Clustering and collision of inertial particles in random velocity fields
Statistical Mechanics
2009-11-13 v4 Chaotic Dynamics
Abstract
The influence of clustering on the collision rate of inertial particles in a smooth random velocity field, mimicking the smaller scales of a turbulent flow, is analyzed. For small values of the the ratio between the relaxation time of the particle velocity and the characteristic time of the field, the effect of clusters is to make more energetic collisions less likely. The result is independent of the flow dimensionality and is due only to the origin of collisions in the process of caustic formation.
Keywords
Cite
@article{arxiv.0801.3584,
title = {Clustering and collision of inertial particles in random velocity fields},
author = {Piero Olla},
journal= {arXiv preprint arXiv:0801.3584},
year = {2009}
}
Comments
4 pages, 3 figures, revtex4