Controlling the structure of a glow discharge by supersonic gas flow
The effect of supersonic gas flow on glow discharge characteristics in interelectrode space is studied. First, gas outflow through a Laval nozzle with a central body was simulated: gas particle density distributions, gas flow velocity, Mach number, and temperature were obtained. Next, these profiles...
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Veröffentlicht in: | Physics of plasmas 2022-12, Vol.29 (12) |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | The effect of supersonic gas flow on glow discharge characteristics in interelectrode
space is studied. First, gas outflow through a Laval nozzle with a central body was
simulated: gas particle density distributions, gas flow velocity, Mach number, and
temperature were obtained. Next, these profiles were used for numerical calculations of
the parameters of a transverse glow discharge within the framework of an extended fluid
description of the plasma. As a result, it was found that the cathode zones can both
shrink and stretch depending on the parameters of the supersonic gas flow. The latter
creates an inhomogeneous gas density in the interelectrode region and thereby affects the
value of E/N, which determines the electrical characteristics of the discharge. Numerical
simulation results are confirmed by experimental data. |
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ISSN: | 1070-664X 1089-7674 |
DOI: | 10.1063/5.0093725 |