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arXiv 2011.02905math.NAcs.CEcs.NA
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层状介质中准周期二维亥姆霍兹散射的快速求解

Fast Solver for Quasi-Periodic 2D-Helmholtz Scattering in Layered Media

José Pinto, Rubén Aylwin, Carlos Jerez-Hanckes

摘要:

本文提出了一种快速谱Galerkin格式,用于离散多层周期结构或光栅中二维Helmholtz透射问题的边界积分方程。采用适当的参数化傅立叶基和排除Rayleigh-Wood异常,我们严格建立连续和离散问题的适定性,并证明了超代数误差收敛速度的建议计划。通过几个数值例子,我们证实了我们的研究结果,并表现出竞争力的性能,通过Nyström方法。

英文摘要:

We present a fast spectral Galerkin scheme for the discretization of boundary integral equations arising from two-dimensional Helmholtz transmission problems in multi-layered periodic structures or gratings. Employing suitably parametrized Fourier basis and excluding Rayleigh-Wood anomalies, we rigorously establish the well-posedness of both continuous and discrete problems, and prove super-algebraic error convergence rates for the proposed scheme. Through several numerical examples, we confirm our findings and show performances competitive to those attained via Nyström methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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