Dynamic Characteristics of a Microhollow Cathode Sustained Discharge with Split Third Electrodes for Potential Flow Application to Flow Velocimetry

doi:10.1088/0256-307X/31/9/095203

Chin. Phys. Lett.

2014, Vol. 31

Issue (09): 095203 DOI: 10.1088/0256-307X/31/9/095203

PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES

Dynamic Characteristics of a Microhollow Cathode Sustained Discharge with Split Third Electrodes for Potential Flow Application to Flow Velocimetry

Sharmin Sultana¹, Jichul Shin^2**

¹Institute of E-vehicle Technology, University of Ulsan, Ulsan 680-749, Korea
²Department of Aerospace Engineering, University of Ulsan, Ulsan 680-749, Korea

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Sharmin Sultana, Jichul Shin 2014 Chin. Phys. Lett. 31 095203

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Abstract The dynamic behavior of a microhollow cathode sustained discharge with split third electrodes is experimentally investigated. The sustained discharge swells isotropically in the presence of a small amount of argon gas flow that is not clearly detectable with a conventional single third electrode. At high flow rates, the sustained discharge transitions to a fast-moving constricted discharge with an arc shape. The modified discharge structure causes a shift in current distribution over the third electrodes, and the current peak location varies linearly with the flow rate over a certain flow range. Such linear behavior may be applied to in situ flow velocity measurement.

Published: 22 August 2014

PACS:	52.30.-q	(Plasma dynamics and flow)
	52.80.Hc	(Glow; corona)
	52.70.Ds	(Electric and magnetic measurements)
	52.77.-j	(Plasma applications)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/9/095203 OR https://cpl.iphy.ac.cn/Y2014/V31/I09/095203

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	Sharmin Sultana
	Jichul Shin

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