Lagrangian acceleration of passive tracers in statistically-steady rotating turbulence
Fluid Dynamics
2013-07-29 v2
Abstract
The statistical properties of the Lagrangian acceleration vector of passive tracers in statistically-steady rotating turbulence is studied by Particle Tracking Velocimetry. Direct effects of the background rotation are the suppression of high-acceleration events parallel to the (vertical) rotation axis, the enhancement of high-acceleration events for the horizontal acceleration, and the strong amplification of the auto-correlation of the acceleration component perpendicular to both the rotation vector \Omega\ and local velocity vector u. The auto-correlation of the acceleration component in the plane set up by \Omega\ and u is only mildly enhanced.
Keywords
Cite
@article{arxiv.1307.6672,
title = {Lagrangian acceleration of passive tracers in statistically-steady rotating turbulence},
author = {Lorenzo Del Castello and Herman J. H. Clercx},
journal= {arXiv preprint arXiv:1307.6672},
year = {2013}
}
Comments
4 pages, 4 figures, 1 table