High-order integral equation methods for problems of scattering by bumps and cavities on half-planes.
High-order integral equation methods for problems of scattering by bumps and cavities on half-planes.
复制标题
用于解决半平面上凸块和空腔散射问题的高阶积分方程方法。
DOI：
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发表时间：
2014
影响因子：
1.9
通讯作者：
O. Bruno
中科院分区：
文献类型：
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作者：
Carlos Pérez;O. Bruno
本文用高阶积分方程方法计算了理想导体或介质半平面上介质凸块和介质空腔的电磁波散射。详细地说，本文介绍的算法适用于八个经典的散射问题，即，由一个介质凸块上的一个完美的导电或介质半平面的散射，和由一个充满，过度填充，或空的介质空腔上的一个完美的导电或介质半平面的散射。在所有情况下，使用适当选择的绿色函数的单层电位的基础上的字段表示。数值远场和近场表现出良好的收敛性，离散细化，甚至在奇异场和无限电流存在的点和周围。
This paper presents high-order integral equation methods for the evaluation of electromagnetic wave scattering by dielectric bumps and dielectric cavities on perfectly conducting or dielectric half-planes. In detail, the algorithms introduced in this paper apply to eight classical scattering problems, namely, scattering by a dielectric bump on a perfectly conducting or a dielectric half-plane, and scattering by a filled, overfilled, or void dielectric cavity on a perfectly conducting or a dielectric half-plane. In all cases field representations based on single-layer potentials for appropriately chosen Green functions are used. The numerical far fields and near fields exhibit excellent convergence as discretizations are refined-even at and around points where singular fields and infinite currents exist.