电大尺寸多柱体电磁散射问题的一种快速混合算法--MEI+FMM

本文提出了一种改进的快速迭代ＭＥＩ（不变性测试方程）算法用于分析电气大尺寸多柱体的散射问题，在此算法中我们首次将快速多极子技术（ＦＭＭ）用于加速多柱体之间多次散射场的计算。应用本算法计算了柱体周长为几千波长的多柱体散射场。实际计算结果显示，一方法与原有的直接计算方法具有几乎同样的精度，而速度提高了两个数量级。

A fast mixed algorithm of MEI and FMM for the wave scattering by electrically large multi-cylinder

In this paper,a new fast iterative MEI algorithm for solving the wave scattering by electrically large multi cylinder is presented The fast multipole method is for the first time incorporated into the algorithm for accelerating the calculation of scattering field The scattering field from multi cylinder with the perimeters of over thousands of wavelength is simulated by applying this algorithm The results show that this algorithm has almost the same accuracy as the old direct approach but with two orders of magnitude speed up