DIRECT-CURRENT DISCHARGE BETWEEN A METAL ANODE AND A LIQUID NONMETALLIC CATHODE

• Published in: Journal of applied mechanics and technical physics Vol. 63; no. 5; pp. 746 - 756
• Main Authors: Petryakov, S. Yu, Mirkhanov, D. N., Gaisin, A. F., Basyrov, R. Sh, Kashapov, N. F.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.11.2022; Springer Nature B.V
• Subjects: Aluminum; Applications of Mathematics; Cathodes; Classical and Continuum Physics; Classical Mechanics; Combustion; Electric discharges; Electric field strength; Emission analysis; Fluid- and Aerodynamics; Low temperature; Mathematical Modeling and Industrial Mathematics; Mathematical models; Mechanical Engineering; Physics; Physics and Astronomy; Plasma composition; Water purification; electric discharge; plasma–liquid systems; numerical methods; low-temperature plasma
• ISSN: 0021-8944; 1573-8620
• DOI: 10.1134/S0021894422050029

The characteristics and mathematical modeling of the behavior of a low-temperature direct-current electric discharge plasma ignited between an aluminum anode and an electrolytic cathode (3% NaCl solution in purified water) at atmospheric pressure are investigated. The discharge is ignited by immersing the metal anode into the electrolytic cathode. The types and forms of plasma structures generated in the interelectrode gap are considered. The results of high-speed recording of the discharge breakdown and combustion are presented. The electrophysical parameters of the discharge, including pulsations and current/voltage fluctuations are studied. The emission spectroscopy method is used to determine the discharge emission spectrum, plasma composition, electron concentration, and temperature of heavy plasma components. The heat patterns of the surface of liquid nonmetallic and metallic electrodes in the discharge combustion zone are considered. The results of numerical simulation of electric field strength and the initial stage of the discharge are presented.