Integral-Based Exponential Time Differencing Algorithms for General Dispersive Media and the CFS-PML
Integral-Based Exponential Time Differencing Algorithms for General Dispersive Media and the CFS-PML
复制标题
一般色散介质的基于积分的指数时差算法和 CFS-PML
DOI:
10.1109/tap.2012.2197092
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发表时间:
2012-05
影响因子:
5.7
通讯作者:
中科院分区:
文献类型:
--
作者:
Two efficient integral-based exponential time differencing (ETD) algorithms for general dispersive media in the finite-difference time domain (FDTD) are introduced. The first employs a linear approximation for the field over an integral time step in the integrand (denoted Algorithm I), and the second employs a Taylor series for approximating the field over the integral time step (denoted Algorithm II). Compared with the auxiliary differential equation (ADE) method and the piecewise linear recursive convolution (PLRC) method, the proposed algorithms have the same second-order accuracy but can lead to a substantial saving in both the memory space and CPU time consumption. To complete the scheme for the open region problems, a novel integral-based ETD implementation of the complex frequency shifted perfectly matched layer (CFS-PML) is proposed. Compared with the well-known recursive convolution implementation of the CFS-PML (CPML), this new implementation can lead to a substantial saving in the CPU time and a significant improvement of around 20 dB in the absorbing performance. And through the integral-based ETD algorithm, a much simpler interpretation of the CPML is presented.
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影响因子:
5.7
作者:
Lin, Zhili;Fang, Yuntuan;Hu, Ji;ong;Zhang, Chunxi
通讯作者:
Zhang, Chunxi
影响因子:
3.6
作者:
R. M. Joseph;S. Hagness;A. Taflove
通讯作者:
R. M. Joseph;S. Hagness;A. Taflove
影响因子:
3
作者:
S.J. Huang;F. Li
通讯作者:
S.J. Huang;F. Li
DOI:
10.1109/apmc.2008.4958061
发表时间:
2008-12
期刊:
2008 Asia-Pacific Microwave Conference
影响因子:
--
作者:
Ding Yu Heh;E. L. Tan
通讯作者:
Ding Yu Heh;E. L. Tan
影响因子:
2.1
作者:
LUEBBERS, R;HUNSBERGER, FP;SCHNEIDER, M
通讯作者:
SCHNEIDER, M