Abstract
Numerical flowfields around a scramjet inlet model are simulated and analyzed. The present inlet flowfield is characterized by thick boundary-layer ingestion and strong viscous/inviscid interaction because of a combined effect of high hypersonic freestream Mach and low Reynolds numbers. Shock-induced separation further enlarges regions of viscous flows which occupy most of the inlet flowfield. Results obtained from the computations with the PARC code developed for ideal gas are presented for several 2D cases at various hypersonic Mach numbers ranging from 10 to 25, and two 3D simulations at Mach numbers of 12 and 19 are also discussed. Comparison between computation and experiment is made in terms of pressure distributions at the wall center line. Large discrepancy is observed and may be partially attributed to the lack of real gas and/or 3D effects in the simulation as well as to the uncertainty of the experiment.
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