A NOVEL SUBGRIDDING SCHEME BASED ON A COMBINATION OF THE FINITE-ELEMENT AND FINITE-DIFFERENCE TIME-DOMAIN METHODS

Authors
MONORCHIO A MITTRA R
Citation
A. Monorchio et R. Mittra, A NOVEL SUBGRIDDING SCHEME BASED ON A COMBINATION OF THE FINITE-ELEMENT AND FINITE-DIFFERENCE TIME-DOMAIN METHODS, IEEE transactions on antennas and propagation, 46(9), 1998, pp. 1391-1393
Citations number
3
Categorie Soggetti
Telecommunications,"Engineering, Eletrical & Electronic
Journal title
IEEE transactions on antennas and propagation → ACNP
ISSN journal
0018926X
Volume
46
Issue
9
Year of publication
1998
Pages
1391 - 1393
Database
ISI
SICI code
0018-926X(1998)46:9<1391:ANSSBO>2.0.ZU;2-9
Abstract
A simple and versatile local mesh refinement scheme, based on the hybr idization of the finite-element (FE) and the finite-difference time-do main (FDTD) algorithms, is presented in this letter. The scheme achiev es considerable flexibility in subgridding by using a transition regio n between the coarse and fine FDTD grids, meshed according to an unstr uctured grid, and solved by means of the FE method in TD. An interpola tion scheme in the time domain, which allows the use of different time steps in the coarse and fine mesh regions, is included in the paper.