航天器环境工程2025，Vol.42Issue(3)：298-306,9.DOI:10.12126/see.2025013
超高速等离子体束团空间传输特性及影响因素剖析
Analysis of spatial propagation and influencing factors of ultrahigh-speed plasma clouds
丁亮 1孙继鹏 1杨艳斌 2李昊 2刘庆海 2秦玮 2季启政1
作者信息
- 1. 北京卫星环境工程研究所||可靠性与环境工程技术重点实验室:北京 100094
- 2. 北京卫星环境工程研究所
- 折叠
摘要
Abstract
Understanding the propagation of ultrahigh-speed plasma clouds in orbit is critical for studying their interactions with spacecraft materials.In this study,a drift-diffusion model was established using COMSOL's rarefied gas transport module to simulate their behavior under varying neutral wind fields,orbital altitudes(500-1000 km),and initial plasma densities.The results indicate that at an initial velocity of 100 km·s-1 and a propagation distance of 10 km,wind fields exert negligible influence on the plasma cloud's density distribution at 0.1 s:the central density drops from 1.48×1020 m-3(without wind)to 1.23×1020 m-3(1500 m·s-1 wind).Increasing orbital altitude accelerates propagation but lowers overall plasma density,while higher initial densities promote faster diffusion of He+/e-clouds.These findings demonstrate the significant influence of environmental and intrinsic parameters on plasma cloud dynamics,providing theoretical guidance for the design of emission systems.关键词
等离子体束团/空间传输/漂移扩散模型/数值仿真/轨道环境Key words
plasma clouds/spatial propagation/drift-diffusion model/numerical simulation/orbital environment分类
物理学引用本文复制引用
丁亮,孙继鹏,杨艳斌,李昊,刘庆海,秦玮,季启政..超高速等离子体束团空间传输特性及影响因素剖析[J].航天器环境工程,2025,42(3):298-306,9.
