6. Physics of a Fluid, Neutral and Ionized Gases

APPLICATION OF AIR MICROBLOWING THROUGH A POROUS WALL FOR SKIN FRICTION REDUCTION ON A FLAT PLATE

Vladimir I. Kornilov
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
kornilov@itam.nsc.ru
Andrey V. Boiko
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS Novosibirsk, Russian Federation
2. Tyumen State Oil and Gas University Tyumen, Russian Federation
boiko@itam.nsc.ru
The material was received by the Editorial Board: 05.07.2010
The effect of air microblowing through a porous wall on the properties of a turbulent boundary layer formed on a flat plate in an incompressible flow is studied experimentally. The Reynolds number based on the momentum thickness of the boundary layer in front of the porous insert is 3 900. The mass flow rate of the blowing air per unit area was varied within Q = 0−0.0488 кg/s/m2 . A consistent decrease in local skin friction, reaching up to 45−47 %, is observed to occur at the maximal blowing air mass flow rate studied.

Keywords:
microblowing, porous wall, incompressible turbulent boundary layer, skin friction, flat plate. 
УДК 532.526.4 + 532.546.6 + 532.526.72

APPLICATION OF AIR MICROBLOWING THROUGH A POROUS WALL FOR SKIN FRICTION REDUCTION ON A FLAT PLATE
References: Kornilov V. I., Boiko A. V. APPLICATION OF AIR MICROBLOWING THROUGH A POROUS WALL FOR SKIN FRICTION REDUCTION ON A FLAT PLATE. Vestnik NSU. Series: Physics. 2010, vol. 5, no. 3. P. 38–46 (in Russ.). DOI: 10.54362/1818-7919-2010-5-3-38-46