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Thermophysics and Aeromechanics

, Volume 26, Issue 2, pp 165–178 | Cite as

Modification of turbulent airfoil section flow using a combined control action

  • V. I. KornilovEmail author
  • I. N. Kavun
  • A. N. Popkov
Article
  • 4 Downloads

Abstract

Both numerically and experimentally, the possibility of using a combined method to control the incompressible turbulent boundary layer on a symmetric airfoil section of 12-% relative thickness implemented via the blowing/suction of air through a finely perforated section provided on the wing surface part was examined. The study was performed at Reynolds number Rec = 0.7·106 in the range of angles of attack α = −6 ÷ 6°. The mechanism of action of this flow control method on the aerodynamic characteristics of the wing was identified. An ambiguous pattern of the effect due to blowing/suction from the viewpoint of ensuring a maximum lift, a gain in wing lift-to-drag ratio, and a reduction of wing aerodynamic drag was revealed.

Key words

airfoil section turbulent boundary layer finely perforated sections blowing/suction aerodynamic drag lift force lift-to-drag ratio 

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Copyright information

© V.I. Kornilov, I.N. Kavun, and A.N. Popkov 2019

Authors and Affiliations

  1. 1.Khristianovich Institute of Theoretical and Applied Mechanics SB RASNovosibirskRussia

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