Wave turbulence and intermittency in directional wave fields

被引:16
|
作者
Fadaeiazar, Elmira [1 ]
Alberello, Alberto [2 ,3 ]
Onorato, Miguel [4 ,5 ]
Leontini, Justin [1 ]
Frascoli, Federico [6 ]
Waseda, Takuji [7 ]
Toffoli, Alessandro [2 ]
机构
[1] Swinbume Univ Technol, FSET, Dept Mech Engn & Prod Design, Hawthorn, Vic 3122, Australia
[2] Univ Melbourne, Dept Infrastruct Engn, Parkville, Vic 3010, Australia
[3] Univ Adelaide, Sch Math Sci, Adelaide, SA 5005, Australia
[4] Univ Torino, Dipartimento Fis Gen, I-10125 Turin, Italy
[5] INFN, Sez Torino, Via Pietro Giuria 1, I-10125 Turin, Italy
[6] Swinburne Univ Technol, Dept Math, FSET, Hawthorn, Vic 3122, Australia
[7] Univ Tokyo, Grad Sch Frontier Sci, Dept Ocean Technol Policy & Environm, Tokyo, Japan
关键词
Wave motion; Wave turbulence; Intermittency; Structure functions; Ocean waves; FETCH-LIMITED WAVES; GRAVITY-WAVES; EVOLUTION; SPECTRUM; FLUID; GULF;
D O I
10.1016/j.wavemoti.2018.09.002
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
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. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:94 / 101
页数:8
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