Drude approach to anomalous diffusion: Application to Richardson dispersion in turbulent flows

Authors
Sokolov, IM Blumen, A Klafter, J
Citation
Im. Sokolov et al., Drude approach to anomalous diffusion: Application to Richardson dispersion in turbulent flows, EUROPH LETT, 47(2), 1999, pp. 152-157
Citations number
22
Categorie Soggetti
Physics
Journal title
EUROPHYSICS LETTERS
ISSN journal
02955075 → ACNP
Volume
47
Issue
2
Year of publication
1999
Pages
152 - 157
Database
ISI
SICI code
0295-5075(199907)47:2<152:DATADA>2.0.ZU;2-L
Abstract
We investigate two-particle dispersion in fully developed turbulence within a Levy-walk stochastic model using a generalized Drude approach. Different from one-particle pictures we focus here on the time evolution of the rela tive distance between two particles. Based on the Kolmogorov-Obukhov energy spectrum and on the temporal correlations in the flow the Richardson t(3)- law follows as a Levy-type enhancement of rare events.