| 时域积分方程数值求解中自项的修正方法 |
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| 引用本文： | 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. |
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| 作者姓名： | 王建国 罗根新 |
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| 作者单位： | 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 |
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| 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.
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| 关 键 词： | 矢量势 瞬态散射 电场积分方程 |
| 文章编号： | 1001-246X(2002)03-0249-04 |
| 收稿时间： | 2001-02-01 |
| 修稿时间： | 2001年2月1日 |
MODIFIED METHOD FOR CALCULATING THE SELFTERM IN THE SOLUTION OF TIME DOMAIN INTEGRAL EQUATIONS |
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| 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. |
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| Authors: | WANG Jian-guo LUO Gen-xin |
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| Institution: | 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 |
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| 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. |
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| Keywords: | vector potential transient scattering electric-field integral equation |
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