北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (10): 2028-2034.doi: 10.13700/j.bh.1001-5965.2017.0802

• 论文 • 上一篇    下一篇

离子推力器羽流热效应仿真分析

张建华, 李晶华, 尤凤仪, 郑鸿儒   

  1. 北京航空航天大学 宇航学院, 北京 100083
  • 收稿日期:2017-12-25 修回日期:2018-01-05 出版日期:2018-10-20 发布日期:2018-10-29
  • 通讯作者: 张建华,E-mail:zjh@buaa.edu.cn E-mail:zjh@buaa.edu.cn
  • 作者简介:张建华,男,博士,副研究员。主要研究方向:航空宇航推进理论与技术、稀薄气体动力学、火箭发动机流场计算及测试。

Simulation analysis of ion thruster plume thermal effect

ZHANG Jianhua, LI Jinghua, YOU Fengyi, ZHENG Hongru   

  1. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2017-12-25 Revised:2018-01-05 Online:2018-10-20 Published:2018-10-29

摘要: 离子推力器工作时向外喷出的羽流与航天器表面碰撞,会引起敏感材料热变形等热效应,严重时会导致航天任务失败。针对兰州空间技术物理研究所研制的LIPS-200型离子推力器羽流热效应进行了仿真分析。仿真中,使用粒子网格(PIC)方法处理等离子体运动,使用直接模拟蒙特卡罗(DSMC)方法处理粒子间碰撞,使用Maxwell模型处理粒子与壁面的能量交换,对电推进羽流热效应测量中的部分测点进行了数值模拟。结果表明,仿真结果与实验数据符合较好,离子推力器出口轴线上滞止热流仿真值与实验测量值误差小于17.0%。此外,热流计对流场的影响主要集中在热流计附近0.1 m范围内,对整体流场影响较小。

关键词: 电推进, 羽流, 热效应, PIC-DSMC方法, 数值模拟

Abstract: The plume ejected from a working ion thruster collides with the surface of spacecraft, which may cause thermal effects such as thermal deformation of the sensitive material and lead to the failure of the space mission in severe cases. In this paper, the plume thermal effect of LIPS-200 ion thruster developed by Lanzhou Institute of Space Physics was simulated. The particle in cell (PIC) method is employed to process the plasma motion, the direct simulation Monte Carlo (DSMC) method is employed to deal with the collision between particles, and the Maxwell model is employed to deal with the energy exchange between the particle and the surface. Part of the measuring points in the experiment of electric propulsion plume thermal effect was numerically simulated. The results show that the simulation results are in good agreement with the experimental data. The error between simulation results and experimental data of the stagnation heat flow on the outlet axis of the thruster is less than 17.0%. In addition, the influence of the heat flow meter on the flow field is mainly concentrated within 0.1 m near the heat flow meter, which has little impact on the overall flow field.

Key words: electric propulsion, plume, thermal effect, PIC-DSMC method, numerical simulation

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发