A Fast Converging Resonance-Free Global Multi-Trace Method for Scattering by Partially Coated Composite Structures
A Fast Converging Resonance-Free Global Multi-Trace Method for Scattering by Partially Coated Composite Structures
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DOI：
10.1109/tap.2022.3187606
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发表时间：
2022-10
影响因子：
5.7
通讯作者：
S. Lasisi;Trevor M. Benson;G. Gradoni;M. Greenaway;K. Cools
中科院分区：
文献类型：
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作者：
S. Lasisi;Trevor M. Benson;G. Gradoni;M. Greenaway;K. Cools
全局和局部多道公式(MTF)为模拟复合材料结构的时间谐波电磁波的散射和传输提供了一种灵活而有效的方法。这一贡献将全局MTF的适用范围扩展到可穿透域、理想导电域和理想导电薄片都是设计的一部分的情况。介绍了一种新的、易于实现的无共振方程来模拟理想导体的散射。设计并研究了一种Calderón预处理器，用于限制求解离散系统所需的迭代次数。通过典型算例验证了该方法的准确性、灵活性和高效性。
Global and local multitrace formulations (MTFs) provide a flexible and efficient method for the modeling of scattering and transmission of time harmonic electromagnetic (EM) waves by composite structures. This contribution extends the domain of applicability of global MTFs to cases where penetrable domains, perfectly conducting domain, and perfectly conducting thin sheets are all part of the design. A novel and easy to implement resonance-free equation to model scattering by perfect conductors is introduced. A Calderón preconditioner designed to limit the number of iterations required for the solution of the discrete system is designed and studied. The accuracy, flexibility, and efficiency of the method are demonstrated on a representative range of examples.