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Estimation of the lifetime of a trapped vortex in a circular cavern on a semicircular airfoil streamlined at a zero angle of attack after switching off slot suction

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Abstract

The restructuring of the periodic structure of a turbulent streamline for a semicircular airfoil at a zero angle of attack with a system of slot suction from the circular cavern switched off is calculated. Multiblock numerical methods are applied for solution of Reynolds-averaged nonstationary Navier–Stokes equations closed using the modified shear-stress transfer model taking into account flow line curvature. The lifetime of a trapped vortex in a circular cavern is estimated.

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Authors and Affiliations

  1. Kazan National Research Technological University, Kazan, Tatarstan, 420015, 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. Research and Development Moscow Complex of 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. 7, pp. 32–39.

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Isaev, S.A., Baranov, P.A., Sudakov, A.G. et al. Estimation of the lifetime of a trapped vortex in a circular cavern on a semicircular airfoil streamlined at a zero angle of attack after switching off slot suction. Tech. Phys. Lett. 43, 338–340 (2017). https://doi.org/10.1134/S1063785017040101

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  • DOI: https://doi.org/10.1134/S1063785017040101

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