小型霍尔推进系统多物理场特性模拟研究  

Multi-physics field Simulation Study of Small Hall Thruster System

作　　者：张婉婷 郑雨松 李志心 汪友梅[1] ZHANG Wanting;ZHENG Yusong;LI Zhixin;WANG Youmei(School of Sciences,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)

机构地区：[1]杭州电子科技大学理学院,浙江杭州310018

出　　处：《杭州电子科技大学学报(自然科学版)》2025年第1期74-81,共8页Journal of Hangzhou Dianzi University:Natural Sciences

基　　金：国家自然科学基金项目(11975088,11705041,12375200)。

摘　　要：电场和磁场对霍尔推进器的性能提升和优化起着关键作用。由于霍尔推进器的几何结构具有一定的非对称性,本研究利用COMSOL多物理场仿真平台进行了精确的三维模型构建,以探讨推进器通道内部电磁场的分布特性,并对其对推进性能,即推力和效率的影响进行了定性的分析。结果表明,径向磁场在通道口附近有高密度区域,对阴极发射出的电子具有捕获作用。轴向电场可以加速电离后的离子,为推进器提供动力。该研究结果可为改进和优化霍尔推进系统提供了理论指导。Electric and magnetic fields play a crucial role in enhancing and optimizing the performance of Hall thrusters.Due to the geometric asymmetry of Hall thrusters,this study utilizes the COMSOL Multi-physics simulation platform for the construction of an accurate three-dimensional model,aiming to explore the characteristics of the electromagnetic field distribution within the thruster s channel.Furthermore,a qualitative analysis has been conducted to assess the impact of this field distribution on the propulsion performance,specifically in terms of thrust generation and efficiency.The results show that the radial magnetic field has a high-density region near the channel s throat,which exhibits a capturing effect on electrons emitted from the cathode.The axial electric field accelerates the ionized ions,providing propulsion for the thruster.These research findings offer theoretical guidance for both the improvement and the optimization of Hall thruster systems.

关 键 词：霍尔推进器 电磁场分布 三维仿真 COMSOL 

分 类 号：O539[理学—等离子体物理]