The structure of energy fluxes in wave turbulence
The structure of energy fluxes in wave turbulence
复制标题
波湍流中的能量通量结构
DOI:
10.1017/jfm.2022.995
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发表时间:
2023
影响因子:
3.7
通讯作者:
Lvov, Yuri V.
中科院分区:
文献类型:
--
作者:
Dematteis, Giovanni;Lvov, Yuri V.
We calculate the net energy per unit time exchanged between two sets of modes in a generic system governed by a three-wave kinetic equation. Our calculation is based on the property of detailed energy conservation of the triadic resonant interactions. In a first application to isotropic systems, we re-derive the previously used formula for the energy flux as a particular case for adjacent sets. We then exploit the new formalism to quantify the level of locality of the energy transfers in the example of surface capillary waves. A second application to anisotropic wave systems expands the currently available set of tools to investigate magnitude and direction of the energy fluxes in these systems. We illustrate the use of the formalism by characterizing the energy pathways in the oceanic internal wavefield. Our proposed approach, unlike traditional approaches, is not limited to stationarity, scale invariance and strict locality. In addition, we define a number that quantifies the scale separation necessary for two sets of modes to having negligible mutual energy exchange, with potential consequences in the interpretation of wave turbulence experiments. The methodology presented here provides a general, simple and systematic approach to energy fluxes in wave turbulence.
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影响因子:
8.6
作者:
G. Düring;C. Josserand;S. Rica
通讯作者:
S. Rica
影响因子:
3.5
作者:
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DOI:
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发表时间:
2002
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1016/j.physd.2017.09.001
发表时间:
2016
期刊:
arXiv: Fluid Dynamics
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
1988
期刊:
影响因子:
--
作者:
V. Zakharov;L. Piterbarg
通讯作者:
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