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全局稳定性一致的共形卷积完全匹配层

Conformal convolutional perfectly matched layer with uniform stability

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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。

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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中图分类号:O441.4

DOI:10.3788/hplpb20132502.0441

所属栏目:高功率微波

基金项目:国家高技术发展计划项目

收稿日期:2012-04-20

修改稿日期:2012-06-29

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作者单位    点击查看

王玥:西北核技术研究所, 西安 710024
王建国:西北核技术研究所, 西安 710024西安交通大学 电信学院, 西安 710049
张殿辉:西北核技术研究所, 西安 710024
陈再高:西北核技术研究所, 西安 710024
蔡利兵:西北核技术研究所, 西安 710024
乔海亮:西北核技术研究所, 西安 710024

联系人作者:王玥(id_wangyue@hotmail.com)

备注:王玥(1978-),男,博士研究生,主要研究方向为全电磁粒子模拟数值算法研究及软件研制。

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引用该论文

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

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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