An investigation of shock/turbulent boundary layer bleed interactionsA numerical investigation was conducted to determine the effect of bleed on oblique shock wave/turbulent boundary layer interactions. The numerical solution to the compressible Navier-Stokes equations reveal the flow details throughout the interaction zone and inside the normal bleed slot. Results are presented for an incident oblique shock of sufficient strength to cause boundary layer separation in the absence of bleed. Bleed is applied across the shock impingement location over a range of bleed mass flow rates corresponding to different values of plenum pressures. The results indicate a complex flow structure with large variations in both normal and tangential flow velocities across the bleed slot. The flow entrainment into the slot is accompanied by an expansion-compression wave system with a bow shock originating inside the bleed slot. Increasing the bleed mass flow by decreasing the plenum pressure caused an initial decrease then a later increase in the boundary layer momentum and displacement thickness downstream of the interaction.
Document ID
19920071384
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hamed, A. (NASA Lewis Research Center Cleveland, OH, United States)
Shih, S. H. (NASA Lewis Research Center Cleveland, OH, United States)
Yeuan, J. J. (Cincinnati, University OH, United States)