中国物理B ›› 2015, Vol. 24 ›› Issue (6): 65203-065203.doi: 10.1088/1674-1056/24/6/065203

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

Two-dimensional numerical study of an atmospheric pressurehelium plasma jet with dual-power electrode

晏雯a, 刘福成b, 桑超峰a, 王德真a   

  1. a Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China;
    b College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • 收稿日期:2014-12-02 修回日期:2015-01-04 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 10775026, 11275042, 11305026, and 11405042).

Two-dimensional numerical study of an atmospheric pressurehelium plasma jet with dual-power electrode

Yan Wen (晏雯)a, Liu Fu-Cheng (刘福成)b, Sang Chao-Feng (桑超峰)a, Wang De-Zhen (王德真)a   

  1. a Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China;
    b College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • Received:2014-12-02 Revised:2015-01-04 Online:2015-06-05 Published:2015-06-05
  • Contact: Wang De-Zhen E-mail:wangdez@dlut.edu.cn
  • About author:52.50.Dg; 52.80.-s; 82.45.Fk; 52.65.Kj
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 10775026, 11275042, 11305026, and 11405042).

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摘要：

In this paper, the characteristics of an atmospheric pressure helium plasma jet generated by a dual-power electrode (DPE) configuration are investigated by using a two-dimensional fluid model. The effect of a needle electrode on the discharge is studied by comparing the results of the DPE configuration with those of the single ring electrode configuration. It is found that the existence of the needle leads to the generation of a helium plasma jet with a higher propagation velocity, higher species density, and larger discharge width. Furthermore, the influences of the needle radius and needle-to-ring discharge gap on the generation of a plasma jet are also studied. The simulation results indicate that the needle electrode has an evident influence on the plasma jet characteristics.

关键词: atmospheric pressure, plasma jet, dual-power electrodes, fluid model

Abstract:

In this paper, the characteristics of an atmospheric pressure helium plasma jet generated by a dual-power electrode (DPE) configuration are investigated by using a two-dimensional fluid model. The effect of a needle electrode on the discharge is studied by comparing the results of the DPE configuration with those of the single ring electrode configuration. It is found that the existence of the needle leads to the generation of a helium plasma jet with a higher propagation velocity, higher species density, and larger discharge width. Furthermore, the influences of the needle radius and needle-to-ring discharge gap on the generation of a plasma jet are also studied. The simulation results indicate that the needle electrode has an evident influence on the plasma jet characteristics.

Key words: atmospheric pressure, plasma jet, dual-power electrodes, fluid model

中图分类号:  (Plasma sources)

  • 52.50.Dg
52.80.-s (Electric discharges) 82.45.Fk (Electrodes) 52.65.Kj (Magnetohydrodynamic and fluid equation)