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讨论了时域有限差分(FDTD)法中局部网格细化技术的实现,给出了边界源的等效模型.利用一个简单的计算实例———TM平面波入射下方形介质柱的散射分析,证明了该等效源模型的正确性,同时也说明了方法的有效性.
The realization of local mesh refinement in FDTD method is discussed, and the equivalent model of boundary source is given. Using a simple calculation example --- scattering analysis of square dielectric column under TM plane wave incident, the correctness of the equivalent source model is proved and the validity of the method is also demonstrated.