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A frequency-dependent PSTD algorithm for general dispersive media

机译:通用色散介质的频率相关PSTD算法

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摘要

Based on the Fourier representation of spatial derivatives, the recursive convolution approaches, and the perfectly matched layer (PML), we develop a pseudospectral time-domain (PSTD) algorithm for electromagnetic problems involving general dispersive media. As a result of the accurate representation of spatial derivatives, the PSTD algorithm for dispersive media requires only a small number of cells per minimum wavelength, significantly reducing the number unknowns. Multidimensional numerical results confirm efficacy of the PSTD algorithm for large-scale inhomogeneous media.
机译:基于空间导数的傅立叶表示,递归卷积方法和完美匹配层(PML),我们针对涉及常规色散介质的电磁问题开发了伪谱时域(PSTD)算法。由于可以精确表示空间导数,因此用于色散介质的PSTD算法每个最小波长仅需要少量的像元,从而大大减少了未知数。多维数值结果证实了PSTD算法对大规模非均匀介质的有效性。

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