Deciphering the Role of Small-Scale Inhomogeneity on Geophysical Flow Structuration: A Stochastic Approach

WERNER BAUER; PRANAV CHANDRAMOULI; BERTR; CHAPRON; LONG LI; ETIENNE MEMIN

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Deciphering the Role of Small-Scale Inhomogeneity on Geophysical Flow Structuration: A Stochastic Approach

机译：解密小规模不均匀性对地球物理流动结构的作用：随机方法

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An important open question in fluid dynamics concerns the effect of small scales in structuring a fluid flow. In oceanic or atmospheric flows, this is aptly captured in wave-current interactions through the study of the well-known Langmuir secondary circulation. Such wave-current interactions are described by the Craik-Leibovich system, in which the action of a wave-induced velocity, the Stokes drift, produces a so-called "vortex force" that causes streaking in the flow. In this work, we show that these results can be generalized as a generic effect of the spatial inhomogeneity of the statistical properties of the small-scale flow components. As demonstrated, this is well captured through a stochastic representation of the flow.

机译：流体动力学中的一个重要开放问题涉及小尺度在结构化流体流动方面的效果。在海洋或大气流动中，通过研究众所周知的Langmuir二级循环，在波浪电流相互作用中恰当地捕获。这种波电流相互作用由Craik-Leibovich系统描述，其中波引起的速度，斯托克斯漂移的作用产生了所谓的“涡旋力”，其导致流动中的条纹。在这项工作中，我们表明这些结果可以作为小规模流量分量的统计特性的空间不均匀性的通用效果。如图所示，通过流动的随机表示，这很好地捕获。

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《Journal of Physical Oceanography》 |2020年第4期|983-1003|共21页
作者
WERNER BAUER; PRANAV CHANDRAMOULI; BERTR; CHAPRON; LONG LI; ETIENNE MEMIN;
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Inria/IRMAR Campus universitaire de Beaulieu Rennes France;

Inria/IRMAR Campus universitaire de Beaulieu Rennes France;

Ifremer LOPS Pointe du Diable Plouzane France;

Ifremer LOPS Pointe du Diable Plouzane France;

Inria/IRMAR Campus universitaire de Beaulieu Rennes France;

Inria/IRMAR Campus universitaire de Beaulieu Rennes France;

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Deciphering the Role of Small-Scale Inhomogeneity on Geophysical Flow Structuration: A Stochastic Approach

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