Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method

doi:10.1088/1674-1056/24/2/024101

中国物理B ›› 2015, Vol. 24 ›› Issue (2): 24101-024101.doi: 10.1088/1674-1056/24/2/024101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method

王玥^a, 王建国^{a b}, 陈再高^{a b}

a Northwest Institute of Nuclear Technology, P. O. Box 69-1, Xi'an 710024, China;
b School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China

收稿日期:2014-05-03 修回日期:2014-07-02 出版日期:2015-02-05 发布日期:2015-02-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61231003).

Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method

Wang Yue (王玥)^a, Wang Jian-Guo (王建国)^{a b}, Chen Zai-Gao (陈再高)^{a b}

a Northwest Institute of Nuclear Technology, P. O. Box 69-1, Xi'an 710024, China;
b School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received:2014-05-03 Revised:2014-07-02 Online:2015-02-05 Published:2015-02-05
Contact: Wang Jian-Guo E-mail:wanguiuc@mail.xjtu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61231003).

摘要/Abstract

摘要： Based on conformal construction of physical model in a three-dimensional Cartesian grid, an integral-based conformal convolutional perfectly matched layer (CPML) is given for solving the truncation problem of the open port when the enlarged cell technique conformal finite-difference time-domain (ECT-CFDTD) method is used to simulate the wave propagation inside a perfect electric conductor (PEC) waveguide. The algorithm has the same numerical stability as the ECT-CFDTD method. For the long-time propagation problems of an evanescent wave in a waveguide, several numerical simulations are performed to analyze the reflection error by sweeping the constitutive parameters of the integral-based conformal CPML. Our numerical results show that the integral-based conformal CPML can be used to efficiently truncate the open port of the waveguide.

关键词: enlarged cell technique, conformal, finite-difference time-domain, convolutional perfectly matched layer

Abstract: Based on conformal construction of physical model in a three-dimensional Cartesian grid, an integral-based conformal convolutional perfectly matched layer (CPML) is given for solving the truncation problem of the open port when the enlarged cell technique conformal finite-difference time-domain (ECT-CFDTD) method is used to simulate the wave propagation inside a perfect electric conductor (PEC) waveguide. The algorithm has the same numerical stability as the ECT-CFDTD method. For the long-time propagation problems of an evanescent wave in a waveguide, several numerical simulations are performed to analyze the reflection error by sweeping the constitutive parameters of the integral-based conformal CPML. Our numerical results show that the integral-based conformal CPML can be used to efficiently truncate the open port of the waveguide.

Key words: enlarged cell technique, conformal, finite-difference time-domain, convolutional perfectly matched layer

中图分类号: (Electrostatics; Poisson and Laplace equations, boundary-value problems)

41.20.Cv

王玥, 王建国, 陈再高. Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method[J]. 中国物理B, 2015, 24(2): 24101-024101.

Wang Yue (王玥), Wang Jian-Guo (王建国), Chen Zai-Gao (陈再高). Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method[J]. Chin. Phys. B, 2015, 24(2): 24101-024101.

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Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method

Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method

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