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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.

76W05 Magnetohydrodynamics and electrohydrodynamics
76J20 Supersonic flows
76M99 Basic methods in fluid mechanics
Full Text: DOI
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