月面巡视器附近月尘静电迁移特性的数值模拟  

Numerical Simulation of Characteris of Electrostatic Migration of Lunar Dust near a Rover on the Lunar Surface

作　　者：钱啸宇 张易阳[2] 方筑 杨剑锋 方延玮 李水清[1] QIAN Xiaoyu;ZHANG Yiyang;FANG Zhu;YANG Jianfeng;FANG Yanwei;LI Shuiqing(Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China;Aerospace System Engineering Shanghai,Shanghai 201109,China)

机构地区：[1]清华大学能源与动力工程系,北京100084 [2]清华大学核能与新能源技术研究院,北京100084 [3]上海宇航系统工程研究所,上海201109

出　　处：《宇航学报》2024年第4期613-624,共12页Journal of Astronautics

基　　金：国家自然科学基金(52130606)。

摘　　要：针对月尘在月面巡视器附近的鞘层内的迁移和在设备表面的沉积过程开展数值模拟研究。首先,基于质点网格方法获得了巡视器附近的月表鞘层电场分布。在此基础上,分别探究了月表扬起月尘和静电悬浮月尘在鞘层电场内的迁移和在巡视器表面的沉积。研究表明,巡视器对鞘层电场的扰动作用增强了附近的电场,促进了月尘扬起和向巡视器表面的迁移沉积。当太阳天顶角较小或适中时,月尘只有达到临界行驶速度才能迁移至巡视器表面。Numerical simulations are conducted to investigate the migration of lunar dusts in the sheath near the lunar rover and the dust deposition process on the surface of the device.Firstly,the distribution of the sheath electric fields near the rover is obtained through a particle-in-cell method.Then,the migration of electrostatically lofted dusts and electrostatically levitated dusts in the sheath and their deposition on the surface of the rover are investigated,respectively.It is found that the perturbation effect of the rover on sheath electric fields enhances the nearby electric field strength,which promotes the migration and deposition of lunar dust to the surface of the rover.When the solar zenith angle is small or moderate,lunar dusts can only migrate to the surface of the rover if a critical traveling velocity is reached.

关 键 词：数值模拟 质点网格法 鞘层电场 静电扬起 静电迁移 

分 类 号：V416.5[航空宇航科学与技术—航空宇航推进理论与工程]