Hierarchical FIT/FE Discretization for Dielectric Subcell Interfaces

Author

Gersem, Herbert De ; Schuhmann, Rolf ; Feigh, Stefan ; Weiland, Thomas

Author_Institution

Campus Kortrijk, Katholieke Univ. Leuven, Kortrijk

Volume

44

Issue

6

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

706

Lastpage

709

Abstract

The discretization of an electrostatic problem by the finite integration technique (FIT) is augmented with specialized finite-element shape functions for resolving dielectric interfaces that are not resolved by the Cartesian grid. The numerical validation shows that the achieved accuracy matches the one of a conformal discretization. The additional approximation space is implemented as a perturbation of the original Cartesian FIT formulation.

Keywords

dielectric materials; electromagnetic fields; electrostatics; mesh generation; Cartesian grid; approximation space; conformal discretization; dielectric interfaces; dielectric subcell interfaces; electromagnetic fields; electrostatic problem; finite integration technique; finite-element shape functions; hierarchical FIT/FE discretization; mesh generation; nonhomogeneous media; original Cartesian FIT formulation; Electromagnetic fields; FDTD methods; finite-element methods (FEMs); finite-integration technique (FIT); mesh generation; nonhomogeneous media; numerical analysis; simulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.915822

Filename

4526842