| 粒子模拟软件吸收边界的研究 |
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| 引用本文： | 胡旻,祝大军,刘大刚,周俊,刘盛纲.粒子模拟软件吸收边界的研究[J].强激光与粒子束,2006,18(8):1315-1318. |
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| 作者姓名： | 胡旻 祝大军 刘大刚 周俊 刘盛纲 |
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| 作者单位： | 电子科技大学 物理电子学院, 成都 610054 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 实现了时域有限差分法的Gedney完全匹配层吸收边界条件，并进行了数值验证和参数优化。从结果可以看出其有较低的反射，性能优良；对吸收媒质厚度和电导率分布阶数的参数优化结果与Gedney经验值基本一致。将此吸收边界模块加入到国产粒子模拟软件CHIPIC中，同美国商业粒子模拟软件MAGIC相比有更好的吸收效果。通过对2维极坐标下磁控管的模拟，证明了此吸收边界具有实际应用价值。
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| 关 键 词： | 吸收边界 完全匹配层(PML) PIC模拟 磁控管 |
| 文章编号： | 1001-4322（2006）08-1315-04 |
| 收稿时间： | 2006-02-14 |
| 修稿时间： | 2006-05-10 |
Absorbing boundary condition of software CHIPIC |
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| HU Min,ZHU Da-jun,LIU Da-gang,ZHOU Jun,LIU Sheng-gang.Absorbing boundary condition of software CHIPIC[J].High Power Laser and Particle Beams,2006,18(8):1315-1318. |
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| Authors: | HU Min ZHU Da-jun LIU Da-gang ZHOU Jun LIU Sheng-gang |
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| Institution: | School of Physical Electronics, University of Electronics Science and Technology of China, Chengdu 610054, China |
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| Abstract: | In this paper,the Gedney-perfectly matched layer(PML) absorbing boundary condition for the finite-difference time-domain(FDTD) method is implemented and validated.And also,the Gedney-PML parameters are optimized.The results show that the numerical reflection is lower than other absorbing boundaries.The optimization of the thickness of the medium and the conductance distributing factor are in agreement with Gedney's empirical values.The module of this PML is added into the homemade software CHIPIC and enables the latter better wave absorbing than MAGIC.In addition,this module is proved applicable by simulating the model of magnetron in 2D polar coordinates system. |
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| Keywords: | Absorbing boundary condition Perfectly matched layer PIC simulation Magnetron |
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