Effect of Gas Dynamics on Discharge Modes and Plasma Chemistry in Rotating Gliding Arc Reactor

Ananthanarasimhan, J and Shivapuji, AM and Leelesh, P and Rao, L (2021) Effect of Gas Dynamics on Discharge Modes and Plasma Chemistry in Rotating Gliding Arc Reactor. In: IEEE Transactions on Plasma Science, 49 (2). pp. 502-506.

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Abstract

This article investigates the effect of gas flow rate on arc discharge mode and plasma chemistry in a nonmagnetic rotating gliding arc reactor. This article is conducted using oxygen as a plasma forming gas under transient (5 LPM), turbulent (25 LPM), and highly turbulent (50 LPM) flow conditions. The voltage-current characteristics reveal discharge modes, such as glow mode under transient flow glow-spark transition mode under turbulent flow , and spark mode under highly turbulent flow Arc completes full rotation under transient flow, whereas it is blown off before completing full rotation under turbulent flows. The captured optical emission lines of the discharge indicate domination of excitation reactions under glow and glow-spark transition modes and domination of both the excitation and electron impact ionization reactions under spark mode. These observations reveal that the gas dynamics changes the discharge mode of the rotating arc that in turn alters the plasma chemistry, which is a positive feature to promote specific reaction pathways. © 1973-2012 IEEE.

Item Type:	Journal Article
Publication:	IEEE Transactions on Plasma Science
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Electric arcs; Flow of gases; Gas dynamics; Glow discharges; Ionization of gases; Rotation; Transition flow; Turbulent flow, Electron impact-ionization; Excitation reactions; Optical emissions; Plasma chemistries; Plasma forming gas; Positive features; Reaction pathways; Voltage-current characteristics, Impact ionization
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	24 Feb 2023 04:58
Last Modified:	24 Feb 2023 04:58
URI:	https://eprints.iisc.ac.in/id/eprint/80451

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