一种适用于ADI-FDTD法的非分裂式完全匹配层  

An Unsplit Perfectly Matched Layer for ADI-FDTD Algorithm

作　　者：刘波[1] 高本庆[2] 金林[1] 

机构地区：[1]南京电子技术研究所,南京210013 [2]北京理工大学电子工程系,北京100081

出　　处：《微波学报》2005年第3期1-4,共4页Journal of Microwaves

摘　　要：基于FDTD法中场量D-H(电位移矢量-磁场强度)迭代公式,导出了适用于AD I-FDTD法的场量非分裂式完全匹配层(PML)的实现方案,与现有的其它AD I-FDTD法的PML技术相比,具有物理概念清晰、易于操作并节省计算机资源的优点。数值结果证明:该PML技术能有效地解决吸收边界的问题,为AD I-FDTD法的发展与推广应用提供了条件。Based on an unsplit perfectly matched layer (PML) for FDTD, this paper presents a modified ADI-FDTD scheme (D-H fields formulation)and a corresponding novel PML technique for ADI-FDTD algorithm. Both of them are more efficient than those previously reported. Especially, this PML technique solves the absorbing boundary condition of ADI-FDTD in a clear and simple way. Numerical results demonstrate that this PML technique is valid while the required computational resource is reduced substantially as compared to existing approaches.

关 键 词：FDTD法 完全匹配层 分裂 适用 电位移矢量 计算机资源 迭代公式 磁场强度 实现方案 物理概念 吸收边界 数值结果 推广应用 PML 场量 技术 

分 类 号：O411.1[理学—理论物理]