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| Titel |
3-D HOS simulations of extreme waves in open seas |
| VerfasserIn |
G. Ducrozet, F. Bonnefoy, D. Touzé, P. Ferrant |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 7, no. 1 ; Nr. 7, no. 1 (2007-01-25), S.109-122 |
| Datensatznummer |
250004332
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| Publikation (Nr.) |
 copernicus.org/nhess-7-109-2007.pdf |
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| Zusammenfassung |
| In the present paper we propose a method for studying extreme-wave
appearance based on the Higher-Order Spectral (HOS) technique
proposed by West et al.
(1987) and Dommermuth and Yue (1987). The enhanced HOS
model we use is presented and validated on test cases.
Investigations of freak-wave events appearing within long-time
evolutions of 2-D and 3-D wavefields in open seas are then realized,
and the results are discussed. Such events are obtained in our
periodic-domain HOS model by using different kinds of
configurations: either i) we impose an initial 3-D directional
spectrum with the phases adjusted so as to form a focused
forced event after a while, or ii) we let 2-D and 3-D
wavefields defined by a directional wave spectrum evolve up to the
natural appearance of freak waves. Finally, we investigate
the influence of directionality on extreme wave events with an
original study of the 3-D shape of the detected freak waves. |
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