Study of Plume Characteristics of a Stationary Plasma Thruster  

作　　者：钱中 王平阳 杜朝辉 康小录 

机构地区：[1]Department of Aerospace Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]Shanghai Institute of Power Machinery,Shanghai 200233,China

出　　处：《Plasma Science and Technology》2008年第5期612-618,共7页等离子体科学和技术（英文版）

基　　金：National Natural Science Foundation of China(No.50306013)

摘　　要：Electron density and temperature of the plume are measured by a double Langmuir probe in an experimental chamber. A numerical model based on both particle-in-cell scheme and direct simulation Monte Carlo hybrid method is developed to simulate the flow field of plume. The equation for plasma potential is solved by alternative direction implicit technique. The simulation is verified by comparing the computational results with the measured data. The study indicates that the electron temperature of flow field is about 2 eV and the electron density is about 2.5 ×10^16 - 5×10^15 m^-3 at the central line with a distance of 0.3 - 1.0 m downstream of the thruster exit. The model can well predict the flow field parameters of the steady plume. The efforts of this paper are referable for further investigation.Electron density and temperature of the plume are measured by a double Langmuir probe in an experimental chamber. A numerical model based on both particle-in-cell scheme and direct simulation Monte Carlo hybrid method is developed to simulate the flow field of plume. The equation for plasma potential is solved by alternative direction implicit technique. The simulation is verified by comparing the computational results with the measured data. The study indicates that the electron temperature of flow field is about 2 eV and the electron density is about 2.5 ×10^16 - 5×10^15 m^-3 at the central line with a distance of 0.3 - 1.0 m downstream of the thruster exit. The model can well predict the flow field parameters of the steady plume. The efforts of this paper are referable for further investigation.

关 键 词：PLASMA Langmuir probe PLUME PIC DSMC 

分 类 号：O539[理学—等离子体物理]