Novel Hybrid FETD–FDTD Formulations for Dispersive Media

Author

Akbarzadeh-Sharbaf, Ali ; Giannacopoulos, Dennis D.

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada

Volume

51

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

1

Lastpage

4

Abstract

Two hybrid formulations combining the finite-element time-domain and the finite-difference time-domain methods are proposed for modeling dispersive materials. The methods are coupled to each other in a non-overlapping fashion using a new finite-element tearing and interconnecting algorithm. In addition, one of them is a fully unconditionally stable hybrid method, in which the time step is not restricted by a stability criterion. The effect of medium dispersion is considered using the Möbius transformation technique. The proposed methods are validated through numerical studies.

Keywords

dispersive media; finite difference time-domain analysis; finite element analysis; Mobius transformation; dispersive materials; finite-difference time-domain method; finite-element interconnecting algorithm; finite-element tearing algorithm; finite-element time-domain method; hybrid FETD-FDTD formulations; Dispersion; Finite difference methods; Finite element analysis; Maxwell equations; Media; Slabs; Time-domain analysis; Dispersive media; finite-difference time-domain (FDTD); finite-element tearing and interconnecting (FETI); finite-element time-domain (FETD);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2355593

Filename

7093414