Accession Number : ADA332948

Title :   An Experimental Examination of the Streamwise Velocity in a Plane Mixing Layer using a Single Hot-Wire Sensor

Descriptive Note : Final rept. 10 Oct 95-15 Mar 96

Corporate Author : ARMY RESEARCH LAB ADELPHI MD

Personal Author(s) : Loucks, Richard B.

PDF Url : ADA332948

Report Date : SEP 1997

Pagination or Media Count : 35

Abstract : A single-sensor hot-wire probe was used to make streamwise measurements in a turbulent plane mixing layer. The mixing layer, with a velocity ratio of approximately 2:1, was created in an open return wind tunnel by the insertion of a curved splitter plate. Conditions were studied with the splitter plate boundary layers tripped. The single-sensor results demonstrate that this mixing layer has standard velocity field statistical properties. The data were taken at several Reynolds numbers in the fully turbulent flow downstream of the mixing point. The results from the tripped initial boundary layers/ fully turbulent conditions were compared with the temporally developing mixing layer direct numerical simulation results of Rogers and Moser (1994).

Descriptors :   *FLUID DYNAMICS, *HOT WIRE ANEMOMETERS, LAYERS, TURBULENT FLOW, REYNOLDS NUMBER, DOWNSTREAM FLOW, BOUNDARY LAYER FLOW.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE