Accession Number : AD0693603

Title :   THE THEORETICAL INVESTIGATIONS OF SEPARATED FLOWS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Panov,Yu. A. ; Shvets,A. I.

Report Date : 05 MAY 1969

Pagination or Media Count : 16

Abstract : This article presents a theoretical analysis of separated flows near steps and recesses on the basis of various available theoretical and experimental data. Flows in three characteristic regions are considered: (1) a region of boundary layer-shock wave interaction; (2) a region of a developed laminar flow; and (3) a flow near the obstacle. Equations of a uniform viscous compressible gas flow into a space with a liquid at rest are written with certain boundary conditions and assuming the absence of a boundary layer. Profiles of velocity and flow parameters on the dividing streamline, obtained from the above equations, are used for calculating base pressure by the Chapmen-Korst method. The effect of the initial boundary layer on calculations of base flow properties is discussed. Prandtl and Taylor models of the turbulent flow are used for determining the turbulent mixing. Profiles of velocities in terms of similarity parameter and the dependence of base pressure of Reynolds number, based on the boundary-layer momentum thickness obtained by Denison and Baum, are discussed. The use of laminar and turbulent profiles having a point of inflection for calculating heat transfer in the stagnation region is considered. (Author)

Descriptors :   (*JET PUMPS, MULTIPHASE FLOW), BOUNDARY LAYER, SHOCK WAVES, INTERACTIONS, LAMINAR FLOW, TURBULENCE, PRANDTL NUMBER, REYNOLDS NUMBER, SPECIFIC HEAT, STAGNATION POINT

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE