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Towards improving efficiency of control for blowing into a boundary layer through a permeable wall

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Abstract

The results of experimental and numerical investigations of the efficiency of control by an incompressible turbulent boundary layer with the help air blowing through a permeable wall fabricated with maintenance of most of the necessary requirements for the quality and configuration of microapertures and having a low effective roughness are analyzed. Various cases of modeling the process of air blowing into the boundary layer through a specified hi-tech finely perforated surface are considered, and the data for average parameters and characteristics of turbulence of the flow types under investigation are presented. A substantial decrease in the skin-friction coefficient along the model length, which can achieve 90% with increasing the blowing coefficient, is shown. The estimate of the energy consumption for the process of blowing under terrestrial conditions testifies to the high potential of this method of control capable to provide 4–5% gain in the total aerodynamic drag of a simple modeling configuration.

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Authors and Affiliations

  1. Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    V. M. Fomin, V. I. Kornilov & A. V. Boiko

Authors
  1. V. M. Fomin
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  2. V. I. Kornilov
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  3. A. V. Boiko
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Corresponding author

Correspondence to V. I. Kornilov.

Additional information

Original Russian Text © V.M. Fomin, V.I. Kornilov, A.V. Boiko, 2016, published in Doklady Akademii Nauk, 2016, Vol. 469, No. 5, pp. 567–570.

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Fomin, V.M., Kornilov, V.I. & Boiko, A.V. Towards improving efficiency of control for blowing into a boundary layer through a permeable wall. Dokl. Phys. 61, 399–402 (2016). https://doi.org/10.1134/S1028335816080073

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  • DOI: https://doi.org/10.1134/S1028335816080073

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