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Hydrodynamic forces on vertical piggyback cylinders in regular waves

Huang, S. and Olsen, R. (2002) Hydrodynamic forces on vertical piggyback cylinders in regular waves. International Journal of Offshore and Polar Engineering, 12 (4). pp. 249-255. ISSN 1053-5381

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Abstract

The wave-induced hydrodynamic forces on a pair of vertical cylinders of different diameters in close proximity are investigated experimentally. The smaller cylinder is placed at various circumferential positions around the larger one. The effects of the wall-to-wall gap between the 2 cylinders are also investigated. The wave forces, including drag, inertia forces and mean lift, are measured on each cylinder independently and at 2 different depths below the mean water level for each cylinder. The Keulegan-Carpenter numbers vary from 0.4 to 14 based upon the larger cylinder diameter, and the Reynolds numbers are in the subcritical regime. It is found that there is significant interference effect upon the cylinder drag and inertia coefficients.

Item type: Article
ID code: 38208
Keywords: hydrodynamics, vertical cylinders , inertia forces, piggyback risers, wave loading, Naval Science and Military Science, Civil and Structural Engineering, Mechanical Engineering, Ocean Engineering
Subjects: Naval Science
Department: Faculty of Engineering > Naval Architecture and Marine Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 06 Mar 2012 14:08
    Last modified: 04 Sep 2014 19:07
    URI: http://strathprints.strath.ac.uk/id/eprint/38208

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