| 环境压力对胶体推力器喷雾过程的影响 |
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| 引用本文： | 秦超晋,汤海滨,訾振鹏,王海兴.环境压力对胶体推力器喷雾过程的影响[J].空间控制技术与应用,2009,35(3):44-48. |
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| 作者姓名： | 秦超晋 汤海滨 訾振鹏 王海兴 |
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| 作者单位： | 北京航空航天大学,北京,100191 |
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| 摘 要： | 对应用于卫星微推进胶体推力器的喷雾过程进行模拟研究，采用拉格朗日粒子跟踪法计算带电液滴的运动轨迹，获得抽取极板前后液滴速度和密度的空间分布．分析推力器工作环境压力对喷雾扩散角、液滴轴向速度和推力器性能的影响．模拟结果表明：随着推力器工作环境压力的降低，液滴轴向速度增大，喷雾扩散角变化较小，推力器性能提高．当工作环境压力低于一定值时，其对喷雾过程的影响可以忽略，而推力器性能基本保持不变．
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| 关 键 词： | 喷雾 液滴运动 数值模拟 |
Effect of Ambient Pressure on Droplet's Spray Process in Colloid Thruster |
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| QIN Chaojin,TANG Haibin,ZI Zhenpeng,WANG Haixing.Effect of Ambient Pressure on Droplet''s Spray Process in Colloid Thruster[J].Aerospace Contrd and Application,2009,35(3):44-48. |
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| Authors: | QIN Chaojin TANG Haibin ZI Zhenpeng WANG Haixing |
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| Institution: | Beijing University of Aeronautics and Astronautics;Beijing 100191;China |
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| Abstract: | Modeling study of droplet's in colloid thruster is conducted in this paper.Motion of droplets is investigated by using the Lagrange tracking method.Velocity distribution and spatial distribution of droplets are obtained.The effect of ambient pressure on spray angle,axial velocity distribution of droplets and performance of the thruster are analyzed.It is shown that the axial velocity of droplets and performance of the thruster increase and spray angle is less influenced with the decrease of the ambient pres... |
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| Keywords: | spray motion of droplet numerical simulation |
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