一种截断Cole-Cole色散媒质CPML的FDTD方案  

A FDTD Scheme for CPML Matched to Cole-Cole Dispersive Media

作　　者：刘广东[1] 

机构地区：[1]阜阳师范学院物理与电子科学学院,安徽阜阳236041

出　　处：《河南师范大学学报（自然科学版）》2015年第2期45-50,共6页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金(61071022);阜阳师范学院重点基金(2011FSKJ01ZD)

摘　　要：近年来,基于帕德(Padé)近似法,一种面向一般Cole-Cole色散媒质的时域有限差分(FDTD)方案被提出.为了应用该方案处理实际的电磁问题,发展了一种对应的卷积完全匹配层(CPML)吸收边界.该吸收边界具有复杂度低的优势,便于问题空间和吸收边界的统一处理.通过一维、三维2个算例,初步证实了该边界的良好吸收效果.Based on the Padéapproximant method,a finite-difference time-domain（FDTD）scheme for general Cole-Cole media was presented.To apply this scheme to solve real-world electromagnetic（EM）problems,a corresponding absorbing boundary,convolutional perfectly matched layer（CPML）,is developed in this paper.The presented CPML possesses low complexity such that the FDTD scheme for problem space and ABC could be implemented simultaneously.Its high absorption efficiency is preliminarily validated by one-dimensional（1D）and three-dimensional（3D）examples.

关 键 词：时域有限差分法 帕德近似法 Cole-Cole色散媒质 卷积完全匹配层 

分 类 号：O441.4[理学—电磁学]