| MLFMA用于三维电大复杂腔体电磁散射特性的快速计算 |
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| 引用本文： | 罗威,高正平,张怀武. MLFMA用于三维电大复杂腔体电磁散射特性的快速计算[J]. 计算物理, 2007, 24(4): 445-451 |
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| 作者姓名： | 罗威 高正平 张怀武 |
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| 作者单位： | 电子科技大学隐身材料与技术教育部工程研究中心,四川,成都,610054;电子科技大学隐身材料与技术教育部工程研究中心,四川,成都,610054;电子科技大学隐身材料与技术教育部工程研究中心,四川,成都,610054 |
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| 摘 要： | 基于迭代物理光学法的多层快速多极子算法可高效、快速求解电大腔体的散射特性,给出混合算法的迭代公式.对工程上常见的弯曲较缓慢的S弯腔体,通过合适的分段结构化分组,避免两组之间存在的部分面元遮挡的情况,应用广义互易积分处理带有复杂终端的腔体.数值计算结果表明,所用方法准确并能极大地提高计算速度.
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| 关 键 词： | 迭代物理光学法 腔体 多层快速多极子 广义互易积分 |
| 文章编号： | 1001-246X（2007）04-0445-07 |
| 收稿时间： | 2006-04-04 |
| 修稿时间： | 2006-04-042006-10-24 |
MLFMA in Fast Computation of EM Scattering by a Three-dimensional Electrically Large Complex Cavity |
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| LUO Wei,GAO Zhengping,ZHANG Huaiwu. MLFMA in Fast Computation of EM Scattering by a Three-dimensional Electrically Large Complex Cavity[J]. Chinese Journal of Computational Physics, 2007, 24(4): 445-451 |
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| Authors: | LUO Wei GAO Zhengping ZHANG Huaiwu |
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| Affiliation: | Engineering Research Center of Electromagnetic Wave Absorbing Materials, Ministry of Education, University of Electronic Science and Technology, Chengdu 610054, China |
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| Abstract: | An iterative physical optics(IPO) method combined with multilevel fast multipole algorithm(MLFMA) is used to solve electromagnetic scattering by a three-dimensional complex cavity efficiently and rapidly.The iterative formulations of hybrid algorithm are derived.For slow bending cavities in engineering,a proper subsection structured grouping method is provided to avoid the shelter of facets between two groups.A generalized reciprocity integral(GRI) method is applied to cavities with complex termination.The methods obtain accurate results and improve computing speed. |
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| Keywords: | iterative physical optics cavity multilevel fast muhipole algorithm generalized reciprocity integral |
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