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TsAGI Science Journal

ISSN Imprimir: 1948-2590
ISSN On-line: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2014011119
pages 843-868

INFLUENCE OF HEATING THE FLAT PLATE NOSE PART ON THE INTEGRAL AND STATISTICAL CHARACTERISTICS OF THE BOUNDARY LAYER

Vladimir Mikhailovich Litvinov
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky str. 1, Zhukovsky, Moscow Region, 140180 Russia
Aleksandr Aleksandrovich Uspenskii
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky str. 1, Zhukovsky, Moscow Region, 140180 Russia

RESUMO

The results of an experimental investigation on the effect of heating the nose part of a flat plate model in relation to the development of the boundary layer and the laminar-turbulent transition are presented. On the basis of processing the velocity and temperature profiles in the laminar, transitional, and turbulent flow regions, the integral and statistical characteristics of the boundary layer at different heating regimes are determined. The influence of heating on the reduction of the local and total friction coefficients is estimated. The effect of the friction coefficient reduction is determined by the laminar-to-turbulent transition delay. The experiments were carried out in the T-36I wind tunnel at TsAGI at a flow velocity of 57 m/s and a flow turbulence of 0.06%.