INTERMITTENT DISSIPATION OF A PASSIVE SCALAR IN TURBULENCE

Authors
CHERTKOV M FALKOVICH G KOLOKOLOV I
Citation
M. Chertkov et al., INTERMITTENT DISSIPATION OF A PASSIVE SCALAR IN TURBULENCE, Physical review letters, 80(10), 1998, pp. 2121-2124
Citations number
13
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
10
Year of publication
1998
Pages
2121 - 2124
Database
ISI
SICI code
0031-9007(1998)80:10<2121:IDOAPS>2.0.ZU;2-#
Abstract
The probability density function (PDF) of passive scalar dissipation P (epsilon) is found analytically in the limit of large Peclet and Prand tl numbers (Batchelor-Kraichnan regime) in two dimensions. The tail of PDF at epsilon >> [epsilon] is shown to be stretched exponent ln P(ep silon) proportional to epsilon(1/3); at epsilon << [epsilon], P propor tional to 1/root epsilon.