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Effect of local heat supply to a turbulent boundary layer on the friction

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Abstract

The results of calculating a supersonic turbulent boundary layer on a flat plate in the presence of thermal energy supply to the boundary layer are presented. Two methods of energy supply are considered: heating a local interval of the surface, which is otherwise thermally insulated and using a local volume heat source. It is shown that for the same amount of heat supplied to the gas volume heating leads, under certain conditions, to greater friction reduction than the surface heating. Localization of the energy supply zone leads to the intensification of the viscous drag reduction effect and to a greater decrease in the local friction coefficient, which extends a considerable distance downstream.

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Authors
  1. A. V. Kazakov
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  2. M. N. Kogan
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  3. A. P. Kuryachii
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Additional information

Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 1, pp. 48–56, January–February, 1997.

The work was carried out with financial support from the Russian Foundation for Fundamental Research (project No. 93-013-17600).

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Kazakov, A.V., Kogan, M.N. & Kuryachii, A.P. Effect of local heat supply to a turbulent boundary layer on the friction. Fluid Dyn 32, 39–45 (1997). https://doi.org/10.1007/BF02697935

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  • DOI: https://doi.org/10.1007/BF02697935

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