Experimental Investigation of a Turbulent Flow in the Vicinity of an Appendage Mounted on a Flat Plate

[+] Author and Article Information
P. Merati

Department of Mechanical and Aeronautical Engineering, Western Michigan University, Kalamazoo, Mich. 49008

H. M. McMahon

School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332

K. M. Yoo

Georgia Institute of Technology, Atlanta, GA 30332

J. Fluids Eng 113(4), 635-642 (Dec 01, 1991) (8 pages) doi:10.1115/1.2926527 History: Received January 15, 1991; Online May 23, 2008


Experimental measurements were carried out in an incompressible three-dimensional turbulent shear layer in the vicinity of an appendage mounted perpendicular to a flat plate. The thickness of the turbulent boundary layer as it approached the appendage leading edge was 76 mm or 1.07 times the maximum thickness of the appendage. As the oncoming boundary layer passed around the appendage, a strong secondary flow was formed which was dominated by a horseshoe root vortex. This secondary flow had a major effect in redistributing both the mean flow and turbulence quantities throughout the shear layer, and this effect persisted to a significant degree up to at least three chord lengths downstream of the appendage leading edge.

Copyright © 1991 by The American Society of Mechanical Engineers
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