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首页> 外文期刊>Journal of Electromagnetic Waves and Applications >Constructing nonstandard and high order FDTD schemes in cylindrical coordinates using spectral domain and modified equation methodologies-1-D case
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Constructing nonstandard and high order FDTD schemes in cylindrical coordinates using spectral domain and modified equation methodologies-1-D case

机译:使用谱域和改进的方程方法在圆柱坐标系中构造非标准和高阶FDTD方案-D情况

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摘要

One of the major drawbacks of the original Yee's algorithm is staircasing. In an attempt to overcome this flaw, especially when trying to solve electromagnetic problems involving cylindrical geometries, an FDTD scheme was formulated in cylindrical coordinates. The vast majority of works published describe an algorithm with a (2,2) order of accuracy. In this work, we use a recently introduced methodology, that of constructing finite difference schemes in the spectral domain, combined with the well-established one known as the modified equation to analyze existing cylindrical FDTD schemes and synthesize new nonstandard and high-order ones.
机译:原始Yee算法的主要缺点之一是固定。为了克服此缺陷,特别是在尝试解决涉及圆柱几何形状的电磁问题时,在圆柱坐标中提出了FDTD方案。出版的绝大多数著作都描述了一种算法,其精确度为(2,2)。在这项工作中,我们使用一种最近引入的方法,即在光谱域中构造有限差分方案,并与公认的改进方程相结合,以分析现有的圆柱FDTD方案并合成新的非标准和高阶FDTD方案。

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