Uniform stable conformal convolutional perfectly matched layer for enlarged cell technique conformal finite-difference time-domain method |
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Authors: | Wang Yue Wang Jian-Guo Chen Zai-Gao |
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Affiliation: | 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 |
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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. |
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Keywords: | enlarged cell technique conformal finite-difference time-domain convolutional perfectly matched layer |
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