低温等离子体羽射流特性诊断研究  

Diagnostic study of low temperature plasma plume characteristics

作　　者：张维 陈雷[1] 宋鹏[2,3] 杨聪 刘宇 曾文[1] ZHANG Wei;CHEN Lei;SONG Peng;YANG Cong;LIU Yu;ZENG Wen(Liaoning Key Laboratory of Advanced Measurement and Test Technology for Aviation Propulsion System,ShenyangAerospace University,Shenyang 110136,China;School of Energy and Power Engineering,Dalian University ofTechnology,Dalian 116024,China;Key Laboratory of Intelligent Perception and Advanced Control,Dalian Minzu University,Dalian 116600,China)

机构地区：[1]沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室,沈阳100136 [2]大连理工大学能源与动力学院,辽宁大连116024 [3]大连民族大学智能感知与先进控制国家民委重点实验室,辽宁大连116024

出　　处：《沈阳航空航天大学学报》2019年第1期27-31,38,共6页Journal of Shenyang Aerospace University

基　　金：国家自然科学基金(项目编号:51509035;51409158);辽宁省自然科学基金重点项目(项目编号:20170540693)

摘　　要：为了高效地利用等离子体射流,深入研究大气压下等离子体射流能量机理,优化等离子体射流结构,完善等离子体射流诊断方法已成为等离子体领域的焦点。通过自主搭建的针-环电极射流结构,对大气压放电氩等离子体射流进行试验分析。采用发射光谱法-摄影法-电化学相耦合的测量方法,重点研究了不同放电频率、不同峰值电压对等离子体射流特性的影响。结果表明,针-环电极结构氩等离子体射流放电类似为辉光放电,射流激发的活性粒子主要有亚稳态Ar原子、微弱的O原子以及OH等自由基;射流长度随着外施电压的升高先呈线性增长趋势后趋于稳定状态,随着放电频率的增大射流长度也随之增长,最长可达25 mm;针-环电极结构可以实现可靠的多脉冲射流放电,具体体现为正向双脉冲、负向单脉冲的形式;等离子体射流电子激发温度随着放电频率的增大而增大。In order to efficiently use the plasma jet,the energy mechanism,optimization of the structure and diagnosis improvement of plasma jet have been focused in the field of plasma.In this paper,the atmospheric pressure discharge argon plasma jet was tested and analyzed using the self-designed needle-ring electrode jet structure.The influences of discharge frequency and peak voltage on the characteristics of plasma jet were studied by coupling the methods of emission spectrometry,photogrammetry and electrochemistry.The results show that the argon plasma jet discharge of the needle ring electrode structure is similar to the glow discharge,and the active particles excited by the jet are mainly free radicals such as Ar,OH and weak O.The jet length increases linearly with the increase of the external application voltage,and then tends to a stable state.The jet length increases up to 25 mm with the increasing of the discharge frequency.The needle and ring electrode structure can achieve a reliable multi-pulse discharge,which is embodied in the form of positive double pulse and negative single pulse.The electron excitation temperature of the plasma jet increases with the increase of the discharge frequency.

关 键 词：脉冲驱动APPJ 等离子体羽 射流长度 电学特性 辐射诊断 

分 类 号：TM832[电气工程—高电压与绝缘技术]