| CPML在空中核爆电磁脉冲三维数值模拟中的应用 |
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| 引用本文： | 高春霞,陈雨生,王良厚.CPML在空中核爆电磁脉冲三维数值模拟中的应用[J].计算物理,2005,22(4):292-298. |
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| 作者姓名： | 高春霞 陈雨生 王良厚 |
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| 作者单位： | 1. 防化研究院第二研究所,北京,102205
2. 西北核技术研究所,陕西,西安,710024 |
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| 基金项目： | 国防科技预研项目基金资助项目 |
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| 摘 要： | 在分析不同类型完全匹配层(PML,perfectlymatchedlayer)特点的基础上,选用了卷积形式PML(CPML,convolutionalperfectlymatchedlayer)截断空中核爆电磁脉冲(NEMP,nuclearelectromagneticpulse)数值模拟的开放边界.从自由空间中电磁波的平面波解和分裂形式的PML出发,构造了未分裂形式的PML,应用付里叶变换的卷积定理,推导出三维旋转椭球-双曲正交坐标系下CPML介质中电磁场的迭代形式的离散方程.获得了很好的截断效果,展示了CPML在NEMP数值模拟中的应用前景.
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| 关 键 词： | 卷积完全匹配层 时域有限差分 电磁脉冲 核爆炸 截断 |
| 文章编号： | 1001-246X（2005）04-0292-07 |
| 收稿时间： | 2004-10-21 |
| 修稿时间： | 2005-01-21 |
The Application of CPML in Three-dimensional Numerical Simulation of Low-altitude Electromagnetic Pulse |
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| GAO Chun-xia,CHEN Yu-sheng,WANG Liang-hou.The Application of CPML in Three-dimensional Numerical Simulation of Low-altitude Electromagnetic Pulse[J].Chinese Journal of Computational Physics,2005,22(4):292-298. |
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| Authors: | GAO Chun-xia CHEN Yu-sheng WANG Liang-hou |
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| Abstract: | According to the characteristics of perfectly matched layers(PML), a convolutional PML (CPML) is chosen to truncate open boundaries used in the numerical simulation of low-altitude electromagnetic pulse. On the basis of the split-field PML and the plane-wave solution of electromagnetic field in a free space, an unsplit-field PML is constructed. With convolutional theorem in the Fourier transformation, discerete iterative equations of electromagnetic field components in the CPML media are presented in three-dimensional prolate-spheroidal coordinate system. The effectiveness of the method in numerical simulation of nuclear electromagnetic pulse is shown. |
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| Keywords: | convolutional perfectly matched layer FDTD electromagnetic pulse nuclear explosion truncation |
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