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应用科学学报 ›› 2005, Vol. 23 ›› Issue (2): 122-125.

• 论文 • 上一篇    下一篇

PBSV-DDM在电大尺寸柱体电磁散射中的应用

安翔, 吕志清, 洪伟, 崔铁军, 殷晓星   

  1. 东南大学毫米波国家重点实验室计算电磁学研究中心, 江苏南京 210096
  • 收稿日期:2004-04-19 修回日期:2004-09-08 出版日期:2005-03-31 发布日期:2005-03-31
  • 作者简介:安翔(1970-),男,陕西蒲城人,博士,E-mail:xiangan@emfield.org;洪伟(1965-),男,河北张北人,教授,博导,E-mail:weihong@seu.edu.cn
  • 基金资助:
    国家863重大项目(2002AA123031);国家杰出青年科学基金资助项目(60225001)

The Application of PBSV-DDM in EM Scattering Analysis of Electrically Large 2-D Objects

AN Xiang, LÜ Zhi-qing, HONG Wei, CUI Tie-jun, YIN Xiao-xing   

  1. State Key Laboratory of Millimeter Waves, Center for Computational Electromagnetics, Southeast University, Nanjing 210096, China
  • Received:2004-04-19 Revised:2004-09-08 Online:2005-03-31 Published:2005-03-31

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68

被引次数

6

摘要： 提出了一种高效率的基于部分基础解向量的区域分解算法(PBSV-DDM).它首先求出关于连接边界上节点的部分基础解向量,在迭代过程中,只需要对部分基础解向量作简单的线性组合就可以获得整个求解区域的最终解,极大地提高了计算效率,降低了存储量.PBSV-DDM不但适合于快速高效地计算任意电大尺寸柱体的电磁散射,还特别适合于求解具有几何重复性特征的结构,如天线阵列、有限周期频率选择表面、PBG/EBG等的电磁仿真问题.数值算例验证了该方法的准确性和有效性.

关键词: 频域有限差分法, 电磁散射, 区域分解法, 基础解向量

Abstract: A new highly efficient domain decomposition method based on the partial basic solution vectors (PBSV-DDM) is presented for solving arbitrary electrically large 2D electromagnetic scattering problems. Different from the traditional domain decomposition method (DDM) by which one needs to solve matrix equations in each sub-domain during every iteration till convergence, which is considerably inefficient and time-consuming, the matrix equations in the new PBSV-DDM algorithm could be solved for a set of standard orthogonal excitation vectors to get the partial basic solutions.Then the solution in each sub-domain is obtained only by a simple vector summation operation in every iteration procedure.Obviously, the computational efficiency would be greatly improved.The validity and computational efficiency of PBSV-DDM have been verified by numerical examples.

Key words: domain decomposition method, PBSV-DDM, electromagnetic scattering, FDFD

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