| FEM/BEM混合法计算各向异性不均匀介质柱电磁散射 |
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| 引用本文： | 周平,徐金平. FEM/BEM混合法计算各向异性不均匀介质柱电磁散射[J]. 电波科学学报, 2006, 21(4): 619-623 |
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| 作者姓名： | 周平 徐金平 |
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| 作者单位： | 淮阴师范学院物理系,江苏,淮安,223001;南京航空航天大学信息科学与技术学院,江苏,南京,210016;东南大学毫米波国家重点实验室,江苏,南京,210096 |
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| 基金项目： | 江苏省教育厅自然科学基金 |
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| 摘 要： | 应用有限元-边界元(FEM/BEM)混合法计算二维各向异性不均匀介质柱电磁散射,对介质柱内、外区域分别采用有限元和边界元法进行分析,然后应用边界条件建立部分稀疏部分满填充的矩阵方程.应用内观法结合多波前法求解该矩阵方程,分别计算了均匀分布和不均匀分布的各向异性介质柱的雷达散射截面.数值计算表明,有限元-边界元混合法在分析和计算不均匀开放域电磁问题时有一定的优势.
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| 关 键 词： | 有限元法 边界元法 各向异性介质 电磁散射 雷达散射截面 |
| 文章编号： | 1005-0388（2006）04-0619-05 |
| 收稿时间： | 2004-11-28 |
| 修稿时间： | 2004-11-28 |
Computation of EM scattering by a two-dimensional anisotropic inhomogeneous cylinder with the hybrid finite element-boundary element method |
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| ZHOU Ping,XU Jin-ping. Computation of EM scattering by a two-dimensional anisotropic inhomogeneous cylinder with the hybrid finite element-boundary element method[J]. Chinese Journal of Radio Science, 2006, 21(4): 619-623 |
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| Authors: | ZHOU Ping XU Jin-ping |
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| Abstract: | Hybrid finite element-boundary element method is applied for the computation of EM scattering by a two-dimensional anisotropic inhomogeneous cylinder. The finite element and the boundary element method are employed for analyzing electromagnetic field in the inside and outer of the cylinder, respectively, and the boundary conditions are utilized to establish a matrix equation of partially sparse and partially full. Then, the linear equation is solved by inward-looking approach with the multifrontal method, and the radar cross section of a homogeneous and an inhomogeneous anisotropic cylinder is calculated, respectively. Numerical results show that the hybrid finite element-boundary element method has advantage in analyzing the EM problem of inhomogeneous and open domain. |
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| Keywords: | finite element method boundary element method anisotropic dielectric electromagnetic scattering radar cross section |
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