Accession Number : ADA136257

Title :   Unsteady Boundary Layers on Thin Bodies of Revolution.

Descriptive Note : Technical rept.,


Personal Author(s) : Cebeci,T ; Stewartson,K ; Schimke,S M

PDF Url : ADA136257

Report Date : Aug 1983

Pagination or Media Count : 38

Abstract : The evolution of unsteady boundary layers on the line of symmetry of a thin prolate spheroid in uniform motion at constant angle of attack after an impulsive start is studied for a prescribed pressure distribution and results have been obtained for angles of attack ranging from 30 degrees to 50 degrees. The unsteady boundary layer is initially unseparated but develops a region of reversed flow after a finite time. A short time later, the streamwise displacement thickness develops a pronounced peak and leads to a singularity of the same type as that observed by van Dommelen and Shen on a circular cylinder started impulsively from rest.

Descriptors :   *Boundary layer, *Unsteady flow, Flow separation, Bodies of revolution, Angle of attack, Airfoils

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE