Sustained diffusive alternating current gliding arc discharge in atmospheric pressure air

被引：51
作者：
Zhu, Jiajian [1 ]
Gao, Jinlong [1 ]
Li, Zhongshan [1 ]
Ehn, Andreas [1 ]
Alden, Marcus [1 ]
Larsson, Anders [2 ]
Kusano, Yukihiro [3 ]
机构：
[1] Lund Univ, Div Combust Phys, S-22100 Lund, Sweden
[2] Swedish Def Res Agcy, SE-16490 Stockholm, Sweden
[3] Tech Univ Denmark, Dept Wind Energy, Sect Composites & Mat Mech, DK-4000 Roskilde, Denmark
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 23期
基金：
欧洲研究理事会; 瑞典研究理事会;
关键词：
Glow discharges;
D O I：
10.1063/1.4903781
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Rapid transition from glow discharge to thermal arc has been a common problem in generating stable high-power non-thermal plasmas especially at ambient conditions. A sustained diffusive gliding arc discharge was generated in a large volume in atmospheric pressure air, driven by an alternating current (AC) power source. The plasma column extended beyond the water-cooled stainless steel electrodes and was stabilized by matching the flow speed of the turbulent air jet with the rated output power. Comprehensive investigations were performed using high-speed movies measured over the plasma column, synchronized with simultaneously recorded current and voltage waveforms. Dynamic details of the novel non-equilibrium discharge are revealed, which is characterized by a sinusoidal current waveform with amplitude stabilized at around 200 mA intermediate between thermal arc and glow discharge, shedding light to the governing mechanism of the sustained spark-suppressed AC gliding arc discharge. (C) 2014 AIP Publishing LLC.
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页数：5
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