Finite difference time domain dispersion reduction schemes

被引：122

作者：

Finkelstein, Bezalel ^{[1
]}

Kastner, Raphael ^{[1
]}

机构：

[1] Tel Aviv Univ, Sch Elect Engn, Dept Phys Elect, IL-69978 Tel Aviv, Israel

来源：

JOURNAL OF COMPUTATIONAL PHYSICS | 2007年 / 221卷 / 01期

关键词：

numerical methods; finite difference time domain; numerical dispersion error reduction; wave equation; electromagnetics;

D O I：

10.1016/j.jcp.2006.06.016

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The finite-difference-time-domain (FDTD), although recognized as a flexible, robust and simple to implement method for solving complex electromagnetic problems, is subject to numerical dispersion errors. In addition to the traditional ways for reducing dispersion, i.e., increasing sampling rate and using higher order degrees of accuracy, a number of schemes have been proposed recently. In this work, an unified methodology for deriving new difference schemes is presented. It is based on certain modifications of the characteristic equation that accompanies any given discretized version of the wave equation. The method is duly compared with existing schemes and verified numerically. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：422 / 438

页数：17

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