首页|Optimization of magnetic field design for Hall thrusters based on a genetic algorithm
Optimization of magnetic field design for Hall thrusters based on a genetic algorithm
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Magnetic field design is essential for the operation of Hall thrusters.This study focuses on utilizing a genetic algorithm to optimize the magnetic field configuration of SPT70.A 2D hybrid PIC-DSMC and channel-wall erosion model are employed to analyze the plume divergence angle and wall erosion rate,while a Farady probe measurement and laser profilometry system are set up to verify the simulation results.The results demonstrate that the genetic algorithm contributes to reducing the divergence angle of the thruster plumes and alleviating the impact of high-energy particles on the discharge channel wall,reducing the erosion by 5.5％and 2.7％,respectively.Further analysis indicates that the change from a divergent magnetic field to a convergent magnetic field,combined with the upstream shift of the ionization region,contributes to the improving the operation of the Hall thruster.
magnetic field designgenetic algorithmdivergence angleerosion of discharge channelconvergent magnetic field
谭睿、杭观荣、王平阳
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School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,People's Republic of China
Division of Electric Propulsion,Shanghai Institute of Space Propulsion,Shanghai 201112,People's Republic of China
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