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Investigation of Numerical Stability of Electromagnetic Wave Propagation Simulation using Meshless Time-Domain Method

机译:无网格时域法研究电磁波传播的数值稳定性

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To investigate a condition of the numerical stability of an electromagnetic wave propagation simulation using the meshless time-domain method (MTDM), a 1-dimensional (1D) TM mode discretized by the MTDM has been analyzed theoretically. Under some assumptions, the Courant condition for the 1D MTDM has been derived. The Courant condition does not depend on the radial basis functions required to generate shape functions of the MTDM. In addition, the Courant condition for the 1D MTDM is equivalent to that for the finite-difference time-domain method. Based on the result for the 1D case, the Courant condition for the 2-dimensional (2D) MTDM is predicted. Furthermore, for the case where the predicted Courant condition is satisfied, the numerical stability of 2D MTDM has been investigated numerically.
机译:为了研究使用无网格时域方法(MTDM)进行的电磁波传播模拟的数值稳定性条件,从理论上分析了MTDM离散化的一维(1D)TM模式。在某些假设下,已经得出了一维MTDM的Courant条件。库仑条件不取决于生成MTDM形状函数所需的径向基函数。此外,一维MTDM的Courant条件等同于有限差分时域方法的Courant条件。根据一维情况的结果,可以预测二维(2D)MTDM的Courant条件。此外,对于满足预测的库仑特条件的情况,已经对2D MTDM的数值稳定性进行了数值研究。

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