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SUMMARY:Lagrangian velocity statistics in turbulence: theory\, experiments
  and numerics - Biferale\, L (Tor Vergata)
DTSTART:20081002T080000Z
DTEND:20081002T083000Z
UID:TALK13860@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:A detailed comparison between experimental and numerical data 
 of Lagrangian velocity structure functions in turbulent flows is presented
 . Thanks to the integration of information coming from experimental and nu
 merical data\, a quantitative understanding of the velocity scaling proper
 ties over a wide range of time scales and Reynolds numbers can be achieved
 . Intermittency changes if measured close to the Kolmogorov time scales or
  at larger time lags. A quantitative comparison with prediction from multi
 fractal theory for Lagrangian turbulence will also be presented. These res
 ults shed some new insight on the relevance of vortex filaments for the st
 atistics of tracers and/or heavy/light particles in turbulence.
LOCATION:Seminar Room 1\, Newton Institute
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