Accession Number : ADA321516

Title :   Higher Order Turbulence Results for a Three-Dimensional Pressure-Driven Turbulent Boundary Layer.

Descriptive Note : Technical rept. 1 Jan-30 Sep 96,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF AEROSPACE AND OCE AN ENGINEERING

Personal Author(s) : Simpson, R. L. ; Olcmen, M. S.

PDF Url : ADA321516

Report Date : 30 SEP 1996

Pagination or Media Count : 168

Abstract : Triple and fourth-order turbulence products obtained from coincident fine-spatial-resolution three-velocity-component laser-Doppler-anemometer measurements are presented for a three-dimensional pressure-driven turbulent boundary layer from y(+)>3 to the outer edge in local wall-shear-stress-direction co-ordinates. The wind tunnel flow is produced by a Re(theta) = 5940, U(ref) = 27.5 m/s, upstream turbulent boundary layer on a flat surface that approaches a wing-body junction, although no results near the junction vortex are presented. For most of the presented locations, the mean velocities and stresses from this data set were previously discussed by Olcmen and Simpson (1995a). New data at additional locations and for a mean two-dimensional flow are presented. Results are plotted in 6 different co-ordinate systems in Appendices A-F.

Descriptors :   *TURBULENT BOUNDARY LAYER, *THREE DIMENSIONAL FLOW, PRESSURE GRADIENTS, DATA BASES, AIR FLOW, TURBULENCE, FLOW FIELDS, SHEAR STRESSES, WIND TUNNEL TESTS, FREE STREAM, WING BODY CONFIGURATIONS, PRESSURE DISTRIBUTION, REYNOLDS NUMBER, BOUNDARY LAYER FLOW, LASER ANEMOMETERS, TURBULENT DIFFUSION.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE