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Title: Particle dispersion in synthetic turbulent flows
Author: Reigada Sanz, Ramon
Martí Pérez, Arturo C.
Sokolov, Igor M., 1958-
Sagués i Mestre, Francesc
Sancho, José M.
Keywords: Física estadística
Sistemes dinàmics diferenciables
Dinàmica de fluids
Statistical physics
Differentiable dynamical systems
Fluid dynamics
Issue Date: 2000
Publisher: The American Physical Society
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.
Note: Reproducció del document publicat a:
It is part of: Physical Review E, 2000, vol. 62, num. 4, p. 4997-5005
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ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)
Articles publicats en revistes (Física Quàntica i Astrofísica)

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