Shear Effects in Nonhomogeneous Turbulence

F. Toschi, E. Lévêque, and G. Ruiz-Chavarria
Phys. Rev. Lett. 85, 1436 – Published 14 August 2000
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Abstract

Motivated by recent experimental and numerical results, a simple unifying picture of intermittency in turbulent shear flows is suggested. Integral structure functions (ISF), taking into account explicitly the shear intensity, are introduced on phenomenological grounds. ISF can exhibit a universal scaling behavior, independent of the shear intensity. This picture is in satisfactory agreement with both experimental and numerical data. Possible extension to convective turbulence and implication on closure conditions for large-eddy simulation of nonhomogeneous flows are briefly discussed.

  • Received 18 January 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.1436

©2000 American Physical Society

Authors & Affiliations

F. Toschi1, E. Lévêque2, and G. Ruiz-Chavarria3

  • 1Department of Applied Physics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands INFM, Unitá di Tor Vergata, Roma, Italy
  • 2Laboratoire de Physique CNRS, ENS de Lyon, 69364 Lyon Cedex 07, France
  • 3Departamento de Física, Facultad de Ciencias, UNAM, 04510 Mexico D. F., Mexico

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Issue

Vol. 85, Iss. 7 — 14 August 2000

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