Crossing shock wave-turbulent boundary layer interactionsThree-dimensional interactions between crossing shock waves generated by symmetric sharp fins and a turbulent boundary layer on a flat plate are investigated experimentally and theoretically at Mach number 2.95 and freestream unit Reynolds number 1.96 x 10 to the 7th/ft. The incoming boundary layer has a thickness of 4 mm at the location of the fin leading edges. A comparison of experimental and computational results for two sets of fin angles (11 x 11 and 9 x 9 deg) shows general agreement with regard to surface pressure measurements and surface streamline patterns. The principal feature of the streamline structure is a collision of counterrotating vortical structures emanating from near the fin leading edges and meeting at the geometric centerline of the interaction.
Document ID
19910034771
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Narayanswami, N. (Rutgers Univ. New Brunswick, NJ, United States)
Knight, D. D. (Rutgers University New Brunswick, NJ, United States)
Bogdonoff, S. M. (Princeton University NJ, United States)
Horstman, C. C. (NASA Ames Research Center Moffett Field, CA, United States)