Accession Number : AD0733974
Title : A Numerical Study of Separating Supersonic Laminar Boundary-Layers,
Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING MECHANICS
Personal Author(s) : Senechal,G. D. ; Werle,M. J.
Report Date : 27 SEP 1971
Pagination or Media Count : 73
Abstract : A numerical study has been made of the nature of the solution to the supersonic boundary-layer equations when the flow separates from the surface. To this end, implicit finite difference solutions t the governing equations are obtained for linearly and quadratically retarded flows over flat plates for a Mach number range of 2 to 15. Both extremely hot and cold wall conditions are considered. Also, solutions for flow on a compression ramp are obtained with and without including the boundary layer's free interaction with the local freestream. The results of this study indicate that non-interacting flows are singular at separation and that free interaction effects reduces singularity. An alternate means of numerically smearing out the singularity and proceeding past separation is also presented.
Descriptors : (*LAMINAR BOUNDARY LAYER, *FLOW SEPARATION), SUPERSONIC CHARACTERISTICS, EQUATIONS OF MOTION, PROBLEM SOLVING, INTERACTIONS, FLOW FIELDS, DIFFERENCE EQUATIONS, SHEAR STRESSES, MATHEMATICAL MODELS
Subject Categories : Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE