An experimental comparison of velocities underneath focussed breaking waves

Alberello, Alberto, Chabchoub, Amin, Monty, Jason P., Nelli, Filippo, Lee, Jung Hoon, Elsnab, John and Toffoli, Alessandro (2018) An experimental comparison of velocities underneath focussed breaking waves. Ocean Engineering, 155. pp. 201-210. ISSN 0029-8018

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Abstract

Nonlinear wave interactions affect the evolution of steep wave groups, their breaking and the associated kinematic field. Laboratory experiments are performed to investigate the effect of the underlying focussing mechanism on the shape of the breaking wave and its velocity field. In this regard, it is found that the shape of the wave spectrum plays a substantial role. Broader underlying wave spectra leads to energetic plungers at a relatively low amplitude. For narrower spectra waves break at higher amplitudes but with a less energetic spiller. Comparison with standard engineering methods commonly used to predict the velocity underneath extreme waves shows that, under certain conditions, the measured velocity profile strongly deviates from engineering predictions.

Item Type: Article
Additional Information: Funding Information: A.A. and F.N. acknowledge support from the Swinburne University of Technology Postgraduate Research Award (SUPRA). Publisher Copyright: © 2018 Elsevier Ltd
Uncontrolled Keywords: kinematics,surface gravity waves,velocity,wave breaking,wave focussing,waves,environmental engineering,ocean engineering ,/dk/atira/pure/subjectarea/asjc/2300/2305
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Depositing User: LivePure Connector
Date Deposited: 04 Dec 2021 01:41
Last Modified: 08 Dec 2021 09:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/82544
DOI: 10.1016/j.oceaneng.2018.02.049

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