法　　electromagnetic field analysis，cavity，method of moments，electric field integral equation，iterative solver，residual cutting method

要約(英語): Extended versions of the residual cutting method, which is a linear iterative solver, are proposed and then applied to the method of moments (MoM) to reduce calculation time. The MoM analyzed electromagnetic fields in lossless cubic cavities on the basis of electric field integral equations. The extended versions employed the BiCGSafe method, which is a type of product-type iterative method, as an inner iterative solver, and they virtually improved the convergence property of the inner solver particularly when the linear systems were ill-conditioned. We increased the cavity side length L from approximately 1 to 37.2 wavelengths (λ) in 0.2-λ increments, and we irregularly increased L above 37.2 λ to as high as 50.8 λ. The average time reduction ratio at around L≒37.2 λ was approximately 50%. The best time reduction ratio of 11.7% was observed when L≒35.2 λ. In addition, we demonstrated that the extended versions could converge the relative residual norms to less than 10-7 even in a strongly ill-conditioned case at L≒19.0 λ.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.139 No.12 （2019） 特集：電磁環境評価技術に関する論文

本誌掲載ページ: 679-687 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/139/12/139_679/_article/-char/ja/