Volume 47, Number 2, July II 1999
|Page(s)||152 - 157|
|Published online||01 December 2003|
Drude approach to anomalous diffusion: Application to Richardson dispersion in turbulent flows
Theoretische Polymerphysik, Universität Freiburg, Hermann-Herder Straße 3 D-79104 Freiburg i.Br., Germany
2 School of Chemistry, Tel Aviv University - Tel Aviv 69978, Israel
Accepted: 19 May 1999
We investigate two-particle dispersion in fully developed turbulence within a Lévy-walk stochastic model using a generalized Drude approach. Different from one-particle pictures we focus here on the time evolution of the relative distance between two particles. Based on the Kolmogorov-Obukhov energy spectrum and on the temporal correlations in the flow the Richardson t3-law follows as a Lévy-type enhancement of rare events.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 47.27.Qb – Turbulent diffusion
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.