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Título:	Particle dispersion in synthetic turbulent flows
Autor/a:	Reigada Sanz, Ramon; Martí Pérez, Arturo C.; Sokolov, Igor M., 1958-; Sagués i Mestre, Francesc; Sancho, José M.
Otros autores:	Universitat de Barcelona
Abstract:	We study particle dispersion advected by a synthetic turbulent flow from a Lagrangian perspective and focus on the two-particle and cluster dispersion by the flow. It has been recently reported that Richardson¿s law for the two-particle dispersion can stem from different dispersion mechanisms, and can be dominated by either diffusive or ballistic events. The nature of the Richardson dispersion depends on the parameters of our flow and is discussed in terms of the values of a persistence parameter expressing the relative importance of the two above-mentioned mechanisms. We support this analysis by studying the distribution of interparticle distances, the relative velocity correlation functions, as well as the relative trajectories.
Materia(s):	-Física estadística -Termodinàmica -Sistemes dinàmics diferenciables -Dinàmica de fluids -Statistical physics -Thermodynamics -Differentiable dynamical systems -Fluid dynamics
Derechos:	(c) The American Physical Society, 2000
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	The American Physical Society
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