Title :
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
fDate :
6/1/2008 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.915822
