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Occurrence of periodic regimes in steady supersonic MHD flows due to loss of electrical conductivity of medium. (English. Russian original) Zbl 0594.76107
Fluid Dyn. 20, 613-623 (1985); translation from Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza 1985, No. 4, 138-149 (1985).
A study is made of the features of supersonic magnetohydrodynamic flows due to the vanishing of the electrical conductivity of the gas as a result of its cooling. The study is based on the example of the exhausting from an expanding nozzle of gas into which a magnetic field perpendicular to the plane of the flow is initially frozen.
It is demonstrated analytically on the basis of a qualitative model and by numerical experiment that besides the steady flow there is also a periodic regime in which a layer of heated gas of electric arc type periodically separates from the conducting region in the upper part of the nozzle.

MSC:
76W05 Magnetohydrodynamics and electrohydrodynamics
76J20 Supersonic flows
76M99 Basic methods in fluid mechanics
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