Accession Number : AD0606982

Title :   ANALYSIS OF FREE SHEAR LAYER WITH FINITE INITIAL THICKNESS AND ITS APPLICATION TO BASE FLOW,

Corporate Author : DOUGLAS AIRCRAFT CO INC SANTA MONICA CALIF

Personal Author(s) : Toba,K.

Report Date : 14 MAY 1964

Pagination or Media Count : 64

Abstract : A theoretical study is presented which concerns the development of a two-dimensional free shear layer with finite initial thickness. Near the initial point, a nonsimilar solution is found by matching an inner solution for the mixing layer with an outer solution for the shear layer at the edge of the mixing layer. Far from the initial point, an asymptotic similar solution is possible and can be determined uniquely by matching the initial solution with the perturbed asymptotic solution within the common domain of convergence. Application of this study to the base flow is aimed at improving the classical Chapman theory by taking into account the expansion of the separated boundary layer at the base, the mass blowing or suction from the body surface with or without inclusion of the base, and the heat transfer effect. Preliminary numerical results are in general agreement with available experimental data. An extensive program of numerical calculations and an extension of the formulation to cover real gas effects is under way. (Author)

Descriptors :   (*FLUID FLOW, MATHEMATICAL ANALYSIS), TWO DIMENSIONAL FLOW, BOUNDARY LAYER, HEAT TRANSFER, SHEAR STRESSES, SURFACES

Distribution Statement : APPROVED FOR PUBLIC RELEASE