Clustering and collisions of heavy particles in random smooth flows (Articolo in rivista)

Type
Label
  • Clustering and collisions of heavy particles in random smooth flows (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.1940367 (literal)
Alternative label
  • J. Bec; A. Celani; M. Cencini; S. Musacchio (2005)
    Clustering and collisions of heavy particles in random smooth flows
    in Physics of fluids (1994)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • J. Bec; A. Celani; M. Cencini; S. Musacchio (literal)
Pagina inizio
  • 073301-1 (literal)
Pagina fine
  • 073301-11 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pof.aip.org/resource/1/phfle6/v17/i7/p073301_s1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (J. Bec) 1 Dipartimento di Fisica, Università di Roma \"La Sapienza,\" Piazzale Aldo Moro, 2 I-00185 Roma, Italy and Département Cassiopée, Observatoire de la Côte d'Azur, Boîte Postale 4229, 06304 Nice Cedex 4, France (A. Celani) 2 Département Cassiopée, Observatoire de la Côte d'Azur, Boîte Postale 4229, 06304 Nice Cedex 4, France and CNRS, INLN, 1361 Route des Lucioles, 06560 Valbonne, France (M. Cencini) 3 Istituto dei Sistemi Complessi ISC-CNR, Via dei Taurini, 19 I-00185 Roma, Italy and SMC-INFM Dipartimento di Fisica, Universit à di Roma \"La Sapienza\", Piazzale Aldo Moro, 2 I-00185 Roma, Italy (S. Musacchio) 4 Dipartimento di Fisica, Università di Roma \"La Sapienza,\" Piazzale Aldo Moro, 2 I-00185 Roma, Italy and SMC-INFM Dipartimento di Fisica, Universit à di Roma \"La Sapienza\" Piazzale Aldo Moro, 2 I-00185 Roma, Italy (literal)
Titolo
  • Clustering and collisions of heavy particles in random smooth flows (literal)
Abstract
  • Finite-size impurities suspended in incompressible flows distribute inhomogeneously, leading to a drastic enhancement of collisions. A description of the dynamics in the full position-velocity phase space is essential to understand the underlying mechanisms, especially for polydisperse suspensions. These issues are studied here for particles much heavier than the fluid by means of a Lagrangian approach. It is shown that inertia enhances collision rates through two effects: correlation among particle positions induced by the carrier flow and uncorrelation between velocities due to their finite size. A phenomenological model yields an estimate of collision rates for particle pairs with different sizes. This approach is supported by numerical simulations in random flows. (literal)
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