基于PIC-DSMC算法的嵌套霍尔推进器仿真性能研究  

Simulation Performance of Nested Hall Thruster Based on PIC-DSMC Algorithm

作　　者：谭睿 于博 王平阳[1] TAN Rui;YU Bo;WANG Pingyang(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Division of Electric Propulsion,Shanghai Institute of Space Propulsion,Shanghai 201112,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上海空间推进研究所电推进事业部,上海201112

出　　处：《上海航天（中英文）》2023年第4期128-135,共8页Aerospace Shanghai（Chinese&English）

基　　金：上海市自然科学基金项目(12ZR1414700)。

摘　　要：随着航天技术的发展,新型嵌套式霍尔推进器解决了传统单通道霍尔推进器功率不高和运行模式单一的问题,在航天领域发挥着愈加重要的作用。为了研究质量流量和磁场强度对嵌套型霍尔推进器性能的影响,本文采用PIC-DSMC算法,追踪和模拟等离子体粒子在电磁场作用下的运动和碰撞过程,对羽流场进行仿真。模拟结果表明:质量流量和磁场强度对推力贡献成正相关,推进器的比冲和羽流发散角则会受到双通道的综合影响。适当增大内通道的运行功率能够提升推进器整体效率。本文的模拟结果初步证明了嵌套霍尔推进器运行工况和磁场设计的可行性,并进一步为推进器的实验和优化提供了数据支持。With the development of space technology,the new nested Hall thrusters can solve the problems of low power and single operation mode of traditional single channel Hall thrusters,and play an increasingly important role in the aerospace field.In order to study the effects of mass flow rate and magnetic field intensity on the performance of nested Hall thrusters,in this paper,the particle-in-cell plus direct-simulation-of-Monte-Carlo-collision(PIC-DSMC)algorithm is used to track and simulate the motion and collision process of plasma particles under the effect of electromagnetic field and to simulate the plume field.The simulation results indicate that the mass flow rate and magnetic field intensity are positively correlated with the contribution of thrust,and the specific impulse and plume divergence angle of the thruster are comprehensively affected by both the inner and outer channels.Besides,increasing the operating power of the inner channel can appropriately improve the overall efficiency of the thruster.The simulation results of this article preliminarily prove the feasibility of the operating conditions and magnetic field design of nested Hall thrusters,and further provide data support for their experiments and optimization.

关 键 词：嵌套霍尔推进器 PIC-DSMC 比冲 羽流发散角 磁场设计 

分 类 号：TG142.71[一般工业技术—材料科学与工程]