Fluctuating Forces on a Rectangular Prism and a Circular Cylinder Placed Vertically in a Turbulent Boundary Layer

[+] Author and Article Information
H. Sakamoto, S. Oiwake

Department of Mechanical Engineering, Kitami Institute of Technology, Kitami, 090, Japan

J. Fluids Eng 106(2), 160-166 (Jun 01, 1984) (7 pages) doi:10.1115/1.3243093 History: Received July 01, 1982; Online October 26, 2009


An experimental study was conducted to investigate the fluctuating force generated by the shedding of vortices from a three-dimensional bluff body placed vertically in a turbulent boundary layer. A conventional strain-gauge balance was modified and used in the experiment. The balance used has a relatively high natural frequency and gives a linear relation between force and strain. Prisms with a square cross section and circular cylinders were selected as three-dimensional bodies varing in aspect ratio and height. The aspect ratio and the ratio of the height to the boundary layer thickness were varied in the measurement of the fluctuating force on a body.

Copyright © 1984 by ASME
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