Modulational instability in directional wave fields, and extreme wave events
The paper is based on review of research articles by the authors, with the purpose to demonstrate that the modulational-instability mechanism is active in typical directional wave fields. If so, possible limits for the wave height due to such mechanism can be outlined. The modulational instability c...
Published in: | Volume 2: Structures, Safety and Reliability |
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American Society of Mechanical Engineers
2011
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Online Access: | http://hdl.handle.net/1959.3/207056 https://doi.org/10.1115/OMAE2011-49540 |
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ftswinburne:tle:281a7e28-0d24-4fd9-a982-78d08a987ba3:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-05-15T14:25:51+02:00 Modulational instability in directional wave fields, and extreme wave events Babanin, Alexander V. Waseda, Takuji Shugan, Igor Hwung, Hweng-Hweng Swinburne University of Technology 2011 http://hdl.handle.net/1959.3/207056 https://doi.org/10.1115/OMAE2011-49540 unknown American Society of Mechanical Engineers http://purl.org/au-research/grants/arc/LP0883888 http://purl.org/au-research/grants/arc/DP1093517 http://hdl.handle.net/1959.3/207056 https://doi.org/10.1115/OMAE2011-49540 Copyright © 2011 by ASME. ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2011), Rotterdam, The Netherlands, 19-24 June 2011, Vol. 2, pp. 409-415, paper no. OMAE2011-49540 Conference paper 2011 ftswinburne https://doi.org/10.1115/OMAE2011-49540 2020-03-16T23:26:42Z The paper is based on review of research articles by the authors, with the purpose to demonstrate that the modulational-instability mechanism is active in typical directional wave fields. If so, possible limits for the wave height due to such mechanism can be outlined. The modulational instability can lead to occurrence of very high waves, which either proceed to the breaking or appear as rogue events, but it was derived for and is usually associated with two-dimensional wave trains. There exists argument, both analytical and experimental, that this kind of instability is impaired or even suppressed in three-dimensional (directional) wave systems. The first part of the paper demonstrates indirect experimental evidences which relate the wave breaking in oceanic conditions to features of two-dimensional breaking waves due to modulational instability. The second section is dedicated to direct measurements of such instability-caused breaking in a directional wave tank with directional spread and mean steepness typical of those in the field. The last section provides conclusions on what is maximal height of an individual wave, depending on the mean wave steepness in a wave train/field, that can be achieved due to such non-linear evolution of wave trains. Conference Object Arctic Swinburne University of Technology: Swinburne Research Bank Volume 2: Structures, Safety and Reliability 409 415 |
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Swinburne University of Technology: Swinburne Research Bank |
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ftswinburne |
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unknown |
description |
The paper is based on review of research articles by the authors, with the purpose to demonstrate that the modulational-instability mechanism is active in typical directional wave fields. If so, possible limits for the wave height due to such mechanism can be outlined. The modulational instability can lead to occurrence of very high waves, which either proceed to the breaking or appear as rogue events, but it was derived for and is usually associated with two-dimensional wave trains. There exists argument, both analytical and experimental, that this kind of instability is impaired or even suppressed in three-dimensional (directional) wave systems. The first part of the paper demonstrates indirect experimental evidences which relate the wave breaking in oceanic conditions to features of two-dimensional breaking waves due to modulational instability. The second section is dedicated to direct measurements of such instability-caused breaking in a directional wave tank with directional spread and mean steepness typical of those in the field. The last section provides conclusions on what is maximal height of an individual wave, depending on the mean wave steepness in a wave train/field, that can be achieved due to such non-linear evolution of wave trains. |
author2 |
Swinburne University of Technology |
format |
Conference Object |
author |
Babanin, Alexander V. Waseda, Takuji Shugan, Igor Hwung, Hweng-Hweng |
spellingShingle |
Babanin, Alexander V. Waseda, Takuji Shugan, Igor Hwung, Hweng-Hweng Modulational instability in directional wave fields, and extreme wave events |
author_facet |
Babanin, Alexander V. Waseda, Takuji Shugan, Igor Hwung, Hweng-Hweng |
author_sort |
Babanin, Alexander V. |
title |
Modulational instability in directional wave fields, and extreme wave events |
title_short |
Modulational instability in directional wave fields, and extreme wave events |
title_full |
Modulational instability in directional wave fields, and extreme wave events |
title_fullStr |
Modulational instability in directional wave fields, and extreme wave events |
title_full_unstemmed |
Modulational instability in directional wave fields, and extreme wave events |
title_sort |
modulational instability in directional wave fields, and extreme wave events |
publisher |
American Society of Mechanical Engineers |
publishDate |
2011 |
url |
http://hdl.handle.net/1959.3/207056 https://doi.org/10.1115/OMAE2011-49540 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2011), Rotterdam, The Netherlands, 19-24 June 2011, Vol. 2, pp. 409-415, paper no. OMAE2011-49540 |
op_relation |
http://purl.org/au-research/grants/arc/LP0883888 http://purl.org/au-research/grants/arc/DP1093517 http://hdl.handle.net/1959.3/207056 https://doi.org/10.1115/OMAE2011-49540 |
op_rights |
Copyright © 2011 by ASME. |
op_doi |
https://doi.org/10.1115/OMAE2011-49540 |
container_title |
Volume 2: Structures, Safety and Reliability |
container_start_page |
409 |
op_container_end_page |
415 |
_version_ |
1766298336473645056 |