Absorbing boundary conditions for convex object-conformable boundaries

Author

Ramahi, Omar M.

Author_Institution

Compaq Comput. Corp., Maynard, MA, USA

Volume

47

Issue

7

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

1141

Lastpage

1145

Abstract

Absorbing boundary conditions (ABCs) are developed that can be applied on object-conformable outer boundaries. The new ABCs are based on the local enforcement of the Nth order Bayliss-Turkel boundary conditions where a scattering center is defined for each outer boundary node. A demonstration of the effectiveness of the new construction is provided by considering representative numerical experiments using the finite-elements method. Results show that the new ABCs provide accuracy that compares very favorably with the method of moments solution

Keywords

electromagnetic wave absorption; electromagnetic wave scattering; finite element analysis; ABC; Nth order Bayliss-Turkel boundary conditions; absorbing boundary conditions; convex object-conformable boundaries; finite-elements method; local enforcement; numerical experiment; object-conformable outer boundaries; outer boundary node; scattering center; Application software; Boundary conditions; Finite element methods; Frequency domain analysis; Geometry; Moment methods; Scattering; Shape; Surface waves; White spaces;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.785744

Filename

785744