Hydrodynamic damping of a cylinder at B-10(6)


Chaplin, J. R. (2000) Hydrodynamic damping of a cylinder at B-10(6). Journal of Fluids and Structures, 14, (8), 1101-1117. (doi:10.1006/jfls.2000.0318).

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Description/Abstract

This paper describes delicate, but large-scale, experiments aimed at measuring the hydrodynamic damping of a circular cylinder oscillating in still water and transversely in a current. Attention is concentrated on the regime of very small Keulegan–Carpenter numbers, in which the drag coefficient is inversely proportional to the Keulegan–Carpenter number. Measurements in still water at β=650 000 and 1250 000 point to drag coefficients about twice those appropriate to two-dimensional laminar flow, in common with earlier measurements at β≈105. In the presence of a slowly varying transverse current (generated by placing the cylinder at the node of standing waves of long period), the damping increased with the reduced velocity of the ambient flow at a rate that increased with the Reynolds number.

Item Type: Article
ISSNs: 0889-9746 (print)
1095-8622 (electronic)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Civil Engineering and the Environment
Item ID: 73997
Date Deposited: 11 Mar 2010
Last Modified: 02 Mar 2012 11:54
Contributors: Chaplin, J. R. (Author)
Date: November 2000
Status: Published
URI: http://eprints.soton.ac.uk/id/eprint/73997

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