A locally conformal finite-difference time-domain (FDTD) algorithm for modeling three-dimensional perfectly conducting objects
A locally conformal finite-difference time-domain (FDTD) algorithm for modeling three-dimensional perfectly conducting objects
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DOI：
10.1109/75.622536
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发表时间：
1997-09
期刊：
影响因子：
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通讯作者：
S. Dey;R. Mittra
中科院分区：
文献类型：
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作者：
S. Dey;R. Mittra
本文提出了一种用于局部扭曲轮廓的新颖共形时域有限差分 (CFDTD) 技术，可以准确地模拟弯曲金属物体。该方法易于实现并且数值稳定。给出的几个例子证明了新方法产生的结果比传统阶梯方法产生的结果要准确得多。示例几何形状包括圆柱形和球形空腔以及圆形微带贴片天线。通过比较解析技术和矩量法 (MoM) 技术得出的结果，证明了该方案的准确性。
A novel conformal finite-difference time-domain (CFDTD) technique for locally distorted contours that accurately model curved metallic objects is presented in this paper. This approach is easy to implement and is numerically stable. Several examples are presented to demonstrate that the new method yields results that are far more accurate than those generated by the conventional staircasing approach. Example geometries include cylindrical and spherical cavities, and a circular microstrip patch antenna. Accuracy of the scheme is demonstrated by comparing the results derived from analytical and Method of Moments (MoM) techniques.