The Influence of Vortex Formation on the Electrical Characteristics of Argon Plasma in a Rotating Gliding Arc Discharge

Mohan Pathak, R and Rao, L (2024) The Influence of Vortex Formation on the Electrical Characteristics of Argon Plasma in a Rotating Gliding Arc Discharge. In: 2023 International Conference on Advances in Condensed Matter Physics, ICACMP 2023, 11 October 2024through 13 October 2024, Hyderabad.

PDF jou_phy_con_ser_2778_1_2024 - Published Version Download (1MB)

Abstract

Rotating Gliding Arc (RGA) discharge exhibits the characteristics of non-thermal plasma states when operated at atmospheric pressure with argon (Ar), and this study elucidates its properties. Experimental findings from an alternating current RGA plasma generator reveal a strong dependence of current density, which increases with higher discharge current and gas flow rates (Q). This research investigates the impact of swirling on the electrical properties of argon (Ar) plasma within RGA. The study focuses on two distinct flow conditions: TRANSFLOW at 5 SLPM and HIGH-TURBFLOW at 50 SLPM. The examination incorporates two different swirl hole diameters, namely 1.6 mm and 1 mm, to analyze their influence on the electrical characteristics of the system. Based on these flow regimes different types of discharge i.e., glow and spark are get formed and their characteristics are studied well. High-speed imaging and electrical measurements were employed to acquire insights into the depth of the physics associated with the Ar plasma. Compared to 1.6 mm, Vt is higher for 1 mm for both the Q, i.e., for TRANS-FLOW at 5 SLPM and for HIGH TURB-FLOW at 50 SLPM. Finding shows that Vt increases from 1.2 ms-1 to 22 ms-1 for 1.6 mm and it increases from 2.5 ms-1 to 40 ms-1 for 1 mm. Vt nearly increased twice time when swirl hole diameter decreased from 1.6 mm to 1 mm. The average electric field (E) increases from 8 Vmm-1 to 15 Vmm-1 for 1.6 mm and from 11.8 Vmm-1 to 24 Vmm-1 for 1 mm. The linear fit R² ranges from 0.78 to 0.90. © Published under licence by IOP Publishing Ltd.

Item Type:	Conference Paper
Publication:	Journal of Physics: Conference Series
Publisher:	Institute of Physics
Additional Information:	The copyright for this article belongs to authors.
Keywords:	Argon; Electric arcs; Flow of gases; Vortex flow, Alternating current; Argon plasmas; Electrical characteristic; Gliding arc; Gliding arc plasmas; Hole diameter; Nonthermal plasma; Plasma state; Property; Vortex formation, Atmospheric pressure
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	19 Dec 2024 08:56
Last Modified:	19 Dec 2024 08:56
URI:	http://eprints.iisc.ac.in/id/eprint/85895

Actions (login required)

View Item