INSTABILITIES IN TIME MARCHING METHODS FOR SCATTERING - CAUSE AND RECTIFICATION

被引：69

作者：

SMITH, PD

机构：

[1] Department of Mathematics and Computer Science, University of Dundee, Dundee

来源：

ELECTROMAGNETICS | 1990年 / 10卷 / 04期

关键词：

D O I：

10.1080/02726349008908256

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The occurrence of exponentially increasing instabilities is a common feature of time-marching methods for solving an integral equation arising in a transient scattering problem. The cause of this instability is shown to be related to the interior resonances of the scatterer at which the corresponding frequency domain integral equation fails to have a unique solution. This type of instability is eliminated by an averaging process. The necessary modifications to any existing computer programs are trivial and increase computational cost by about 10%. © 1990 Taylor & Francis Group, LLC.

引用

页码：439 / 451

页数：13