Characteristics of Atmospheric Pressure Rotating Gliding Arc Plasmas

作     者：张浩 朱凤森 屠昕 薄拯 岑可法 李晓东 

作者机构：State Key Laboratory of Clean Energy UtilizationCollege of Energy Engineering Zhejiang University Department of Electrical Engineering and ElectronicsUniversity of Liverpool 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2016年第18卷第5期

页      面：473-477页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China(No.51576174) the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20120101110099) the Fundamental Research Funds for the Central Universities(No.2015FZA4011) 

主　　题：rotating gliding arc (RGA) gas flow rate optical emission spectroscopy motion behavior electrical characteristics 

摘      要：In this work, a novel direct current （DC） atmospheric pressure rotating gliding arc （RGA） plasma reactor has been developed for plasma-assisted chemical reactions. The influence of the gas composition and the gas flow rate on the arc dynamic behaviour and the formation of reactive species in the N2 and air gliding arc plasmas has been investigated by means of electrical signals, high speed photography, and optical emission spectroscopic diagnostics. Compared to conventional gliding arc reactors with knife-shaped electrodes which generally require a high flow rate （e.g., 10-20 L/min） to maintain a long arc length and reasonable plasma discharge zone, in this RGA system, a lower gas flow rate （e.g., 2 L/min） can also generate a larger effective plasma reaction zone with a longer arc length for chemical reactions. Two different motion patterns can be clearly observed in the N2 and air RGA plasmas. The time-resolved arc voltage signals show that three different arc dynamic modes, the arc restrike mode, takeover mode, and combined modes, can be clearly identified in the RGA plasmas. The occurrence of different motion and arc dynamic modes is strongly dependent on the composition of the working gas and gas flow rate.