An Iterative Domain Decomposition Method for Solving Wave Propagation Problems

Gergely Koczka*, Thomas Bauernfeind, Kurt Preis, Oszkar Biro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Solving electromagnetic wave propagation problems with the finite-element method results in a large number of unknowns due to the necessity of modeling an extensive portion of the surroundings of the conducting structures. These equation systems are often ill-conditioned because of the great material differences as well as changes in size between neighboring elements. In addition, the resulting matrices are indefinite. Common iterative methods exhibit poor convergence due to these conditions. Direct solution techniques result in high memory requirements. The aim of this article is to present an approach with smaller memory demand than the direct methods and better convergence properties than common iterative techniques. An iterative method based on domain decomposition is presented and compared to various conventional iterative and direct solution techniques.
Original languageEnglish
Pages (from-to)210-221
JournalElectromagnetics
Volume34
Issue number3-4
DOIs
Publication statusPublished - 2014

Fields of Expertise

  • Information, Communication & Computing

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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