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Thermophysics and Aeromechanics

2002 year, number 1

Aerodynamics of swirled gas flow in plasmatorch channel provided with diaphragm

V.M. Lelevkin and V.F. Semenov
Kirghiz-Russian Slav University, Bishkek, Kirghizia
Pages: 37-53


Basing on the equilibrium magnetogasdynamic model of plasma the computation of the gas (argon) flow and heating in the initial interval of a cylindrical channel provided with a diaphragm depending on the variation of the current strength, geometric parameters of the diaphragm, gas flow rate and torque has been carried out. The peculiarities of the behavior of the arc flow characteristics in the channels have been studied, which are related to a sudden variation of the cross section with and without regard for gas swirl. It is shown that for the localization of the plasma arc flow in the region near the axis it is necessary to mount a diaphragm also in the outlet cross section of the channel along with the gas swirl. The computed results agree qualitatively with experimental data.