Computational algorithm of FDTD method for the Lorentz transformation
Computational algorithm of FDTD method for the Lorentz transformation
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DOI：
10.1109/aps.2010.5562027
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发表时间：
2010-07
期刊：
影响因子：
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通讯作者：
H. Iwamatsu;M. Kuroda
中科院分区：
文献类型：
--
作者：
H. Iwamatsu;M. Kuroda
本文提出了一种新的时域有限差分法（FDTD）计算算法，用于分析高速运动的电磁场。将Lorentz变换应用到FDTD方法中，计算时至少需要两个框架。但在FDTD方法中，引入静止标架和运动标架是一个难点。在这里，通过使用两个重叠的网格，它使得可能使用这两个框架的FDTD方法。给出了计算参数的新方案，并作为简单算例，计算了观测点作任意方向移动时观测点处的接收波。将数值计算结果与理论计算结果进行了比较，两者吻合较好.
In this paper, new computational algorithm of FDTD method is proposed to analyze the electromagnetic field moving with higher velocity value. To apply the Lorentz transformations to FDTD method, at least two frames are required in calculation. But it is difficult to introduce two frames, rest frame and moving frame, in FDTD method. Here, by using two overlapped meshes, it makes possible to use these two frames in FDTD method. The new scheme of the calculation parameter was shown and as the easy example, the received wave at the observation point is calculated when the observation point moves for arbitrary directions. The numerical results were compared with the theoretical results and good agreements were obtained.