| 全局稳定性一致的共形卷积完全匹配层 |
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| 引用本文： | 王玥,王建国,张殿辉,陈再高,蔡利兵,乔海亮.全局稳定性一致的共形卷积完全匹配层[J].强激光与粒子束,2013,25(2):441-445. |
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| 作者姓名： | 王玥 王建国 张殿辉 陈再高 蔡利兵 乔海亮 |
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| 作者单位： | 1.西北核技术研究所, 西安 71 0024; |
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| 基金项目： | 国家高技术发展计划项目 |
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| 摘 要： | 在正交网格体系中建立物理模型共形描述的基础上，针对采用扩展元胞技术的共形时域有限差分(ECT-CFDTD)方法模拟计算波导器件遇到的开放端口截断问题，给出了积分形式的共形卷积完全匹配层方法，算法具有与ECT-CFDTD相同的数值稳定性。设置不同的完全匹配层的控制参数，对波导中有消逝波存在的情况进行长时间模拟计算，分析共形卷积完全匹配层对消逝波的长效截断能力，分析卷积完全匹配层的截断误差。计算结果显示:积分形式的共形卷积完全匹配层可有效截断波导器件的开放端口。
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| 关 键 词： | 波导 开放端口 共形 卷积完全匹配层 全局稳定性一致 |
| 收稿时间： | 2012/4/20 |
Conformal convolutional perfectly matched layer with uniform stability |
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| Wang Yue,Wang Jianguo,Zhang Dianhui,Chen Zaigao,Cai Libing,Qiao Hailiang.Conformal convolutional perfectly matched layer with uniform stability[J].High Power Laser and Particle Beams,2013,25(2):441-445. |
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| Authors: | Wang Yue Wang Jianguo Zhang Dianhui Chen Zaigao Cai Libing Qiao Hailiang |
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| Affiliation: | 1.Northwest Institute of Nuclear Technology,Xi’an 710024,China;2.School of Electronic and Information Engineering,Xi’an Jiaotong University,Xi’an 710049,China |
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| Abstract: | Based on conformal construction of the physical model in the three dimensional orthogonal mesh system, an integral based conformal convolutional perfectly matched layer(CPML) algorithm is given for solving the open port truncation problem when the enlarged cell technique combining with conformal finite difference time domain (ECT CFDTD) method is used to simulate the wave propagation inside a hollow waveguide, and the algorithm has the same numerical stability as the ECT CFDTD method. For the evanescent wave long time propagation problems in a waveguide, several numerical simulations are done to analyse the reflection error by conducting sweeps of constitutive parameters of the integral based conformal CPML. Numerical results show that the integral based conformal CPML can be used for efficiently truncating the open port of the waveguide. |
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| Keywords: | waveguide open port conformal convolutional perfectly matched layer uniform stability |
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