Relative dispersion in fully developed turbulence: Lagrangian statistics in synthetic flows

, , and

1999 EDP Sciences
, , Citation G. Boffetta et al 1999 EPL 46 177 DOI 10.1209/epl/i1999-00242-8

0295-5075/46/2/177

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 intermittency in agreement with a multifractal description. As a consequence of the Kolmogorov law, the Richardson law for the variance of pair separation is not affected by intermittency corrections.

Export citation and abstract BibTeX RIS

10.1209/epl/i1999-00242-8