2026-04-17T06:35:34Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/187422025-11-19T20:34:09Zcom_2072_1057col_2072_478796col_2072_478823col_2072_478917

00925njm 22002777a 4500 dc Reigada Sanz, Ramon author Martí Pérez, Arturo C. author Sokolov, Igor M., 1958- author Sagués i Mestre, Francesc author Sancho, José M. author 2011-07-07T12:51:44Z 2011-07-07T12:51:44Z 2000 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. Física estadística Termodinàmica Sistemes dinàmics diferenciables Dinàmica de fluids Statistical physics Thermodynamics Differentiable dynamical systems Fluid dynamics Particle dispersion in synthetic turbulent flows