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Institut Vysokikh Temperatur Akademii Nauk Sssr

Grigory Alexandrovich Ljubimov

Alexandr Nikolaevich Popov

Stanislav A Medin

Valentin I Kovbasjuk

Vladilen I Maximenko

Samuil M Gorlin

Valentin A Bitjurin

Boris Vladimirovich Parfenov

Valentin Ostapovich German

German Mikhailovich Schegolev

Alexandr E Barshak

Jury Pavlovich Kukota

A magnetohydrodynamic device having a duct for a conducting gas to flow at an angle with the direction of the magnetic field induction vector. The duct is situated in the magnetic system and is provided with a plurality of electrodes adapted to interact electrically with the gas, whereas the cross-sectional shape of the duct working space is bounded by a closed contour formed by a curve inscribed into a rectangle having its sides a.gtoreq.b, while the minimum radius R of curvature of said curve is related to the distance x from the entry to the duct for the conducting gas to flow, to the cross-section under consideration by the following formula: ##EQU1## where P.sub.o and S.sub.o stand, respectively, for the perimeter and cross-sectional area of the duct 1 at the entry thereof, and 0.5.ltoreq..alpha..ltoreq.1.

Magnetohydrodynamic device

An electrode structure for use in an electric discharge device includes a fluid-permeable discharge chamber; a flow of gas seeded with actively emissive elements is delivered to the interior surface of said discharge chamber for a distributed electric discharge to be maintained thereat. The discharge chamber is fitted with an opening providing for a discharge channel outlet. Service life of the proposed electrode structure reaches several thousands of hours, which is possible due to erosion inhibition at the discharge surface. Simplicity of design, reasonable weight and dimensions of the electrode structure renders it suitable for use as an electrode in plasmatrons employed in chemical industry and metallurgy, as well as an electrode for electric arc melting furnaces. The electrode structure can also be used as a welding electrode, and as an electrode for MHD generators and other electric discharge devices with electric arc heating process being used therein.

Electrode structure for an electric discharge device

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Moscow, Russia

Grigory Alexandrovich Ljubimov