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A comprehensive analysis of turbulent boundary layer at air blowing through a microperforated surface

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1980
pages 1942-1945

V.I. Kornilov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS

A. V. Boiko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS

Dmitriy M. Markovich
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences (IT SB RAS), 1, Lavrentyev Ave., Novosibirsk, 630090, Russia; Department of Physics, Novosibirsk State University (NSU), 1, Pirogov Str., Novosibirsk, 630090, Russia; Institute of Power Engineering, Tomsk Polytechnic University (TPU), 30, Lenin Ave., Tomsk, 634050, Russia

Arthur V. Bilsky
Institute of Thermophysics, Siberian Branch of RAS, Lavrentyev Ave. 1, Novosibirsk, 630090, Russia

Oleg A. Gobyzov
Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences (IT SB RAS), 1 prospekt Akademika Lavrentieva, Novosibirsk, 630090, Russian Federation

V.M. Kovenya
Institute of Computational Technologies SB RAS 630090, Novosibirsk, Russia

A.S. Lebedev
Institute of Computational Technologies SB RAS 630090, Novosibirsk, Russia

A.V. Bazovkin
Institute of Computational Technologies SB RAS 630090, Novosibirsk, Russia

Sinopsis

A comprehensive experimental and numerical studies of the gradientless incompressible boundary layer modified by air blowing through a permeable (microperforated) wall was performed. Unlike the pioneering works of Hwang [3], the main objective of this work was to provide a detailed analysis of the boundary-layer characteristics over the permeable surface under the effect of blowing in order to make further improvements of the discussed boundary-layer control method possible. A consistent reduction of the local skin-friction coefficient over the permeable sample at various values of the blowing coefficient, reaching a maximum reduction of 70%, was shown. It was also established that air blowing can provide reduction of the plate total drag of about 4.5−5% even at comparatively low values of the blowing mass flow rate.

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