时域积分方程数值求解中自项的修正方法

计算物理 ›› 2002, Vol. 19 ›› Issue (3): 249-252.

时域积分方程数值求解中自项的修正方法

王建国¹, 罗根新²

1. 西北核技术研究所, 陕西西安 710024;
2. 工程兵科研一所, 江苏无锡 214035

收稿日期:2001-02-01 修回日期:2001-04-23 出版日期:2002-05-25 发布日期:2002-05-25
作者简介:王建国(1965-),男,江苏,研究员,博士,主要从事电磁理论、瞬态电磁场数值方法和等离子体物理方面的研究,西安69信箱15分箱.

MODIFIED METHOD FOR CALCULATING THE SELFTERM IN THE SOLUTION OF TIME DOMAIN INTEGRAL EQUATIONS

WANG Jian-guo¹, LUO Gen-xin²

1. Northwest Institute of Nuclear Technology, Xi'an 710024, P R China;
2. First Scientific Research Institute of Corps of Engineers, Wuxi 214025, P R China

Received:2001-02-01 Revised:2001-04-23 Online:2002-05-25 Published:2002-05-25

摘要/Abstract

摘要： 提出了一种修正二维瞬态散射问题中矢量势自项(selfterm)的计算方法.在传统方法中,矢量势用三维格林(Green)函数表示,其中在自项计算中通常忽略同一面块上的源点和场点之间的时间延迟,修正方法中引入了这种时间延迟.并进行了数值实验.这种修正传统方法对开结构瞬态散射问题的电场积分方程能得到稳定的解.

关键词: 矢量势, 瞬态散射, 电场积分方程

Abstract: A modified method is presented to calculate the vector potential for the two-dimensional transient scattering.In the conventional method,the vector potential is expressed in terms of three dimensional Green function,in which the time delay between the source and field points in the same patch is always neglected for the selfterm.This time delay is introduced.Numerical experiments show that this modified method can provide stable solutions to the EFIE for the transient scattering from the open structures.

Key words: vector potential, transient scattering, electric-field integral equation

中图分类号:

王建国, 罗根新. 时域积分方程数值求解中自项的修正方法[J]. 计算物理, 2002, 19(3): 249-252.

WANG Jian-guo, LUO Gen-xin. MODIFIED METHOD FOR CALCULATING THE SELFTERM IN THE SOLUTION OF TIME DOMAIN INTEGRAL EQUATIONS[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2002, 19(3): 249-252.