Transformation of wing boundary layer in the filament wake

Abstract

Results of an experimental study of the air flow past a straight-wing model in a low-turbulence wind tunnel are reported. The influence of a turbulent wake due to a thin filament on the structure of boundary layer on the model surface was examined. Flow visualization in boundary layer, hot-wire measurements of flow velocity, and also measurements of the amplitude and frequency spectra of flow pulsations, were performed. The wake substantially modified the boundary layer flow pattern: the separation bubble disappeared from the flow, and the formation of longitudinal structures was observed.

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References

  1. 1.

    A.V. Dovgal, Yu.B. Zanin, and V.V. Kozlov, Global response of laminar flow separation to local flow perturbations (review), Thermophysics and Aeromechanics, 2012, Vol. 19, No. 1, P. 1–8.

    Article  ADS  Google Scholar 

  2. 2.

    E.U. Repik and Yu.P. Sosedko, Flow Turbulence Level Control, Fizmatlit, Moscow, 2002.

    Google Scholar 

  3. 3.

    E.P. Dyban and E.Ya. Epik, Heat and Mass Transfer, and Hydrodynamics of Turbulized Flows, Naukova Dumka, Kiev, 1985.

    Google Scholar 

  4. 4.

    B.Yu. Zanin and V.V. Kozlov, Vortical Structures in Subsonic Separated Flows, Guide for Students, Novosibirsk State University, Novosibirsk, 2011.

    Google Scholar 

  5. 5.

    G.M. Zharkova, B.Yu. Zanin, V.N. Kovrizhina, and A.P. Brylyakov, Free stream turbulence effect on the flow structure over the finite span straight wing, J. Visualization, 2002, Vol. 5, No. 2, P. 169–176.

    Article  Google Scholar 

  6. 6.

    A.P. Brylyakov, G.M. Zharkova, B.Yu. Zanin, V.N. Kovrizhina, and D.S. Sboev, Flow separation on a straight wing at a high level of free-stream turbulence, Uch. Zapiski TsAGI, 2004, Vol. 35, Nos. 1–2, P. 57–62.

    Google Scholar 

  7. 7.

    V.I. Kornilov, G. Pailhas, and B. Aupoix, Specific features of the formation of a boundary layer on an airfoil in an asymmetric wake, Thermophysics and Aeromechanics, 1999. Vol. 6, No. 2, P. 193–209.

    Google Scholar 

  8. 8.

    R.F. Huang and S.U. Wu, Effects of cylinder wake on separated boundary layer of a wing, AIAA J., 2007, Vol. 45, No. 1, P. 247–256.

    Article  ADS  Google Scholar 

  9. 9.

    M.V. Mikhaelis, B.Yu. Zanin, and M.M. Katasonov, Effect of turbulent wake on the flow separation on a wing model, Vestnik NGU, Ser. Fizika, 2011, Vol. 6, Iss. 1, P. 50–59.

    Google Scholar 

  10. 10.

    V.I. Kornilov, Three-Dimensional Turbulent Wall Flows in Corner Configurations, Russian Academy of Sciences, Novosibirsk, 2013.

    Google Scholar 

  11. 11.

    H. Schlichting, Boundary-Layer Theory, McGraw Hill, New York, 1959.

    Google Scholar 

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Correspondence to M. V. Mikhaelis.

Additional information

This work was financially supported by the Russian Foundation for Basic Research (Grant No. 13-08-00395) and by the Russian-Federation Presidential Foundation for the federal support of leading scientific schools (Grant NSh-2924.2014.1).

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Mikhaelis, M.V., Zanin, B.Y. & Katasonov, M.M. Transformation of wing boundary layer in the filament wake. Thermophys. Aeromech. 21, 693–700 (2014). https://doi.org/10.1134/S0869864314060031

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Key words

  • turbulent wake
  • flow past model wing
  • longitudinal structures
  • boundary-layer separation
  • laminar-turbulent transition