An Iterative Absorbing Boundary Condition Using Varying Element Orders

Author

Paul, P. ; Webb, J.P.

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que.

Volume

43

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1325

Lastpage

1328

Abstract

Iterative absorbing boundary conditions (ABCs) are a way of truncating the unbounded domain of an electromagnetic wave problem. They require repeated solution of the field problem, with the ABC updated each time. Here, the computational expense is reduced by solving with low-order finite elements (FEs) in the early iterations and progressively increasing the order. Results for the radar cross section (RCS) of the metallic and dielectric obstacles demonstrate that the approach is accurate and significantly reduces the computation time

Keywords

electromagnetic wave absorption; electromagnetic wave propagation; finite element analysis; radar cross-sections; electromagnetic wave propagation; iterative absorbing boundary condition; low-order finite elements; metallic-dielectric obstacles; radar cross sections; varying element orders; Adaptive systems; Boundary conditions; Computational efficiency; Dielectrics; Electromagnetic scattering; Finite element methods; Magnetic analysis; Magnetic fields; Radar cross section; Radar scattering; Absorbing boundary condition (ABC); electromagnetic scattering; finite element methods (FEMs); radar cross section (RCS);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.891006

Filename

4137788