Abstract
A numerical and experimental study of receptivity of the viscous shock layer on a flat plate aligned at an angle of attack to external acoustic perturbations is performed. Density and pressure fluctuations are measured in experiments at the free-stream Mach number M ∞ = 21 and Reynolds number Re 1 = 6·10 5 m −1. Direct numerical simulations of receptivity of the viscous shock layer to external acoustic perturbations in wide ranges of the governing parameters are performed by solving the Navier-Stokes equations with the use of high-order shock-capturing schemes. The calculated intensities of density and pressure fluctuations are found to be in good agreement with experimental data. Results of the study show that entropy-vortex disturbances dominate in the shock layer at small angles of attack, whereas acoustic perturbations prevail at angles of attack above 20°.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 51, No. 4, pp. 39–47, July–August, 2010.
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Maslov, A.A., Mironov, S.G., Poplavskaya, T.V. et al. Wave processes in the shock layer on a flat plate at an angle of attack. J Appl Mech Tech Phy 51, 482–488 (2010). https://doi.org/10.1007/s10808-010-0064-4
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DOI: https://doi.org/10.1007/s10808-010-0064-4