The University of Southampton
University of Southampton Institutional Repository

Loading on a vertical cylinder in multidirectional waves

Chaplin, J.R., Subbiah, K. and Irani, M. (1995) Loading on a vertical cylinder in multidirectional waves Journal of Offshore Mechanics and Arctic Engineering, 117, (3), pp. 151-158. (doi:10.1115/1.2827083).

Record type: Article


This paper presents laboratory measurements of local and total loading on an isolated vertical cylinder in irregular unidirectional and multidirectional waves. Maximum Keulegan-Carpenter numbers in individual waves were about 16, and maximum Reynolds numbers about 3 × 104. It is shown that in these conditions, existing theoretical and numerical models underestimate the reduction in loading on a cylinder due to wave spreading. Besides the changes that are predicted when Morison's equation is used with constant coefficients, there are hydrodynamic influences that contribute further force reductions. Comparisons with Dean's (1977) hybrid approach suggest that in the present conditions these reductions are in the region of 3 and 6 percent for a spreading function cos2s , with s = 8 and s = 2, respectively. Larger reductions can be expected at higher Keulegan-Carpenter numbers, though scale effects are likely to become more important in the drag-dominated regime.

Full text not available from this repository.

More information

Published date: August 1995


Local EPrints ID: 75398
ISSN: 0892-7219
PURE UUID: 883295c4-3f9d-4a44-8948-f4510e50e34e

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:43

Export record



Author: J.R. Chaplin
Author: K. Subbiah
Author: M. Irani

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.