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Some observations on the cross flow oscillations of a pair of interfering circular cylinders

Published online by Cambridge University Press:  04 July 2016

A. Bokaian  and
F. Geoola
A. Bokaian
Affiliation:
Principia Mechanics and National Nuclear Corporation, Warrington
F. Geoola
Affiliation:
Department of Civil Engineering, University College, London
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Extract

Cylindrical arrays subjected to external flow have been the subject of considerable study in recent years. Much of this study is concerned with a solitary cylinder or cylinder arrays involving many cylinders with the same diameters. Common structures however have cylinders with different diameters. For example, in a reactor, there are small diameter cylinders amongst large ones. In this situation, the dynamic behaviour of the cylinders are different from the cylinder arrays of equal diameters. Since the case of a pair of parallel circular cylinders in a cross-flow constitutes the simplest configuration, its study should be of importance in the understanding of more complicated situations. Various modes of oscillations associated with two interfering cylinders may be found in review papers by Zdravkovich. This note presents some laboratory observations of the response of a rigid twodimensional flexibly mounted smooth circular cylinder, with vibrations restricted to a plane normal to the incident flow, as induced by the vicinity of a rigid parallel circular cylinder of different diameter.

Type
Technical Note
Information
The Aeronautical Journal , Volume 93 , Issue 922 , February 1989 , pp. 66 - 72
Copyright
Copyright © Royal Aeronautical Society 1989 

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Footnotes

*

Now with Nuclear Design Associates, Knutsford, Cheshire

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