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Random vectorial fields representing the local structure of turbulence

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Date
2011
Dewey
Sciences connexes (physique, astrophysique)
Sujet
velocity field
Journal issue
Journal of Physics: Conference Series
Volume
318
Number
4
Publication date
2011
Article pages
n° 42002
Publisher
IOP
DOI
http://dx.doi.org/10.1088/1742-6596/318/4/042002
Conference name
13th European Turbulence Conference (ETC13)
Conference date
09-2011
Conference city
Varsovie
Conference country
Pologne
URI
https://basepub.dauphine.fr/handle/123456789/11858
Collections
  • CEREMADE : Publications
Metadata
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Author
Chevillard, Laurent
Robert, Raoul
Vargas, Vincent
Type
Communication / Conférence
Abstract (EN)
We propose a method to build up a random homogeneous, isotropic and incompressible turbulent velocity field that mimics turbulence in the inertial range. The underlying Gaussian field is given by a modified Biot-Savart law. The long range correlated nature of turbulence is then incorporated heuristically using a non linear transformation inspired by the recent fluid deformation imposed by the Euler equations. The resulting velocity field shows a non vanishing mean energy transfer towards the small scales and realistic alignment properties of vorticity with the eigenframe of the deformation rate.

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