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    Estimation of Kinetic Energy Dissipation from Breaking Waves in the Wave Crest Region

    Source: Journal of Physical Oceanography:;2017:;Volume( 047 ):;issue: 005::page 1145
    Author:
    Lee, J. H.
    ,
    Monty, J. P.
    ,
    Elsnab, J.
    ,
    Toffoli, A.
    ,
    Babanin, A. V.
    ,
    Alberello, A.
    DOI: 10.1175/JPO-D-16-0273.1
    Publisher: American Meteorological Society
    Abstract: ave-induced turbulence due to breaking in the absence of surface shear stresses is investigated experimentally. A high-fidelity particle image velocimetry (PIV) technique is used to measure the turbulence near the water surface, inside the wave crests. The spatial velocity vector fields of the breaking waves acquired from PIV provide accurate vertical velocity profiles near the air?water interface, as well as wavenumber velocity spectra beneath the breaking waves at different depths. These velocity spectra exhibit a Kolmogorov interval at high wavenumbers, indicating the presence of isotropic turbulence and permitting an estimation of energy dissipation rates. The depth dependence of dissipation rates of the breaking waves generated in the laboratory shows a scaling similar to that found in wind-forced breaking waves in the field. A phase dependence in the dissipation rates of turbulence kinetic energy is also observed, which should be considered to improve the accuracy of the estimated and modeled wave energy dissipation.
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      Estimation of Kinetic Energy Dissipation from Breaking Waves in the Wave Crest Region

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4227324
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    • Journal of Physical Oceanography

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    contributor authorLee, J. H.
    contributor authorMonty, J. P.
    contributor authorElsnab, J.
    contributor authorToffoli, A.
    contributor authorBabanin, A. V.
    contributor authorAlberello, A.
    date accessioned2017-06-09T17:22:33Z
    date available2017-06-09T17:22:33Z
    date copyright2017/05/01
    date issued2017
    identifier issn0022-3670
    identifier otherams-84032.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4227324
    description abstractave-induced turbulence due to breaking in the absence of surface shear stresses is investigated experimentally. A high-fidelity particle image velocimetry (PIV) technique is used to measure the turbulence near the water surface, inside the wave crests. The spatial velocity vector fields of the breaking waves acquired from PIV provide accurate vertical velocity profiles near the air?water interface, as well as wavenumber velocity spectra beneath the breaking waves at different depths. These velocity spectra exhibit a Kolmogorov interval at high wavenumbers, indicating the presence of isotropic turbulence and permitting an estimation of energy dissipation rates. The depth dependence of dissipation rates of the breaking waves generated in the laboratory shows a scaling similar to that found in wind-forced breaking waves in the field. A phase dependence in the dissipation rates of turbulence kinetic energy is also observed, which should be considered to improve the accuracy of the estimated and modeled wave energy dissipation.
    publisherAmerican Meteorological Society
    titleEstimation of Kinetic Energy Dissipation from Breaking Waves in the Wave Crest Region
    typeJournal Paper
    journal volume47
    journal issue5
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/JPO-D-16-0273.1
    journal fristpage1145
    journal lastpage1150
    treeJournal of Physical Oceanography:;2017:;Volume( 047 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian