STRUCTURE OF SEPARATED FLOW IN THE REATTACHMENT REGION FOR SUPERSONIC FLOW OVER COMPRESSION CORNERS OF VARIOUS CONFIGURATIONS
V. I. Zapryagaev, I. N. Kavun, L. P. Trubitsyna
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: supersonic flow, compression corner, separation, Görtler vortice, reattachment heat transfer
Abstract
Results of a combined computational and experimental study of the vortex structure in the reattachment region of a separated flow at a freestream Mach number M∞ = 6 are presented. Three compression corner configurations are examined: a compression corner formed by two flat surfaces, the same compression corner with sidewalls, and an axisymmetric model. The compression angle is identical in all cases, equal to 30°. The model geometry is found to significantly affect the structure and parameters of the vortex flow in the reattachment region. This specifically pertains to the presence or absence of longitudinal Görtler-type wall vortices, their geometric dimensions, and the magnitude of the force and thermal parameters in this region.
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