Dynamics and statistics of heavy particles in turbulent flows (Articolo in rivista)

Type
Label
  • Dynamics and statistics of heavy particles in turbulent flows (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/14685240600675727 (literal)
Alternative label
  • Cencini, M (a); Bec, J (b); Biferale, L. (c); L; Boffetta, G. (d); Celani, A. (e); Lanotte, AS (f); Musacchio, S. (e); Toschi, F. (g) (2006)
    Dynamics and statistics of heavy particles in turbulent flows
    in Journal of turbulence
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cencini, M (a); Bec, J (b); Biferale, L. (c); L; Boffetta, G. (d); Celani, A. (e); Lanotte, AS (f); Musacchio, S. (e); Toschi, F. (g) (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 16 (literal)
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  • http://www.tandfonline.com/doi/abs/10.1080/14685240600675727#.VSata5PQM80 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 7 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (a) SMC-INFM c/o Department of Physics University of Rome, 'La Sapienza', and CNR-ISC via dei Taurini, 19 I-00185, Rome, Italy (b) CNRS, Lab. Cassiopée, OCA, BP 4229, 06304 Nice Cedex 4, France (c) Department of Physics and INFN, University of Rome 'Tor Vergata', Rome, Italy (d) Department of Physics and INFN, University of Torino, Torino, Italy (e) CNRS, INLN, 1361 Route des Lucioles, F-06560, Valbonne, France (f) CNR-ISAC, Sezione di Lecce, Str. Prov. Lecce-Monteroni, I-73100, Lecce, Italy (g) CNR-IAC, Viale del Policlinico 137, I-00161 Roma, Italy and INFN, Sezione di Ferrara, via G. Saragat 1, I-44100, Ferrara, Italy (literal)
Titolo
  • Dynamics and statistics of heavy particles in turbulent flows (literal)
Abstract
  • We present the results of direct numerical simulations (DNS) of turbulent flows seeded with millions of passive inertial particles. The maximum Reynolds number is Re-lambda similar to 200. We consider particles much heavier than the carrier flow in the limit when the Stokes drag force dominates their dynamical evolution. We discuss both the transient and the stationary regimes. In the transient regime, we study the growth of inhomogeneities in the particle spatial distribution driven by the preferential concentration out of intense vortex filaments. In the stationary regime, we study the acceleration fluctuations as a function of the Stokes number in the range St is an element of [0.16 : 3.3]. We also compare our results with those of pure fluid tracers ( St = 0) and we find a critical behavior of inertia for small Stokes values. Starting from the pure monodisperse statistics we also characterize polydisperse suspensions with a given mean Stokes, (St) over bar. (literal)
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