Iterative solutions to hybrid electromagnetic problems

Author

Alfonzetti, S. ; Borzì, G.

Author_Institution

Dipt. di Ing. Elettr., Elettron. e dei Sist., Univ. di Catania, Catania, Italy

fYear

2009

fDate

14-18 Sept. 2009

Firstpage

813

Lastpage

816

Abstract

This paper discusses some iterative solving strategies for open-boundary electromagnetic problems, in which the global algebraic system is partly sparse and partly dense. Three problems are considered: electrostatic, time-harmonic skin effect, and time-harmonic scattering in open-boundary domains. These problems are formulated, respectively, by means of the hybrid FEM -BEM, FEM -DBCI and FEM -RBCI methods. The paper shows that in all these cases a very good solving strategy is based on the use of the GMRES solver, virtually applied to a suitably reduced algebraic system, in which the unknowns are only the truncation boundary ones.

Keywords

algebra; boundary-elements methods; electromagnetic wave scattering; finite element analysis; iterative methods; Dirichlet boundary condition iteration; Robin boundary condition iteration; boundary element method; electrostatic; finite element method; global algebraic system; hybrid electromagnetic problem; iterative solution; time-harmonic scattering; time-harmonic skin effect; Boundary conditions; Boundary element methods; Conductors; Dielectrics; Electrostatics; Finite element methods; Integral equations; Poisson equations; Shape; Sparse matrices; Finite element method; GMRES solver; boundary element method; integral equations;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on

Conference_Location

Torino

Print_ISBN

978-1-4244-3385-8

Electronic_ISBN

978-1-4244-3386-5

Type

conf

DOI

10.1109/ICEAA.2009.5297318

Filename

5297318