Accession Number : AD0680973

Title :   WALL SHEAR STRESS DIAGNOSTICS IN THREE-DIMENSIONAL TURBULENT BOUNDARY LAYERS.

Descriptive Note : Interim technical rept. no. 2,

Corporate Author : VIRGINIA POLYTECHNIC INST BLACKSBURG DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Pierce,F. J. ; Krommenhoek,D. H.

Report Date : SEP 1968

Pagination or Media Count : 78

Abstract : Several of the more common means of inferring local wall shear values in two-dimensional turbulent boundary layer flows are reviewed and the suitability of these means for use in three-dimensional turbulent flows is discussed. A simple, floating element, direct force sensing device, corrected for pressure gradient effects, was used to measure the local wall shear stress in a strongly skewed, low-speed, incompressible three-dimensional turbulent boundary layer flow. These pressures corrected, direct force measurements are compared to wall shear stress values inferred by variations or adaptations of the two-dimensional techniques and/or devices reviewed. (Author)

Descriptors :   (*TURBULENT BOUNDARY LAYER, *SHEAR STRESSES), THREE DIMENSIONAL FLOW, SKIN FRICTION, BOUNDARY LAYER, WALLS, INCOMPRESSIBLE FLOW, PRESSURE GAGES

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE