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Characterisation of slam events of a high-speed catamaran in irregular waves

Citation

Thomas, GA and Davis, MR and Holloway, DS and Roberts, T and Matsubara, S and Lavroff, J and Amin, WAI and Chamberlin, KR and Dove, TW, Characterisation of slam events of a high-speed catamaran in irregular waves, Proceeding of the 10th International Conference on Fast Sea Transportation, 5th -8th October, Athens, pp. 177-188. ISBN 978-960-254-686-4 (2009) [Refereed Conference Paper]


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Abstract

A hydroelastic segmented model of a wave-piercer catamaran has been designed and constructed for obtaining experimental values of global and slamming loads. The model was extensively instrumented with strain gauges, pressure transducers, LVDTs and a series of wave probes. It was tested in irregular head seas, for a variety of significant wave heights and modal periods. For the conditions tested, slam occurrence rates show an increase in slam rate with a rise in wave height but a reduction with an increase in speed. In all conditions a range of slam magnitudes was seen, with the majority of slam events being of low severity. Slam events are characterised according to a range of parameters, revealing that the majority of slams occurred within the bow reaching 20% of the wave length before the wave peak. The height of the back of the preceding wave has more influence on the slam magnitude that the face height of the wave into which the vessel slams and the majority ofthe peak slam pressures were located in the vicinity of the centre bow truncation and further aft.The relative vertical velocity at impact tended to correlate with the slam magnitude.

Item Details

Item Type:Refereed Conference Paper
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Naval Architecture
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Thomas, GA (Professor Giles Thomas)
Author:Davis, MR (Professor Michael Davis)
Author:Holloway, DS (Dr Damien Holloway)
Author:Matsubara, S (Dr Shinsuke Matsubara)
Author:Lavroff, J (Dr Jason Lavroff)
Author:Amin, WAI (Dr Walid Amin)
Author:Chamberlin, KR (Mr Kim Chamberlin)
Author:Dove, TW (Mr Trevor Dove)
ID Code:58625
Year Published:2009
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2009-10-16
Last Modified:2015-03-31
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