Accession Number : ADA138722

Title :   Theoretical Investigation of Three-Dimensional Shock Wave-Turbulent Boundary Layer Interactions. Part 2.

Descriptive Note : Annual interim rept. 1 Oct 82-30 Sep 83,

Corporate Author : RUTGERS - THE STATE UNIV NEW BRUNSWICK N J DEPT OF MECHANICAL INDUSTRIAL AND AEROSPACE ENGINEERING

Personal Author(s) : Knight,D D

PDF Url : ADA138722

Report Date : Dec 1983

Pagination or Media Count : 71

Abstract : The focus of the research effort is the understanding of three-dimensional shock wave-turbulent boundary layer interactions. The approach uses the full mean compressible Navier-Stokes equations with turbulence incorporated through the algebraic turbulent eddy viscosity model of Baldwin and Lomax. During the present year of the research effort, the three-dimensional shock boundary layer interaction generated by a 10 deg sharp fin has been computed at Mach 3 for a Reynolds number 280000. These results, together with previous computations of the same configuration at Reynolds number = 930000, are compared with experimental data for pitot pressure and yaw angle. The agreement with the experimental data is good, and the theory accurately predicts the recovery of the boundary layer downstream of the interaction of Reynolds number = 280000. The computed flowfield is employed to analyze the structure of the 3-D interaction through contour plots of flow variables. Also, during the present year, the investigation of the 2-D turbulent supersonic compression corner at Mach 3 was completed. The relaxation modification to the Baldwin-Lomax model was found to yield reasonably accurate predictions of the upstream propagation of the surface for the Reynolds number range investigated. An additional computation at Mach 2 was performed, and the results were in general in agreement with the previous conclusions. (Author)

Descriptors :   *Turbulent boundary layer, *Shock waves, Three dimensional flow, Interactions, Navier Stokes equations, Flow fields, Thickness, Reynolds number, Supersonic flow

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE