旋转滑动弧放电等离子体滑动放电模式的实验研究  

Experimental study on gliding discharge mode of rotating gliding arc discharge plasma

作　　者：雷健平 何立明 陈一 陈高成[1] 赵兵兵 赵志宇 张华磊 邓俊 费力 Lei Jian-Ping;He Li-Ming;Chen Yi;Chen Gao-Cheng;Zhao Bing-Bing;Zhao Zhi-Yu;Zhang Hua-Lei;Deng Jun;Fei Li(Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,China;Institute of Aviation Operation Service,Aviation University of Air Force,Changchun 130022,China)

机构地区：[1]中国人民解放军空军工程大学航空工程学院,西安710038 [2]中国人民解放军空军航空大学航空作战勤务学院,长春130022

出　　处：《物理学报》2020年第19期151-162,共12页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51436008,51806245);中国博士后科学基金(批准号:2019M653961)资助的课题.

摘　　要：交流旋转滑动弧放电能够在大气压下产生大面积、高活性的非平衡等离子体.为了研究交流旋转滑动弧的滑动放电模式、放电特性及光谱特性,本文采用高速相机与示波器同步采集旋转滑动弧的放电图像和电信号,采用光谱仪采集光谱信号,分析旋转滑动弧运动过程中电弧的动态行为、电信号及光谱信号特征.实验结果表明,旋转滑动弧放电过程中存在两种不同的滑动放电模式,即伴随击穿滑动放电模式(B-G模式)与稳定滑动放电模式(A-G模式).其中B-G模式以电弧旋转滑动过程中伴随击穿-熄灭-击穿的高频击穿现象为主要特征,而A-G模式以持续稳定的连续电弧滑动为主要特征.本文讨论了工作参数影响滑动弧放电模式、放电特性及光谱特性的工作机制.研究发现,电弧的放电模式和放电特性是激励电压与气体流量共同作用的结果.当气体流量较大、激励电压较小时,滑动弧为B-G模式主导的高频击穿不稳定放电;而当激励电压较大、气体流量较小时,滑动弧则为A-G模式为主导的稳定滑动放电.Alternating current rotating gliding arc discharge can produce large-scale,wide-range non-equilibrium plasma at atmospheric pressure.In order to investigate the gliding discharge mode,discharge characteristics and Spectral characteristics of AC rotating gliding arc discharge plasma,high speed camera,oscilloscope and spectrometer are used to collect discharge images and electrical signals of rotating gliding arc synchronously.Thus the dynamic behavior of arc and the characteristics of electric signal in the process of rotating gliding arc can be analyzed.The experimental results show that there are two different discharge modes in the rotating gliding arc discharge process,namely the breakdown gliding discharge mode(B-G mode)and the stable gliding discharge mode(A-G mode).The B-G mode is mainly characterized by high-frequency breakdown phenomenon(breakdown-extinguish-breakdown)during the arc gliding process,while the A-G mode is mainly characterized by stable continuous arc sliding.The paper also discusses the working mechanism in which the working parameters influence the gliding arc discharge characteristics.It is shown that the discharge mode and discharge characteristics of arc are the result of the combined action of excitation voltage and gas flow.When the gas flow is large and the excitation voltage is small,the gliding arc is an unstable discharge dominated by the B-G mode.Conversely,when the excitation voltage is large and the gas flow is small,the gliding arc is a stable gliding discharge dominated by the A-G mode.In addition,in B-G mode,the energy consumption is mainly concentrated in the breakdown moment,and the energy release is mainly pulsed.However,when the gliding arc discharge is in A-G mode,the energy dissipation is mainly used to maintain the continuous existence of the arc without extinguishing,and the energy release is stable and continuous.Affected by the gas flow rate and excitation voltage,the breakdown frequency of the B-G mode is greater than that of the A-G mode.Higher repeat breakdown f

关 键 词：旋转滑动弧 放电模式 击穿频率 击穿电流 

分 类 号：O461.2[理学—电子物理学]