Open AccessHigh-current arc discharge in air
Author(s) -
A. N. Bocharov,
E. A. Mareev,
Н. А. Попов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2100/1/012031
Subject(s) - pinch , shock wave , mechanics , electric arc , radius , current (fluid) , arc (geometry) , plasma , atmospheric pressure , electric discharge , atomic physics , range (aeronautics) , amplitude , materials science , physics , meteorology , thermodynamics , electrode , optics , geometry , computer security , mathematics , quantum mechanics , computer science , nuclear physics , composite material
Computational model of high-current pulsed arc discharge in air is proposed. This is, in general, two-dimensional model with taking into account gas dynamics of the discharge channel, real air thermodynamics in a wide range of pressure and temperature, electrodynamics of the discharge including pinch effect, and radiation. The developed model was applied to simulate the electric discharge in air for the currents of 1 - 250 kA and characteristic rise times in 13 - 25 µs, and results of calculations were compared with experimental ones. It was concluded that most of characteristics of the discharge are predicted well. Namely, arc column radius and shock wave position agree well with experimental data for all current amplitudes and rise times considered. Radial distributions of temperature and electron density also satisfactorily agree with experimental data. It was found that pinch effect should be considered for currents higher than 100 kA.