VELOCITY PROBABILITY DENSITY-FUNCTIONS IN DEVELOPED TURBULENCE - A FINITE REYNOLDS THEORY

Authors
CASTAING B CHABAUD B HEBRAL B NAERT A PEINKE J
Citation
B. Castaing et al., VELOCITY PROBABILITY DENSITY-FUNCTIONS IN DEVELOPED TURBULENCE - A FINITE REYNOLDS THEORY, Physica. B, Condensed matter, 194, 1994, pp. 695-696
Citations number
11
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
1
Pages
695 - 696
Database
ISI
SICI code
0921-4526(1994)194:<695:VPDIDT>2.0.ZU;2-P
Abstract
The probability density function of velocity differences deltav(i) = v (i)(x+r)-v(i)(x) in turbulent flows has a stricking evolution when r g oes from large scales to small dissipative ones developing wide non ga ussian wings. A formalism has been developed, generalizing the multifr actal formalism, which well describes this evolution for finite Reynol ds numbers. The extrapolation to infinite Reynolds number presents une xpected features.