About scaling properties of relative velocity between particles in turbulence

A.S. Lanotte, J. Bec, L. Biferale, M. Cencini, F. Toschi

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

We present results obtained from high-resolution direct numerical simulations (DNS) of incompressible, statistically homogeneous and isotropic turbulence, up to a Taylor scale based Reynolds number Re¿ 200 and with millions of heavy particles with different inertia. In our set-up, particles are assumed to be spherical and rigid, they simply move by viscous forces, such as the Stokes drag. The velocity statistics is found to be extremely intermittent, with an almost bi-fractal behavior. Here, we consider also a new data analysis for the stationary distribution of rescaled longitudinal velocity difference and further assess the intermittent character of the heavy particles velocities, characterized by the presence of quasi-algebraic tails.
Original languageEnglish
Title of host publication13th European Turbulence Conference (ETC13)
Number of pages6
DOIs
Publication statusPublished - 2011

Publication series

NameJournal of Physics: Conference Series
Volume318
ISSN (Print)1742-6588

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