摘要
为了探讨不同气体介质对电晕放电离子风特性的影响,选取空气、氮气、氦气作为放电气体介质,研究了相同条件下,不同气体介质环境中针-环电晕放电离子风的推力和风速随电极电压的变化。实验结果表明,在3种气体介质中电晕放电离子风的推力随电流变化均呈现出饱和趋势,但不同气体介质的饱和点各不相同,氦气饱和电流最小,其正电晕饱和推力为0.98mN,氮气正电晕饱和推力为1.96mN,空气趋向饱和速度最慢。放电性质变化前最大推力可达11.76mN;推功比随电压呈现下降趋势,3种气体中氦气的推功比下降速度最快,空气的推功比下降速度最慢,且并不呈现线性关系;3种气体介质离子风风速差异也较大,氦气环境下离子风风速最大能达到4.4m·s^(−1),而氮气仅有1.4m·s^(−1)。现有简单的离子排斥理论并不能很好地解释以上现象,研究表明,这些现象与电子参与、气体粘滞性和密度等性质密切相关。这项研究对离子风机理的深入研究和应用都提供了重要参考。
In order to study the influence of different gas mediums on the corona discharge ion wind,selecting Air,Nitrogen and Helium as the discharge gas mediums the changes of thrust and wind speed of ion wind generated by pin-ring corona discharge with the electrode voltage are studied under the same condition.Experimental results show that the thrust of corona discharge ion wind has a saturation trend with the change of current in all three gases,but the saturation point of each gas is different.The saturation current of Helium is the smallest,which has a positive corona saturation thrust of 0.98mN.The thrust for Nitrogen is 1.96mN,and Air is the slowest gas to saturation.The maximum thrust before the change of discharge property reaches 11.76mN.For the thrust per unit power,we find it decreases with the voltage.Among three gases,for Helium its decrease is the fastest,while for Air its decreases the slowest and shows a non-linear relation.The wind speed across three gases is quite different.The maximum speed in Helium reaches 4.4m·s^(−1),but that in Nitrogen can only reach 1.4m·s^(−1).Existing ion exclusion theory is too simple to explain these phenomena clearly.This study shows that these phenomena are closely related to the property of electron participation,gas viscosity and density.Therefore,this study has a profound meaning for the research and application of the ion wind mechanism.
作者
陈圳
马贺
李山
刘友江
陈池来
CHEN Zhen;MA He;LI Shan;LIU You-jiang;CHEN Chi-lai(Institute of Intelligent Machines,Hefei Institute of Physical Sciences,Chinese Academy of Sciences,Hefei 230031;Science Island Branch,Graduate School of USTC,Hefei 230026)
出处
《核聚变与等离子体物理》
北大核心
2025年第1期111-116,共6页
Nuclear Fusion and Plasma Physics
基金
中国科学院战略性先导科技专项(A类)项目(XDA22020503)
国家自然科学基金项目(61871367)
中国科学院科研装备研制项目(YJKYYQ20210008)
中国科学院合肥物质科学研究院院长基金(YZJJ202203-CX)。
关键词
电晕放电
离子风
气体介质
推功比
Corona discharge
Ionic wind
Gas medium
Thrust per unit power
