摘要
对柯尔-柯尔(Cole-Cole)色散媒质的时域有限差分(FDTD)方案尝试给出改进:(1)保留了Cole-Cole经验公式中的静态电导率项;(2)扩展到三维情形;(3)人体乳房组织的模型参数源于实验测量.数值算例结果初步证实改进方案的可行性和有效性.改进方案适用于模拟更一般柯尔-柯尔色散媒质中的电波传播.
For finite-difference time-domain ( FDTD ) scheme in simulation of electromagnetic wave propagation in Cole-Cole dispersive media. Several improvements are made:(1) preserving a term with static ionic conductivity in Cole-Cole model, which is fit for real Cole-Cole media; ( 2 ) extending to three-dimensional ( 3-D ) case; ( 3 ) selecting parameters of human breast tissues from experiment. Feasibility and validity of the scheme is preliminarily demonstrated by numerical examples. The modified scheme is propitious to wave propagation in general Cole-Cole dispersive media.
出处
《计算物理》
CSCD
北大核心
2014年第3期363-371,共9页
Chinese Journal of Computational Physics
基金
国家自然科学基金(61071022
51271059)
安徽省自然科学基金(1308085MA13)
安徽省科技计划项目(12010302080)
阜阳师范学院重点基金(2011FSKJ01ZD)资助项目
关键词
时域有限差分方法
色散媒质
柯尔-柯尔模型
finite-difference time-domain ( FDTD) method
frequency-dependent media
Cole-Cole model