Technical Physics Letters

, Volume 43, Issue 12, pp 1115–1117 | Cite as

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

  • S. A. Isaev
  • P. A. Baranov
  • A. G. Sudakov
  • I. A. Popov
  • A. E. Usachov
Article
  • 1 Downloads

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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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • S. A. Isaev
    • 1
    • 2
  • P. A. Baranov
    • 2
  • A. G. Sudakov
    • 2
  • I. A. Popov
    • 1
  • A. E. Usachov
    • 3
  1. 1.Kazan National Research Technical University, KazanTatarstanRussia
  2. 2.St. Petersburg State University of Civil AviationSt. PetersburgRussia
  3. 3.Moscow Complex, Central Aerohydrodynamic InstituteMoscowRussia

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