[1]何小祥,徐金平.应用DDM/FEM方法研究开口腔体电磁散射特性[J].东南大学学报(自然科学版),2002,32(4):547-550.[doi:10.3969/j.issn.1001-0505.2002.04.002]
 He Xiaoxiang,Xu Jinping.Investigation on electromagnetic scattering of a cavity by the DDM/FEM method[J].Journal of Southeast University (Natural Science Edition),2002,32(4):547-550.[doi:10.3969/j.issn.1001-0505.2002.04.002]
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应用DDM/FEM方法研究开口腔体电磁散射特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第4期
页码:
547-550
栏目:
电磁场与微波技术
出版日期:
2002-07-20

文章信息/Info

Title:
Investigation on electromagnetic scattering of a cavity by the DDM/FEM method
作者:
何小祥1 徐金平2
1 南京航空航天大学信息科学与技术学院, 南京 210016; 2 东南大学毫米波国家重点实验室, 南京 210096
Author(s):
He Xiaoxiang1 Xu Jinping2
1 College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
关键词:
区域分裂法 矢量有限元法 电磁散射 传输条件
Keywords:
domain decomposition method edge-based FEM electromagnetic scattering transmission condition
分类号:
TN011
DOI:
10.3969/j.issn.1001-0505.2002.04.002
摘要:
将非重叠区域分裂法(DDM)与矢量有限元法(FEM)相结合对无限大接地的三维开口腔体的电磁(EM)散射问题进行分析.将原尺寸较大的腔体分成若干较小的子域,在各子域内推导出此边值问题的等价泛函,在此基础上应用矢量有限元法进行分析.通过传输条件实现各子域间的耦合.在腔体口面应用边界积分方程(BIE)进行描述.这样,减少了程序运行时对计算机内存的需求,易于对电大尺寸腔体的电磁散射问题进行分析计算.所得数值结果与有关文献的结果一致,从而验证了本算法的正确性.
Abstract:
A nonoverlapping Domain Decomposition Method(DDM)and edge-based finite element method(FEM)are combined to analyze the electromagnetic(EM)scattering of a three-dimensional open-ended cavity with ground plane. The original large cavity is divided into several small subdomains. In each subdomain, the equivalent functional of the boundary value problem is deduced, and the edge-based FEM is applied to analyze the problem. Coupling of different subdomains is achieved through the transmission condition at the interface. The boundary integral equation(BIE)is used on the aperture of the original cavity. In this way, the required computer memory is greatly reduced, and the analysis of the EM scattering of complex electrically large cavity becomes feasible. Numerical results are in good agreement with the published data, so the proposed technique is verified.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 教育部“高等学校骨干教师资助计划”资助项目(2000.9-2002.9).
作者简介: 何小祥(1976—),男,博士生; 徐金平(联系人),男,教授,博士生导师,jpxu@seu.edu.cn.
更新日期/Last Update: 2002-07-20