Influence of varying bathymetry in rogue wave occurrence within unidirectional and directional sea-states

被引：36

作者：

Ducrozet G. ^{[1
]}

Gouin M. ^{[1
,2
]}

机构：

[1] Ecole Centrale Nantes, LHEEA Lab.,UMR CNRS 6598, 1 rue de la Noë, Nantes

[2] Institut de Recherche Technologique Jules Verne, Chemin du Chaffault, Bouguenais

来源：

Journal of Ocean Engineering and Marine Energy | 2017年 / 3卷 / 04期

关键词：

Directional sea states; High-order spectral method; Rogue waves; Varying bathymetry;

D O I：

10.1007/s40722-017-0086-6

中图分类号：

学科分类号：

摘要：

Recent experimental and numerical studies have demonstrated an increased rogue wave activity during the propagation of a wave field over a sloping bottom, from a deeper to a shallower domain. These studies have shown the influence of several parameters (wave steepness, amplitude of depth variation, slope profile, etc.) but were limited to unidirectional sea-states. In this work, we focus on the effect of the directional spreading on the wave statistics. A highly nonlinear potential flow solver based on the High-Order Spectral method is used. We demonstrate that the enhancement of the extreme wave occurrence observed close to the shallower side of the slope is reduced when considering the directionality of the sea-state. We can state that the underlying physics is different between a real configuration and simplified unidirectional simulations. It is consequently essential to include directional effects in the context of rogue waves to have an accurate estimation of their probabilities of occurrence. © 2017, Springer International Publishing AG.

引用

页码：309 / 324

页数：15

共 54 条

[1]

Annenkov S.Y., Shrira V., Evolution of kurtosis for wind waves, Geophys Res Lett, 36, 13, (2009)

[2]

Belibassakis K., Athanassoulis G., Gerostathis T.P., A coupled-mode model for the refraction-diffraction of linear waves over steep three-dimensional bathymetry, Appl Ocean Res, 23, 6, pp. 319-336, (2001)

[3]

Benjamin T.B., Feir J., The disintegration of wave trains on deep water Part 1. Theory, J Fluid Mech, 27, 3, pp. 417-430, (1967)

[4]

Berkhoff J., Booy N., Radder A.C., Verification of numerical wave propagation models for simple harmonic linear water waves, Coast Eng, 6, 3, pp. 255-279, (1982)

[5]

Bobinski T., Eddi A., Petitjeans P., Maurel A., Pagneux V., Experimental demonstration of epsilon-near-zero water waves focusing, Appl Phys Lett, 107, 1, (2015)

[6]

Bonnefoy F., Ducrozet G., Le Touze D., Ferrant P., Time-domain simulation of nonlinear water waves using spectral methods, Adv Numer Simul Nonlinear Water Waves, 11, pp. 129-164, (2009)

[7]

Bunnik T., Benchmark workshop on numerical wave modeling—description of test cases. Technical Report 70022-1-RD, MARIN, The Netherlands, (2010)

[8]

Dommermuth D., The initialization of nonlinear waves using an adjustment scheme, Wave Motion, 32, 4, pp. 307-317, (2000)

[9]

Dommermuth D., Yue D., A high-order spectral method for the study of nonlinear gravity waves, J Fluid Mech, 184, pp. 267-288, (1987)

[10]

Ducrozet G., Bonnefoy F., Le Touze D., Ferrant P., HOS-Ocean: open-source solver for nonlinear waves in open ocean based on high-order Spectral method, Comput Phys Commun, 203, pp. 245-254, (2016)

← 1 2 3 4 5 6 →