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Title

Clustering transition in a system of particles self-consistently driven by a shear flow

AuthorsLópez, Cristóbal
KeywordsExactly Solvable and Integrable Systems
Chaotic Dynamics
[PACS] Nonlinear dynamics and nonlinear dynamical systems
[PACS] Transport processes
Issue Date6-Dec-2004
PublisherAmerican Physical Society
CitationPhysical Review E 70, 066205 (2004)
AbstractWe introduce a simple model of active transport for an ensemble of particles driven by an external shear flow. Active refers to the fact that the flow of the particles is modified by the distribution of particles itself. The model consists in that the effective velocity of every particle is given by the average of the external flow velocities felt by the particles located at a distance less than a typical radius, R. Numerical analysis reveals the existence of a transition to clustering depending on the parameters of the external flow and on R. A continuum description in terms of the number density of particles is derived, and a linear stability analysis of the density equation is performed in order to characterize the transitions observed in the model of interacting particles.
Description5 pages, 2 figures (final publisher version), 11 pages, 2 figures (post-print version).-- PACS nrs.: 05.45.−a, 05.60.−k.-- ArXiv pre-print available at: http://arxiv.org/abs/nlin/0409028v1
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevE.70.066205
URIhttp://hdl.handle.net/10261/7534
DOI10.1103/PhysRevE.70.066205
ISSN1539-3755
Appears in Collections:(IFISC) Artículos
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