中国物理B ›› 2016, Vol. 25 ›› Issue (1): 15202-015202.doi: 10.1088/1674-1056/25/1/015202

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium-air plasma jet

Mu-Yang Qian(钱沐杨), Cong-Ying Yang(杨从影), Zhen-dong Wang(王震东), Xiao-Chang Chen(陈小昌), San-Qiu Liu(刘三秋), De-Zhen Wang(王德真)   

  1. 1. Department of Physics, Nanchang University, Nanchang 330031, China;
    2. School of Medical, Nanchang University, Nanchang 330031, China;
    3. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China
  • 收稿日期:2015-09-01 修回日期:2015-10-27 出版日期:2016-01-05 发布日期:2016-01-05
  • 通讯作者: Mu-Yang Qian, Zhen-dong Wang E-mail:qianmuyang@ncu.edu.cn;wangzhendong@ncu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11465013), the Natural Science Foundation of Jiangxi Province, China (Grant No. 20151BAB212012), and the International Science and Technology Cooperation Program of China (Grant No. 2015DFA61800).

Numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium-air plasma jet

Mu-Yang Qian(钱沐杨)1, Cong-Ying Yang(杨从影)2, Zhen-dong Wang(王震东)1, Xiao-Chang Chen(陈小昌)1, San-Qiu Liu(刘三秋)1, De-Zhen Wang(王德真)3   

  1. 1. Department of Physics, Nanchang University, Nanchang 330031, China;
    2. School of Medical, Nanchang University, Nanchang 330031, China;
    3. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China
  • Received:2015-09-01 Revised:2015-10-27 Online:2016-01-05 Published:2016-01-05
  • Contact: Mu-Yang Qian, Zhen-dong Wang E-mail:qianmuyang@ncu.edu.cn;wangzhendong@ncu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11465013), the Natural Science Foundation of Jiangxi Province, China (Grant No. 20151BAB212012), and the International Science and Technology Cooperation Program of China (Grant No. 2015DFA61800).

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摘要： A numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium-air plasma jet is presented. The generation and loss mechanisms of the OH radicals in a positive half-cycle of the applied voltage are studied and discussed. It is found that the peak OH density increases with water content in air (varying from 0% to 1%) and reaches 6.3× 1018 m-3 when the water content is 1%. Besides, as the water content increases from 0.01% to 1%, the space-averaged reaction rate of three-body recombination increases dramatically and is comparable to those of main OH generation reactions.

关键词: atmospheric pressure plasma jet, OH radicals, plasma simulation

Abstract: A numerical study of the effect of water content on OH production in a pulsed-dc atmospheric pressure helium-air plasma jet is presented. The generation and loss mechanisms of the OH radicals in a positive half-cycle of the applied voltage are studied and discussed. It is found that the peak OH density increases with water content in air (varying from 0% to 1%) and reaches 6.3× 1018 m-3 when the water content is 1%. Besides, as the water content increases from 0.01% to 1%, the space-averaged reaction rate of three-body recombination increases dramatically and is comparable to those of main OH generation reactions.

Key words: atmospheric pressure plasma jet, OH radicals, plasma simulation

中图分类号:  (Plasma sources)

  • 52.50.Dg
52.65.Kj (Magnetohydrodynamic and fluid equation) 52.80.-s (Electric discharges)