Title :
A three-dimensional FDTD subgridding algorithm based on interpolation of current density
Author :
Xiao, Kai ; Pommerenke, David J. ; Drewniak, James L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Missouri Univ., Rolla, MO, USA
Abstract :
A three-dimensional subgridding algorithm for the finite difference time domain (FDTD) method is proposed in this paper. The method is based on interpolation of electric and magnetic current densities. The coarse-fine mesh ratio can be either 1:2 or 1:3. Results of a test model utilizing a lossless cavity excited with a dipole show no tendency of instability after 500000 time steps. The reflection in time domain at the subgridding interface was calculated to test the accuracy of the subgridding algorithm.
Keywords :
current density; electromagnetic compatibility; finite difference time-domain analysis; interpolation; FDTD algorithm; coarse-fine mesh ratio; dipole excitation; electric current density; electromagnetic modeling; finite difference time domain method; instability; interpolation; lossless cavity; magnetic current density; subgridding interface; three-dimensional subgridding algorithm; Current density; Extrapolation; Finite difference methods; Geometry; Interpolation; Magnetic domains; Spline; Stability criteria; Testing; Time domain analysis;
Conference_Titel :
Electromagnetic Compatibility, 2004. EMC 2004. 2004 InternationalSymposium on
Print_ISBN :
0-7803-8443-1
DOI :
10.1109/ISEMC.2004.1350008
