摘要
提出了一种用于分析复杂多目标散射问题的区域分解方法.在该方法中,每个目标作为一个独立的计算区域采用矢量有限元方法进行分析;各个区域之间通过基于格林函数的边界积分方程进行耦合;所得到的耦合矩阵方程采用基于Foldy-Lax多径散射方程的特征基函数方法进行求解.由于矢量有限元方法的灵活性,该区域分解方法特别适合于求解多个具有相同结构复杂目标的散射问题.数值算例验证了该方法的准确性和处理复杂多目标散射问题的能力.
A domain decomposition method （DDM） is presented by analyzing electromag- netic scattering problems involving multiple objects. In this method, each object is re- garded as a sub-region that is dealt with by employing the vector finite element method. The sub-regions communicate through the boundary integral equation based on Greenrs function. The coupling system of equations is solved by utilizing the characteristic basis function method. Due to the flexibility of vector finite element method, the present do- main decomposition method（DDM） can easily deal with the problems of scattering by multiple complex objects with the same configuration. The validity and capability of the method is illustrated by numerical examples.
出处
《电波科学学报》
EI
CSCD
北大核心
2014年第4期606-609,620,共5页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目(No.61308026)
中央高校基本科研业务费资助项目(No.K5051307003)
关键词
多目标
区域分解方法
有限元方法
边界积分方程
特征基函数方法
multiple objects
domain decomposition method
finite element method
boundary integral equation
characteristic basis function method
