PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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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 |
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 |
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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.
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Received: 02 December 2014
Revised: 04 January 2015
Accepted manuscript online:
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PACS:
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52.50.Dg
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(Plasma sources)
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52.80.-s
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(Electric discharges)
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82.45.Fk
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(Electrodes)
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52.65.Kj
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(Magnetohydrodynamic and fluid equation)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10775026, 11275042, 11305026, and 11405042). |
Corresponding Authors:
Wang De-Zhen
E-mail: wangdez@dlut.edu.cn
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About author: 52.50.Dg; 52.80.-s; 82.45.Fk; 52.65.Kj |
Cite this article:
Yan Wen (晏雯), Liu Fu-Cheng (刘福成), Sang Chao-Feng (桑超峰), Wang De-Zhen (王德真) Two-dimensional numerical study of an atmospheric pressurehelium plasma jet with dual-power electrode 2015 Chin. Phys. B 24 065203
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