Probability density functions of the enstrophy flux in two dimensional grid turbulence

Authors
Kellay, H Bruneau, CH Wu, XL
Citation
H. Kellay et al., Probability density functions of the enstrophy flux in two dimensional grid turbulence, PHYS REV L, 84(8), 2000, pp. 1696-1699
Citations number
26
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
84
Issue
8
Year of publication
2000
Pages
1696 - 1699
Database
ISI
SICI code
0031-9007(20000221)84:8<1696:PDFOTE>2.0.ZU;2-X
Abstract
Probability density functions of the enstrophy flux in two dimensional grid turbulence are found to be strongly non-Gaussian and can be mimicked by st retched exponential functions. Evidence of this behavior is found in experi ments using turbulent soap films and numerical simulations. The enstrophy f lux itself is found to be constant for a range of scales corresponding to t he enstrophy cascade.