The velocity field underneath linear and nonlinear breaking rogue waves
During the past decades, a large number of waves of extreme height and abnormal shape, also known as freak or rogue waves, have been recorded in the ocean. Velocities and related forces can be enormous and jeopardise the safety of marine structures. Here, we present an experimental study devoted to...
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American Society of Mechanical Engineers (ASME)
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:82100 2023-05-15T14:26:50+02:00 The velocity field underneath linear and nonlinear breaking rogue waves Alberello, Alberto Chabchoub, Amin Babanin, Alexander V. Monty, Jason P. Elsnab, John Lee, Jung H. Bitner-Gregersen, Elzbieta M. Toffoli, Alessandro 2016-10-18 https://ueaeprints.uea.ac.uk/id/eprint/82100/ https://doi.org/10.1115/OMAE2016-54481 unknown American Society of Mechanical Engineers (ASME) Alberello, Alberto, Chabchoub, Amin, Babanin, Alexander V., Monty, Jason P., Elsnab, John, Lee, Jung H., Bitner-Gregersen, Elzbieta M. and Toffoli, Alessandro (2016) The velocity field underneath linear and nonlinear breaking rogue waves. In: Structures, Safety and Reliability. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE. American Society of Mechanical Engineers (ASME), KOR. ISBN 9780791849941 doi:10.1115/OMAE2016-54481 Book Section NonPeerReviewed 2016 ftuniveastangl https://doi.org/10.1115/OMAE2016-54481 2023-01-30T21:56:05Z During the past decades, a large number of waves of extreme height and abnormal shape, also known as freak or rogue waves, have been recorded in the ocean. Velocities and related forces can be enormous and jeopardise the safety of marine structures. Here, we present an experimental study devoted to investigate the velocity field underneath a breaking rogue wave. The latter is replicated in the laboratory by means of dispersive focussing methods such as the New Wave Theory and nonlinear focussing techniques based on the Nonlinear Schrödinger equation. While the former is basically a liner method, the nonlinear focussing fully accounts for the dynamical evolution of the wave field. Experiments were carried out in the Extreme Air-Sea Interaction flume of the University of Melbourne using a Particle Image Velocimetry (PIV) system to measure the velocity field below the water surface. Measurements show that the mechanism of generation affects the shape of the breaking waves as well as the kinematic field and associated hydrodynamic forces. Particularly, the New Wave Theory leads to higher velocities and a more energetic breaker than the nonlinear focussing. Book Part Arctic University of East Anglia: UEA Digital Repository Breaker ENVELOPE(-67.257,-67.257,-67.874,-67.874) Volume 3: Structures, Safety and Reliability |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
language |
unknown |
description |
During the past decades, a large number of waves of extreme height and abnormal shape, also known as freak or rogue waves, have been recorded in the ocean. Velocities and related forces can be enormous and jeopardise the safety of marine structures. Here, we present an experimental study devoted to investigate the velocity field underneath a breaking rogue wave. The latter is replicated in the laboratory by means of dispersive focussing methods such as the New Wave Theory and nonlinear focussing techniques based on the Nonlinear Schrödinger equation. While the former is basically a liner method, the nonlinear focussing fully accounts for the dynamical evolution of the wave field. Experiments were carried out in the Extreme Air-Sea Interaction flume of the University of Melbourne using a Particle Image Velocimetry (PIV) system to measure the velocity field below the water surface. Measurements show that the mechanism of generation affects the shape of the breaking waves as well as the kinematic field and associated hydrodynamic forces. Particularly, the New Wave Theory leads to higher velocities and a more energetic breaker than the nonlinear focussing. |
format |
Book Part |
author |
Alberello, Alberto Chabchoub, Amin Babanin, Alexander V. Monty, Jason P. Elsnab, John Lee, Jung H. Bitner-Gregersen, Elzbieta M. Toffoli, Alessandro |
spellingShingle |
Alberello, Alberto Chabchoub, Amin Babanin, Alexander V. Monty, Jason P. Elsnab, John Lee, Jung H. Bitner-Gregersen, Elzbieta M. Toffoli, Alessandro The velocity field underneath linear and nonlinear breaking rogue waves |
author_facet |
Alberello, Alberto Chabchoub, Amin Babanin, Alexander V. Monty, Jason P. Elsnab, John Lee, Jung H. Bitner-Gregersen, Elzbieta M. Toffoli, Alessandro |
author_sort |
Alberello, Alberto |
title |
The velocity field underneath linear and nonlinear breaking rogue waves |
title_short |
The velocity field underneath linear and nonlinear breaking rogue waves |
title_full |
The velocity field underneath linear and nonlinear breaking rogue waves |
title_fullStr |
The velocity field underneath linear and nonlinear breaking rogue waves |
title_full_unstemmed |
The velocity field underneath linear and nonlinear breaking rogue waves |
title_sort |
velocity field underneath linear and nonlinear breaking rogue waves |
publisher |
American Society of Mechanical Engineers (ASME) |
publishDate |
2016 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/82100/ https://doi.org/10.1115/OMAE2016-54481 |
long_lat |
ENVELOPE(-67.257,-67.257,-67.874,-67.874) |
geographic |
Breaker |
geographic_facet |
Breaker |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Alberello, Alberto, Chabchoub, Amin, Babanin, Alexander V., Monty, Jason P., Elsnab, John, Lee, Jung H., Bitner-Gregersen, Elzbieta M. and Toffoli, Alessandro (2016) The velocity field underneath linear and nonlinear breaking rogue waves. In: Structures, Safety and Reliability. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE. American Society of Mechanical Engineers (ASME), KOR. ISBN 9780791849941 doi:10.1115/OMAE2016-54481 |
op_doi |
https://doi.org/10.1115/OMAE2016-54481 |
container_title |
Volume 3: Structures, Safety and Reliability |
_version_ |
1766300270865678336 |