Coherence of Velocity Fluctuations in Turbulent Flows

被引：3

作者：

Prabhudesai, G. ^{[1
]}

Perrard, S. ^{[1
]}

Petrelis, F. ^{[1
]}

Fauve, S. ^{[1
]}

机构：

[1] Univ Paris, Sorbonne Univ, PSL Res Univ, CNRS,Lab Phys,Ecole Normale Super, F-75005 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 01期

关键词：

WIND; MODELS;

D O I：

10.1103/PhysRevLett.128.014501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the spatiotemporal quantity of coherence for turbulent velocity fluctuations at spatial distances of the order or larger than the integral length scale l0. Using controlled laboratory experiments, an exponential decay as a function of distance is observed with a decay rate that depends on the flow properties. The same law is observed in two different flows, indicating that it can be a generic property of turbulent flows.

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页数：5

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