Experimental and Numerical Investigation on the Interaction Between Ar Flow Channel and Ar Plasma Jet at Atmospheric Pressure

Shao, Xi; Chang, Zhengshi; Mu, Hai‐Bao; Liao, Wenlong; Zhang, Guanjun

doi:10.1109/tps.2012.2235086

Cited by 34 publications

(31 citation statements)

References 25 publications

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“…17 For multiple helium plasma jets, it is observed that they cause an earlier onset of turbulence and they emphasize more on the role of thermal effects. 18 Through numerical simulation of an argon plasma jet, Shao et al 19 found that adding an electrostatic force facilitated a forward momentum in the flow, which was in agreement with their experimental observations. 19 They also emphasized the role of the argon mole fraction variation in the flow which has been reported to influence plasma plume length in the case of a helium plasma jet.…”

Section: Introductionsupporting

confidence: 54%

“…18 Through numerical simulation of an argon plasma jet, Shao et al 19 found that adding an electrostatic force facilitated a forward momentum in the flow, which was in agreement with their experimental observations. 19 They also emphasized the role of the argon mole fraction variation in the flow which has been reported to influence plasma plume length in the case of a helium plasma jet. 20 In several studies, the onset of a turbulent flow induced by the plasma has been associated with a reduction of the plasma plume length, due to a higher concentration of air mixing in the working flow.…”

Section: Introductionsupporting

confidence: 54%

See 1 more Smart Citation

Impact of plasma jet geometry on residence times of radical species

Lalor¹,

Scally²,

Cullen

et al. 2018

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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Numerous electrode geometries and power supplies, both commercial and in-house, have been employed for the generation of low-temperature atmospheric plasma jets. In this work, the development and operation of a 12 jet nonthermal atmospheric plasma system is presented. The study is based on optical spectroscopy as a diagnostic method due to its nonintrusive nature. A key focus of this study was the material selection (conductive and nonconductive), with several polymers screened for the jet design leading to polyacetal as the choice material. Their results are compared with other atmospheric plasma jet systems. The results show a significant increase in residence time and the spatial homogeneity for ambient air's main species, including: OH, O I, O 2 , O 3 , N 2 , and N 2 þ. Their densities are studied with respect to treatment time, distance, duty cycle, and discharge frequency, as well as the jets' carrier gas chemistries (argon and helium). For their plasma jet system, the bulk of the chemical reactions occur in the surrounding atmosphere and not in the jet nozzle, which is different from most other plasma jet systems. The electron energy distribution function, for the given chemistries, is also reported.

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Section: Introductionsupporting

confidence: 54%

Section: Introductionsupporting

confidence: 54%

Impact of plasma jet geometry on residence times of radical species

Lalor¹,

Scally²,

Cullen

et al. 2018

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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show abstract

“…After calculating the Reynolds number, it is a laminar flow with the argon flow rate less than 3.2 L/min, and a turbulent flow with a higher flow rate. In the laminar flow mode, the air/argon fraction decreases with increasing the flow rate 35 . In the turbulent mode, it increases with increasing the flow rate.…”

Section: Discussionmentioning

confidence: 95%

Improved performance of a barrier-discharge plasma jet biased by a direct-current voltage

Zhang

Jia

et al. 2016

Sci Rep

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One of the challenges that plasma research encounters is how to generate a large-scale plasma plume at atmospheric pressure. Through utilizing a third electrode biased by a direct-current voltage, a longer plasma plume is generated by a plasma jet in dielectric barrier discharge configurations. Results indicate that the plume length increases until it reaches the third electrode with increasing the bias voltage. By fast photography, it is found that the plume consists of two types of streamers under the influence of the bias voltage, which develops from a guided streamer to a branching one with leaving the tube opening. The transition from the guided streamer to the branching one can be attributed to the electric field and the air/argon fraction.

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“…This fact should be attributed to the well-known coupling between the ionization waves and the hydrodynamic profile of the working gas [56][57][58][59][60][61][62][63] . In these cited works, it is established that the plasma ignition highly modifies the working gas flow field in the atmospheric air.…”

Section: Solution Evaporation Induced By Capsmentioning

confidence: 99%