Accession Number:

ADA136257

Title:

Unsteady Boundary Layers on Thin Bodies of Revolution.

Descriptive Note:

Technical rept.,

Corporate Author:

MCDONNELL DOUGLAS CORP LONG BEACH CA

Personal Author(s):

Report Date:

1983-08-01

Pagination or Media Count:

38.0

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.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE