Relative dispersion in fully developed turbulence: from Eulerian to Lagrangian statistics in synthetic flows
chao-dyn
2009-10-31 v1 Chaotic Dynamics
Abstract
The effect of Eulerian intermittency on the Lagrangian statistics of relative dispersion in fully developed turbulence is investigated. A scaling range spanning many decades is achieved by generating a multi-affine synthetic velocity field with prescribed intermittency features. The scaling laws for the Lagrangian statistics are found to depend on Eulerian intermittency in agreement with a multifractal description. As a consequence of the Kolmogorov's law, the Richardson's law for the variance of pair separation is not affected by intermittency corrections.
Keywords
Cite
@article{arxiv.chao-dyn/9803030,
title = {Relative dispersion in fully developed turbulence: from Eulerian to Lagrangian statistics in synthetic flows},
author = {G. Boffetta and A. Celani and A. Crisanti and A. Vulpiani},
journal= {arXiv preprint arXiv:chao-dyn/9803030},
year = {2009}
}
Comments
4 pages RevTeX, 4 PostScript figures