Open AccessNumerical simulations of nanosecond discharge in gas-dynamic flows
Author(s) -
E. A. Ermakov,
И. Э. Иванов,
I. A. Kryukov,
И. В. Мурсенкова,
I. A. Znamenskaya
Publication year - 2020
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 - 10.1088/1742-6596/1647/1/012015
Subject(s) - nanosecond , mechanics , voltage , vortex , streamer discharge , electric discharge in gases , flow (mathematics) , materials science , computer simulation , nitrogen gas , dynamic pressure , atomic physics , optics , nitrogen , physics , laser , quantum mechanics
Numerical simulations were performed of the nanosecond high-voltage breakdown in nitrogen at a voltage of 25–35 kV in the sub-centimeter discharge gaps. The streamer configurations were studied at two constant pressures, as well as at the radially varying pressure, simulating the pressure distribution in the axial region of the vortex “columnar” gas-dynamic flow. In each case, the characteristic parameters and propagation velocities of the primary and secondary streamers were calculated. It was ascertained that the law of pressure change in the radial direction strongly affects the spatial structure of the negative streamer.