Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth - Archive ouverte HAL Access content directly
Journal Articles Physics of Fluids Year : 2013

Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth

A. Toffoli
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L. Fernandez
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J. Monbaliu
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E. Gagnaire-Renou
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J. M. Lefevre
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C. Pakozdi
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C. T. Stansberg
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T. Waseda
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Abstract

We present a laboratory experiment in a large directional wave basin to discuss the instability of a plane wave to oblique side band perturbations in finite water depth. Experimental observations, with the support of numerical simulations, confirm that a carrier wave becomes modulationally unstable even for relative water depths k(0)h < 1.36 (with k the wavenumber of the plane wave and h the water depth), when it is perturbed by appropriate oblique disturbances. Results corroborate that the underlying mechanism is still a plausible explanation for the generation of rogue waves in finite water depth. (C) 2013 AIP Publishing LLC.
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hal-00947780 , version 1 (17-02-2014)

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A. Toffoli, L. Fernandez, J. Monbaliu, M. Benoit, E. Gagnaire-Renou, et al.. Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth. Physics of Fluids, 2013, 25 (9), ⟨10.1063/1.4821810⟩. ⟨hal-00947780⟩
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