RESEARCH PAPERS: Other Research Papers

Planar Oscillatory Flow Forces at High Reynolds Numbers

[+] Author and Article Information
J. R. Chaplin

Ocean Engineering Research Centre, Department of Civil Engineering, City University, London, UK

J. Offshore Mech. Arct. Eng 115(1), 31-39 (Feb 01, 1993) (9 pages) doi:10.1115/1.2920086 History: Received December 03, 1991; Revised June 15, 1992; Online June 12, 2008


Measurements of pressures around a circular cylinder with fine surface roughness in planar oscillatory flow reveal considerable changes in drag and inertia coefficients over the Reynolds number range 2.5 × 105 to 7.5 × 105 , and at Keulegan-Carpenter numbers between 5 and 25. In most respects, these results are shown to be compatible with previous measurements in planar oscillatory flow, and with previous measurements in which the same 0.5-m-dia cylinder was tested in waves.

Copyright © 1993 by The American Society of Mechanical Engineers
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