CONDITIONAL VELOCITY PDF IN 3-D TURBULENCE

Authors
GAGNE Y MARCHAND M CASTAING B
Citation
Y. Gagne et al., CONDITIONAL VELOCITY PDF IN 3-D TURBULENCE, Journal de physique. II, 4(1), 1994, pp. 1-8
Citations number
14
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Mechanics
Journal title
Journal de physique. II → ACNP
ISSN journal
11554312
Volume
4
Issue
1
Year of publication
1994
Pages
1 - 8
Database
ISI
SICI code
1155-4312(1994)4:1<1:CVPI3T>2.0.ZU;2-X
Abstract
It is shown that the probability density functions of velocity increme nts at small scale in turbulent flows turn to an universal (Gaussian) shape when conditioned to a precisely defined energy transfer rate eps ilon(l). The standard deviation sigma(epsilon(l)) of this distribution depends on epsilon(l) following a Kolmogorov like relation sigma3 = C (epsilon(l)).l with a Reynolds number dependent coefficient C.