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The Richardson's Law in Large-Eddy Simulations of Boundary Layer flows

G. Gioia·G. Lacorata·E. P. Marques Filho·A. Mazzino·U. Rizza
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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 $t^3$ 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 $C_2\sim 0.5$ in close agreement with recent experiments and three-dimensional direct numerical simulations.

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G. Gioia, G. Lacorata, E. P. Marques Filho, A. Mazzino, U. Rizza. 2003-09-09. The Richardson's Law in Large-Eddy Simulations of Boundary Layer flows. https://doi.org/10.1023/b%3Aboun.0000039373.45669.68

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