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Loading on a K-node in oscillatory flow

Record type: Article

An understanding of wave loading on a structural joint is of value in the design of offshore structures. This paper describes experiments which were conducted in order to assess the loading on a simple K-node in harmonic flows. Circumferential pressures were measured at three elevations of the main leg of a node which was oscillated sinusoidally in otherwise still water. In-line and transverse forces were obtained by integration, and the corresponding Morison and lift coefficients were determined. Results suggest that the use of drag coefficients appropriate to isolated cylinders may lead to an underprediction of the drag loading experienced on a node. Vortex shedding was well defined, with high values of lift coefficient observed when the K-node was face on the flow. However, for the node in-line with the flow, the vortex shedding pattern almost completely disappeared due to interference with the wake by the inclined members.

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Citation

Chaplin, J. R., Borthwick, A.G.L., Burrows, R. and Drossopoulos, G.M. (1991) Loading on a K-node in oscillatory flow Applied Ocean Research, 13, (2), pp. 100-106. (doi:10.1016/S0141-1187(05)80067-7).

More information

Published date: April 1991

Identifiers

Local EPrints ID: 186367
URI: http://eprints.soton.ac.uk/id/eprint/186367
ISSN: 0141-1187
PURE UUID: 41bc9f0d-d387-42da-8ec8-74fed9ac97a6

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Date deposited: 21 Jun 2011 16:08
Last modified: 18 Jul 2017 11:47

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Contributors

Author: J. R. Chaplin
Author: A.G.L. Borthwick
Author: R. Burrows
Author: G.M. Drossopoulos

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