Wave turbulence and intermittency in directional wave fields

Fadaeiazar, Elmira, Alberello, Alberto, Onorato, Miguel, Leontini, Justin, Frascoli, Federico, Waseda, Takuji and Toffoli, Alessandro (2018) Wave turbulence and intermittency in directional wave fields. Wave Motion, 83. pp. 94-101. ISSN 0165-2125

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Abstract

The evolution of surface gravity waves is driven by nonlinear interactions that trigger an energy cascade similarly to the one observed in hydrodynamic turbulence. This process, known as wave turbulence, has been found to display anomalous scaling with deviation from classical turbulent predictions due to the emergence of coherent and intermittent structures on the water surface. In the ocean, waves are spread over a wide range of directions, with a consequent attenuation of the nonlinear properties. A laboratory experiment in a large wave facility is presented to discuss the sensitivity of wave turbulence on the directional properties of model wave spectra. Results show that the occurrence of coherent and intermittent structures become less likely with the broadening of the wave directional spreading. There is no evidence, however, that intermittency completely vanishes.

Item Type: Article
Additional Information: Funding Information: The experiments were supported by the JSPS Fellowship for Research in Japan Program , Grants-in-Aid for Scientific Research of the JSPS and the International Science Linkages (ISL) Program of the Australian Academy of Science . M.O. received support from Progetto di Ricerca d’Ateneo CSTO160004 and the “Departments of Excellence 2018–2022” Grant awarded by the Italian Ministry of Education, University and Research (MIUR, L.232/2016 ). A.A. and A.T. acknowledge support from the Air-Sea-Ice Lab Project . M.O. is grateful Dr. B. Giulinico for discussions. Publisher Copyright: © 2018 Elsevier B.V.
Uncontrolled Keywords: intermittency,ocean waves,structure functions,wave motion,wave turbulence,modelling and simulation,physics and astronomy(all),computational mathematics,applied mathematics ,/dk/atira/pure/subjectarea/asjc/2600/2611
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Depositing User: LivePure Connector
Date Deposited: 04 Dec 2021 01:41
Last Modified: 08 Dec 2021 09:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/82547
DOI: 10.1016/j.wavemoti.2018.09.002

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