NUMERICAL SIMULATION OF BOUNDARY LAYER SEPARATION IN SUPERSONIC FLOW IN A RECTANGULAR CHANNEL
I.I. Mazhul’
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences (ITAM SB RAS), Novosibirsk, Russia
Keywords: supersonic flow, converging channel, flow structure, boundary layer separation, aspect ratio, wall temperature
Abstract
The characteristics of supersonic flow in a converging rectangular channel are numerically investigated as functions of the channel aspect ratio and wall temperature. The channel consists of a converging inlet followed by a constant-cross-section region. In the inlet, a compression wedge with an angle δ w = 13° generates a shock wave that induces boundary layer separation. Using the Navier-Stokes equations and the k-ω SST turbulence model, data on the flow structure and the characteristics of the separation zones are obtained at a Mach number M = 4.5 at the channel inlet.
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