A computational-experimental analysis of the effectiveness of stationary distribution of air blowing-in through a perforated surface on the properties of a turbulent boundary layer being formed on an elongated axisymmetric body of revolution under the conditions of incompressible flow past it at the Reynolds number ReL = 4.39·106 has been made. The blowing-in coefficient Cb varied over the range 0–0.01397. The Reynolds number Re** based on the momentum thickness δ** upstream of the perforated section was equal to 5603. It is shown that with increase in the longitudinal coordinate up to a distance of 600 δ** from the region of blowing-in, a steady decrease in the local friction is observed whose maximum value attains 100% directly in the region of blowing at a maximum intensity of the latter. Under the indicated conditions, the total aerodynamic drag of the body of revolution can be reduced by no less than 8.7%.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 95, No. 1, pp. 134–144, January–February, 2022.
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Kornilov, V.I., Shkvar, E.A. & Popkov, A.N. Influence of Distributed Blowing-In on a Turbulent Boundary Layer on a Body of Revolution. J Eng Phys Thermophy 95, 132–141 (2022). https://doi.org/10.1007/s10891-022-02461-7
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DOI: https://doi.org/10.1007/s10891-022-02461-7