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Controlling the Flow past a Semicircular Airfoil at Zero Angle of Attack Using Slot Suction in One or Two Vortex Cells for Attaining Extremal Lift

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Abstract

Calculations using multiblock computational technologies and a model of shear-stress transport modified with allowance for the curvature of streamlines in turbulent airflow were performed at a zero angle of attack for a semicircular airfoil containing one or two surface vortex cells with slot suction. The results showed evidence of stabilization of a nearly undetached flow and attainment of an extremal lift of C y = 5.2 and a lift-to-drag ratio of K = 24 with allowance for energy losses for suction in the vortex cells.

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Authors and Affiliations

  1. Kazan National Research Technical University, Kazan, Tatarstan, 420111, Russia

    S. A. Isaev & I. A. Popov

  2. St. Petersburg State University of Civil Aviation, St. Petersburg, 196210, Russia

    S. A. Isaev, P. A. Baranov & A. G. Sudakov

  3. Moscow Complex, Central Aerohydrodynamic Institute, Moscow, 107005, Russia

    A. E. Usachov

Authors
  1. S. A. Isaev
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  2. P. A. Baranov
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  3. A. G. Sudakov
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  4. I. A. Popov
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  5. A. E. Usachov
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Corresponding author

Correspondence to S. A. Isaev.

Additional information

Original Russian Text © S.A. Isaev, P.A. Baranov, A.G. Sudakov, I.A. Popov, A.E. Usachov, 2017, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2017, Vol. 43, No. 24, pp. 53–58.

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Isaev, S.A., Baranov, P.A., Sudakov, A.G. et al. Controlling the Flow past a Semicircular Airfoil at Zero Angle of Attack Using Slot Suction in One or Two Vortex Cells for Attaining Extremal Lift. Tech. Phys. Lett. 43, 1115–1117 (2017). https://doi.org/10.1134/S1063785017120203

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  • DOI: https://doi.org/10.1134/S1063785017120203

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