Analysis of Plasmadynamic Nanosecond-Range Processes in the Formation of Shock Waves from Pulsed Discharges
- Authors: Doroshchenko I.A.1, Znamenskaya I.A.1, Kuznetsov A.Y.1, Mursenkova I.V.1, Sysoev N.N.1
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Affiliations:
- Moscow State University
- Issue: Vol 63, No 5 (2018)
- Pages: 662-669
- Section: Gases and Liquids
- URL: https://journals.rcsi.science/1063-7842/article/view/201321
- DOI: https://doi.org/10.1134/S1063784218050067
- ID: 201321
Cite item
Abstract
We have studied the dynamics of the plasma glow of pulsed discharges (sliding surface discharge and combined volume discharge with plasma electrodes) in the nanosecond range (100–12 000 ns) in stationary air and in the flow behind the front of a plane shock wave with Mach numbers 1.7–5.0 in the shock tube channel. The temporal characteristics of the flow, the radiation spectra, and the discharge currents in air are compared in the pressure range 5–150 Torr, a pulsed voltage of 20–30 kV, and a current of about 1 kA. It is shown that the time of current under various conditions does not exceed 400 ns, and the duration of the glow can reach a few microseconds. It is shown that as a result of energy supply near the planar shock wave front, the decay of discontinuities occurs with the formation of shock waves and contact surfaces. The positions of the plasma glow regions are compared with the positions of discontinuity surfaces of numerically calculated gasdynamic parameters in the flow.
About the authors
I. A. Doroshchenko
Moscow State University
Author for correspondence.
Email: doroshchenko93@gmail.com
Russian Federation, Moscow, 119234
I. A. Znamenskaya
Moscow State University
Email: doroshchenko93@gmail.com
Russian Federation, Moscow, 119234
A. Yu. Kuznetsov
Moscow State University
Email: doroshchenko93@gmail.com
Russian Federation, Moscow, 119234
I. V. Mursenkova
Moscow State University
Email: doroshchenko93@gmail.com
Russian Federation, Moscow, 119234
N. N. Sysoev
Moscow State University
Email: doroshchenko93@gmail.com
Russian Federation, Moscow, 119234