Fast and accurate finite-element and boundary-integral method for scattering by complex targets

Author

Sheng, X.Q. ; Yung, E.K.N. ; Jin, J.M. ; Chew, W.C.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

434

Lastpage

437

Abstract

This paper studies in detail a variety of formulations for the hybrid finite-element and boundary-integral (FE-BI) methods for three-dimensional (3D) electromagnetic scattering by inhomogeneous objects. A new formulation is then proposed and numerical results show that the resulting solution has a good efficiency and accuracy and is completely immune to the problem of interior resonance. The multilevel fast multipole algorithm (MLFMA) is employed to significantly reduce the memory requirement and computational complexity of the proposed FE-BI method. The scattering by several typical targets is computed by this method, demonstrating the accuracy and efficiency of this proposed MLFMA-enhanced FE-BI method.

Keywords

boundary integral equations; computational complexity; electromagnetic wave scattering; finite element analysis; inhomogeneous media; 3D scattering; boundary-integral method; complex targets; computational complexity; electromagnetic scattering; finite-element method; hybrid FE-BI methods; inhomogeneous objects; memory requirement reduction; multilevel fast multipole algorithm; numerical results; Differential equations; Electromagnetic scattering; Finite difference methods; Finite element methods; Immune system; Integral equations; MLFMA; Message-oriented middleware; Resonance; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Electromagnetics and Its Applications, 1999. Proceedings. (ICCEA '99) 1999 International Conference on

Print_ISBN

0-7803-5802-3

Type

conf

DOI

10.1109/ICCEA.1999.825172

Filename

825172