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Modeling an increase in the lift and aerodynamic efficiency of a thick Göttingen airfoil with optimum arrangement

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Abstract

The Reynolds equations closed using the Menter shear-stress-transfer model modified with allowance for the curvature of flow line have been numerically solved jointly with the energy equation. The obtained solution has been used to calculate subsonic flow (at M = 0.05 and 5° angle of attack) past a thick (24% chord) Göttingen airfoil with variable arrangement of a small-sized (about 10% chord) circular vortex cell with fixed distributed suction Cq = 0.007 from the surface of a central body. It is established that the optimum arrangement of the vortex cell provides a twofold decrease in the bow drag coefficient Cx, a threefold increase in the lift coefficient Cy, and an about fivefold increase in the aerodynamic efficiency at Re = 105 in comparison to the smooth airfoil.

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Authors and Affiliations

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

    S. A. Isaev, A. G. Sudakov, A. E. Usachov & V. B. Kharchenko

Authors
  1. S. A. Isaev
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  2. A. G. Sudakov
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  3. A. E. Usachov
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  4. V. B. Kharchenko
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Correspondence to S. A. Isaev.

Additional information

Original Russian Text © S.A. Isaev, A.G. Sudakov, A.E. Usachov, V.B. Kharchenko, 2015, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 41, No. 11, pp. 103–110.

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Isaev, S.A., Sudakov, A.G., Usachov, A.E. et al. Modeling an increase in the lift and aerodynamic efficiency of a thick Göttingen airfoil with optimum arrangement. Tech. Phys. Lett. 41, 561–564 (2015). https://doi.org/10.1134/S1063785015060061

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  • DOI: https://doi.org/10.1134/S1063785015060061

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