Accession Number : ADA316127

Title :   Dynamic Effects of Suction/Heating on Turbulent Boundary Layers.

Descriptive Note : Final rept. 1 Oct 91-28 Feb 96,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Blackwelder, Ron

PDF Url : ADA316127

Report Date : 30 SEP 1996

Pagination or Media Count : 22

Abstract : The goals of this research were to constructively interact with and alter vortical structures embedded within boundary layers. The concept of selective interaction was developed which utilized information about the location of the vortical structures so that the interaction could be tailored to more efficiently alter the eddies. Different types of mechanisms were deployed to alter the eddies including suction, blowing, actuators, etc. These methods altered the development of streamwise vortices sufficiently that their breakdown and mixing were significantly delayed.

Descriptors :   *TURBULENT BOUNDARY LAYER, *VORTICES, AIR FLOW, TURBULENCE, EDDIES(FLUID MECHANICS), FLOW VISUALIZATION, FLOW FIELDS, WIND TUNNEL TESTS, BOUNDARY LAYER TRANSITION, FREE STREAM, SUCTION, DELTA WINGS, BOUNDARY LAYER CONTROL, SHEAR FLOW, BOUNDARY LAYER FLOW.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE