任意阶时域有限差分法的数值色散缩减方案

2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI:10.23919/ACES48530.2019.9060675

Guangzhi Chen, Shunchuan Yang, Shuo Cui, D. Su

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引用次数: 0

摘要

本文提出了一种减小任意阶时域有限差分法(FDTD)在期望的高频区域内的数值色散误差的新方法。通过对一维(1D)和二维(2D)情况下的数值色散关系进行插值，可以显著减小特定带宽下的数值色散误差，特别是在高频情况下。通过两个数值实验验证了该方法的准确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical Dispersion Reduction Scheme for Arbitrary Order FDTD Method

In this paper, we present a new approach to reduce the numerical dispersion error of the arbitrary order finite-difference time-domain (FDTD) method in the desired high frequency region. By interpolation of numerical dispersion relation in one-dimensional (1D) and two-dimensional (2D) cases, the numerical disperion error can be significantly reduced for a specific bandwidth especially in the case of high frequency. Two numerical experiments are presented to validate the accuracy of the proposed method.

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来源期刊

2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)

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