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...
Published in: | Volume 3: Structures, Safety and Reliability |
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Online Access: | http://hdl.handle.net/1959.3/437455 https://doi.org/10.1115/OMAE2016-54481 |
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ftswinburne:tle:82febe45-1992-4536-8752-7a3ca1e6a823:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-05-15T14:24:23+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 Swinburne University of Technology 2016 http://hdl.handle.net/1959.3/437455 https://doi.org/10.1115/OMAE2016-54481 unknown ASME http://hdl.handle.net/1959.3/437455 https://doi.org/10.1115/OMAE2016-54481 Copyright © 2016 ASME. Proceedings of the 35th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2016), Busan, South Korea, 19-24 June 2016, Vol. 3, p. V003T02A001, article no. OMAE2016-54481 Conference paper 2016 ftswinburne https://doi.org/10.1115/OMAE2016-54481 2019-09-07T20:58:24Z 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 Schrodinger 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. Conference Object Arctic Swinburne University of Technology: Swinburne Research Bank Breaker ENVELOPE(-67.257,-67.257,-67.874,-67.874) Volume 3: Structures, Safety and Reliability |
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Open Polar |
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Swinburne University of Technology: Swinburne Research Bank |
op_collection_id |
ftswinburne |
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 Schrodinger 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. |
author2 |
Swinburne University of Technology |
format |
Conference Object |
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 |
ASME |
publishDate |
2016 |
url |
http://hdl.handle.net/1959.3/437455 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_source |
Proceedings of the 35th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2016), Busan, South Korea, 19-24 June 2016, Vol. 3, p. V003T02A001, article no. OMAE2016-54481 |
op_relation |
http://hdl.handle.net/1959.3/437455 https://doi.org/10.1115/OMAE2016-54481 |
op_rights |
Copyright © 2016 ASME. |
op_doi |
https://doi.org/10.1115/OMAE2016-54481 |
container_title |
Volume 3: Structures, Safety and Reliability |
_version_ |
1766296804996939776 |