Direct Force Wall Shear Measurements in Pressure-Driven Three-Dimensional Turbulent Boundary Layers

[+] Author and Article Information
J. E. McAllister, M. H. Tennant

Savannah River Laboratory, E.I. du Pont de Nemours & Co., Aiken, S.C.

F. J. Pierce

Mechanical Engineering, Virginia Polytechnic Institute and State Univ., Blacksburg, Va. 24061

J. Fluids Eng 104(2), 150-155 (Jun 01, 1982) (6 pages) doi:10.1115/1.3241794 History: Received June 30, 1980; Online October 26, 2009


Unique, simultaneous direct measurements of the magnitude and direction of the local wall shear stress in a pressure-driven three-dimensional turbulent boundary layer are presented. The flow is also described with an oil streak wall flow pattern, a map of the wall shear stress-wall pressure gradient orientations, a comparison of the wall shear stress directions relative to the directions of the nearest wall velocity as measured with a typical, small boundary layer directionally sensitive claw probe, as well as limiting wall streamline directions from the oil streak patterns, and a comparison of the freestream streamlines and the wall flow streamlines. A review of corrections for direct force sensing shear meters for two-dimensional flows is presented with a brief discussion of their applicability to three-dimensional devices.

Copyright © 1982 by ASME
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