Numerical Investigation of Thermal Accommodation Coefficient and Temperature Sensitivity in a Hall Thruster 数値解析によるホールスラスタにおける熱適応係数と壁面温度の感度解析
Numerical Investigation of Thermal Accommodation Coefficient and Temperature Sensitivity in a Hall Thruster 数値解析によるホールスラスタにおける熱適応係数と壁面温度の感度解析
复制标题
霍尔推进器热调节系数和温度敏感性的数值研究 霍尔推进器热调节系数和温度敏感性的数值研究
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
I. Funaki
中科院分区：
文献类型：
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作者：
B. Karadag;Shinatora Cho;I. Funaki
了解中性和等离子体壁相互作用是重要的，以开发等离子体推力器具有更高的效率和更长的寿命。采用完全动力学的2D 3V粒子模拟/直接模拟蒙特卡罗程序（PIC/DSMC）对具有不同热适应系数和阳极/放电通道壁温的实验室模型霍尔推力器进行了数值模拟。研究了热适应系数和阳极/壁面温度对推力器性能的影响。结果表明：（1）离子热适应系数比中性适应系数和阳极/壁温对推力器性能的影响更大，（2）阳极/壁温对推力器性能的影响不显著;（3）中性粒子与等离子体和壁面相互作用引起的推力器性能的不确定性，中性不确定性，当通过电磁线圈向推进器施加更高的磁场时，
Understanding of neutral and plasma-wall interactions is important in order to develop plasma thrusters with more efficiency and long lifetime. In this study, a laboratory model Hall thruster with different thermal accommodation coefficients and anode/discharge channel wall temperatures were numerically simulated by using a fully kinetic 2D3V Particle-in-Cell (PIC)/Direct Simulation Monte Carlo (DSMC) code. The effects of thermal accommodation coefficient and anode/wall temperature on the thruster performance were investigated and discussed. Following conclusions were obtained: (1) Ion thermal accommodation coefficient is more determining over the thruster performance than neutral accommodation coefficient and anode/wall temperature; (2) Anode/wall temperature does not have significant effect on the thruster performance; (3) Uncertainties in the thruster performance arising from neutral particles’ interaction with plasma and the walls, neutral uncertainties, are increased when higher magnetic fields were applied to the thruster by means of an electromagnetic coil.