卫星介质深层充电的两类计算模型对比分析

王松; 唐小金; 武占成; 易忠

doi:10.11728/cjss2016.02.202

卫星介质深层充电的两类计算模型对比分析

doi: 10.11728/cjss2016.02.202

王松^1,2, ,,
唐小金²,
武占成¹,
易忠²

1.
军械工程学院静电与电磁防护研究所石家庄 050003
2.
北京卫星环境工程研究所北京 100094

基金项目: 国家自然科学基金项目资助(51577190)

详细信息

通讯作者:
王松,E-mail:735314535@qq.com

中图分类号: P352
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出版历程
- 收稿日期: 2015-03-10
- 修回日期: 2015-11-06
- 刊出日期: 2016-03-15

Comparative Analysis of Two Representative Computation Models for Deep Dielectric Charging

1.
Research Institute of Electrostatic and Electromagnetic Protection, Ordnance Engineering College, Shijiazhuang 050003
2.
Beijing Institute of Spacecraft Environment Engineering, Beijing 100094

摘要

摘要: 计算模拟是评估航天器介质深层充电危害的重要研究方法之一. 通过粒子输运模拟, 可以得到特定空间辐射环境下介质中的电荷沉积分布, 进而根据电位/电场计算模型, 得到深层充电结果. 前期研究多是围绕RIC (辐射诱导电导率)模型及其改进模型展开的, 而目前通常采用基于电流守恒定律的简单计算模型. 为了研究二者关系, 给出其各自求解方法, 并采用已发表数据对计算结果进行验证; 从理论上阐述了后者是RIC模型的进一步简化, 只要二者考虑相同的介质电导率, 则对应计算结果就是一致的; 结合GEO恶劣电子辐射环境下平板介质模型在三类边界条件下的充电情况, 进行了充分的仿真验证. 相关结论为介质深层充电效应评估提供了有益参考.
- 介质深层充电 /
- RIC模型 /
- 电流守恒定律 /
- 粒子输运模拟 /
- 辐射诱导电导率
Abstract: It is of great importance to analyze the deep dielectric charging for spacecraft using computer simulation. The general methodology is as follows. The first step is to get the charge deposition in dielectric through particle transport simulation, and then to compute the charged electric potential and electric fields according to the potential computation model. In the preliminary stage, researchers usually employed the RIC model or its improved versions for analysis, whereas the simplified model based on current conservation law has played the dominant role in recent years. In order to study the equivalence between these two classical models, the computation method for each model is presented with verification by comparing the results of a benchmark model with the published results. Then, theoretical analysis is made that the simplified model is a further simplified version of the RIC model, and they can lead to the same charging outcome providing the same total conductivity is used. Finally, through computing the charging process of a dielectric panel with three different grounding conditions under GEO severe electron radiation, sufficient simulation verifications are provided. The obtained conclusions can make beneficial reference for the evaluation of satellite deep dielectric charging.
- Deep dielectric charging /
- RIC model /
- Current conservation law /
- Particle transport simulation /
- Radiation Induced Conductivity (RIC)

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参考文献(16)

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