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Abramov A.A.,Ne Zhukovskii Central Institute Of Aerohydrodynamics Tsagi | Butkovskii A.V.,Ne Zhukovskii Central Institute Of Aerohydrodynamics Tsagi
High Temperature | Year: 2010

The numerical solution of Boltzmann equation is used for investigating the Couette flow in a wide range of values of Knudsen number and velocity of the upper plate. The Knudsen number dependences of the energy flux to the lower plate, of the friction drag of the lower plate, and of the flux of normal momentum transferred to the lower plate are considered. It is demonstrated that the effect of nonmonotonicity at high values of Mach number is observed both for the friction drag and for the energy flux and normal momentum flux. © 2010 Pleiades Publishing, Ltd.


Efimov B.G.,Ne Zhukovskii Central Institute Of Aerohydrodynamics Tsagi | Inshakov S.I.,Ne Zhukovskii Central Institute Of Aerohydrodynamics Tsagi | Klimov A.M.,RAS Institute of Problems of Chemical Physics | Skvortsov V.V.,Ne Zhukovskii Central Institute Of Aerohydrodynamics Tsagi
High Temperature | Year: 2010

The investigations of the possibility of intensifying the processes of combustion in high-velocity flows of kerosene-air mixtures with the aid of electric discharges are used for studying the structure of flow and the distribution of products of plasma-chemical reactions behind a screen sloped toward the flow, with an auxiliary working medium in the droplet-gas and gas phases (kerosene, propane) being injected into the space under said screen. The experiments are performed at Mach number M = 2 and static pressure of 260 torr. The distribution of static and total pressure in the region behind the screen and the field of Mach number are obtained in the absence of discharge, and the distribution of kerosene under the screen and in the wake behind the screen is visualized. A discharge with a current of 1 A at a voltage of about 2 kV is initiated above and behind the screen. The experimental conditions and geometry are found, at which the discharge behind the screen is spatially distributed. For these conditions, the distribution of the products of plasmachemical reactions in the case of injection of kerosene and propane is studied. © 2010 Pleiades Publishing, Ltd.

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