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Nonlinear effects of pulsed periodic energy supply on shock wave structure of transonic flow around airfoils

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Thermophysics and Aeromechanics Aims and scope

Abstract

The work deals with an investigation of possibilities of controlling the aerodynamic characteristics of airfoils with the aid of external local pulsed-periodic energy supply at transonic flight regimes. The alteration of flow structure near a symmetric airfoil and its wave drag has been studied on the basis of a numerical solution of two-dimensional nonstationary gas dynamics equations versus the energy supply period, the localization and shape of the energy supply zone. The energy supply upstream of the closing shock in the immediate proximity of the contour in the zones extended along it is found to result in a considerable reduction of the profile wave drag. The nature of such a drag reduction is elucidated. The existence of a limiting frequency of energy supply is established.

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Authors and Affiliations

  1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia

    S. M. Aulchenko, V. P. Zamuraev & A. P. Kalinina

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  1. S. M. Aulchenko
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  2. V. P. Zamuraev
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  3. A. P. Kalinina
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Aulchenko, S.M., Zamuraev, V.P. & Kalinina, A.P. Nonlinear effects of pulsed periodic energy supply on shock wave structure of transonic flow around airfoils. Thermophys. Aeromech. 13, 173–181 (2006). https://doi.org/10.1134/S0869864306020028

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  • DOI: https://doi.org/10.1134/S0869864306020028

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