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

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.

Keywords: enlarged cell technique conformal finite-difference time-domain convolutional perfectly matched layer

Received: 03 May 2014
Revised: 02 July 2014
Accepted manuscript online:

PACS:

41.20.Cv

(Electrostatics; Poisson and Laplace equations, boundary-value problems)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61231003).

Corresponding Authors: Wang Jian-Guo
E-mail: wanguiuc@mail.xjtu.edu.cn

Cite this article:

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 2015 Chin. Phys. B 24 024101

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

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