Effects of vortex filaments on the velocity of tracers and heavy particles in turbulence (Articolo in rivista)

Type
Label
  • Effects of vortex filaments on the velocity of tracers and heavy particles in turbulence (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2338598 (literal)
Alternative label
  • Jérémie Bec (1); Luca Biferale (2); Massimo Cencini (3); Alessandra S. Lanotte (4); Federico Toschi (5) (2006)
    Effects of vortex filaments on the velocity of tracers and heavy particles in turbulence
    in Physics of fluids (1994)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Jérémie Bec (1); Luca Biferale (2); Massimo Cencini (3); Alessandra S. Lanotte (4); Federico Toschi (5) (literal)
Pagina inizio
  • 081702 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://scitation.aip.org/content/aip/journal/pof2/18/8/10.1063/1.2338598 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) CNRS UMR6202, Observatoire de la Côte d'Azur, BP4229, 06304 Nice Cedex 4, France (2) Dipartamento Fisica and INFN, Università \"Tor Vergata\" Via della Ricerca Scientifica 1, 00133 Roma, Italy (3) INFM-CNR, SMC Dipartimento di Fisica, Università \"La Sapienza\" Piazzale A. Moro, 2, 00185 Roma, Italy and ISC-CNR Via dei Taurini, 19, 00185 Roma, Italy (4) CNR-ISAC, Str. Prov. Lecce-Monteroni, 73100 Lecce, Italy (5) Istituto per le Applicazioni del Calcolo CNR, Viale del Policlinico 137, 00161 Roma, Italy and INFN, Sezione di Ferrara, Via G. Saragat 1, I-44100 Ferrara, Italy (literal)
Titolo
  • Effects of vortex filaments on the velocity of tracers and heavy particles in turbulence (literal)
Abstract
  • The Lagrangian statistics of heavy particles and of fluid tracers transported by a fully developed turbulent flow are investigated by means of high resolution direct numerical simulations. The Lagrangian velocity structure functions are measured in a time range spanning about three decades, from a tenth of the Kolmogorov time scale, tau(eta), up to a few large-scale eddy turnover times. Strong evidence is obtained that fluid tracer statistics are contaminated in the time range tau is an element of[1:10]tau(eta) by a bottleneck effect due to vortex filament. This effect is found to be significantly reduced for heavy particles which are expelled from vortices by inertia. These findings help in clarifying the results of a recent study by H. Xu [Phys. Rev. Lett. 96, 024503 (2006)], where differences between experimental and numerical results on scaling properties of fluid tracers were reported. (c) 2006 American Institute of Physics. (literal)
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