Publicado 6 números por año
ISSN Imprimir: 1948-2590
ISSN En Línea: 1948-2604
NUMERICAL SIMULATION OF THE EFFECT OF ACOUSTICWAVE INCLINATION ANGLE ON A HYPERSONIC BOUNDARY-LAYER RECEPTIVITY
SINOPSIS
Receptivity of a hypersonic boundary layer (free-stream Mach number M∞ = 6) is investigated in terms of numerical simulation of Navier-Stokes equations (direct numerical simulation) for twodimensional unsteady flows over a flat plate with a sharp leading edge. Physical mechanisms of the receptivity to two-dimensional monochromatic slow and fast acoustic waves within a wide range of inclination angles to the plate surface are considered. The shock wave, which is formed near the leading edge, produces a profound effect on the acoustic near-field and the receptivity process due to the viscous-inviscid interaction. Interaction of several factors (acoustic field, interference of acoustic waves with a shock wave, penetration of acoustic waves into the boundary layer, synchronization of acoustic waves with an unstable mode in the boundary layer) leads to a non-monotonic dependency of the receptivity level on the inclination angle of the acoustic wave at given parameters of the boundary layer.
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Soudakov Vitaly, Fedorov Alexander, Ryzhov Alexander, DNS and the theory of receptivity of a supersonic boundary layer to free-stream disturbances, Journal of Physics: Conference Series, 318, 3, 2011. Crossref
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Fedorov A. V., Ryzhov A. A., Soudakov V. G., Utyuzhnikov S. V., Receptivity of a high-speed boundary layer to temperature spottiness, Journal of Fluid Mechanics, 722, 2013. Crossref