The Richardson's Law in Large-Eddy Simulations of Boundary Layer flows
Fluid Dynamics
2009-11-10 v1 Chaotic Dynamics
Atmospheric and Oceanic Physics
Abstract
Relative dispersion in a neutrally stratified planetary boundary layer (PBL) is investigated by means of Large-Eddy Simulations (LES). Despite the small extension of the inertial range of scales in the simulated PBL, our Lagrangian statistics turns out to be compatible with the Richardson law for the average of square particle separation. This emerges from the application of nonstandard methods of analysis through which a precise measure of the Richardson constant was also possible. Its values is estimated as in close agreement with recent experiments and three-dimensional direct numerical simulations.
Keywords
Cite
@article{arxiv.physics/0309047,
title = {The Richardson's Law in Large-Eddy Simulations of Boundary Layer flows},
author = {G. Gioia and G. Lacorata and E. P. Marques Filho and A. Mazzino and U. Rizza},
journal= {arXiv preprint arXiv:physics/0309047},
year = {2009}
}
Comments
15 LaTex pages, 4 PS figures