Coherence of Velocity Fluctuations in Turbulent Flows

被引：4
|
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.
引用
收藏
页数：5
相关论文
共 50 条
  • [1] SPECTRA OF ANISOTROPIC TURBULENT VELOCITY AND TEMPERATURE FLUCTUATIONS IN TURBULENT WALL FLOWS.
    Kader, B.A.
    Yaglom, A.M.
    Fluid mechanics. Soviet research, 1987, 16 (06): : 89 - 102
  • [2] A phenomenological theory of Eulerian and Lagrangian velocity fluctuations in turbulent flows
    Chevillard, Laurent
    Castaing, Bernard
    Arneodo, Alain
    Leveque, Emmanuel
    Pinton, Jean-Francois
    Roux, Stephane G.
    COMPTES RENDUS PHYSIQUE, 2012, 13 (9-10) : 899 - 928
  • [3] Independent component analysis of streamwise velocity fluctuations in turbulent channel flows
    Wu, Ting
    He, Guowei
    THEORETICAL AND APPLIED MECHANICS LETTERS, 2022, 12 (04)
  • [4] SIMPLIFIED WAVE MODEL FOR THE TURBULENT VELOCITY FLUCTUATIONS IN VISCOUS SHEAR FLOWS
    PRIYMAK, VG
    MIYAZAKI, T
    DOKLADY AKADEMII NAUK, 1995, 340 (03) : 319 - 324
  • [5] PROBABILITY DISTRIBUTION OF VELOCITY FLUCTUATIONS IN TURBULENT FREE AND WALL FLOWS.
    Bukreyev, V.I.
    Zykov, V.V.
    Kostomakha, V.A.
    1600, (07):
  • [6] SPECTRAL ANALOGY BETWEEN TEMPERATURE AND VELOCITY FLUCTUATIONS IN SEVERAL TURBULENT FLOWS
    FULACHIER, L
    ANTONIA, RA
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1984, 27 (07) : 987 - 997
  • [7] Turbulent velocity and pressure fluctuations in gas turbine combustor exit flows
    Lubbock, R. J.
    Oldfield, M. L. G.
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 2018, 232 (04) : 337 - 349
  • [8] Independent component analysis of streamwise velocity fluctuations in turbulent channel flows
    Ting Wu
    Guowei He
    Theoretical & Applied Mechanics Letters, 2022, 12 (04) : 233 - 240
  • [9] Study on the analogy between velocity and temperature fluctuations in the turbulent rotating channel flows
    Yang, Zixuan
    Cui, Guixiang
    Xu, Chunxiao
    Zhang, Zhaoshun
    13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): WALL-BOUNDED FLOWS AND CONTROL OF TURBULENCE, 2011, 318
  • [10] SPECTRAL RELATIONSHIPS BETWEEN VELOCITY AND TEMPERATURE-FLUCTUATIONS IN TURBULENT SHEAR FLOWS
    FULACHIER, L
    ANTONIA, RA
    PHYSICS OF FLUIDS, 1983, 26 (08) : 2105 - 2108
12345