Heavy particle concentration in turbulence at dissipative and inertial scales (Articolo in rivista)

Type
Label
  • Heavy particle concentration in turbulence at dissipative and inertial scales (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.98.084502 (literal)
Alternative label
  • Bec, J; Biferale, L; Cencini, M; Lanotte, A; Musacchio, S; Toschi, F (2007)
    Heavy particle concentration in turbulence at dissipative and inertial scales
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bec, J; Biferale, L; Cencini, M; Lanotte, A; Musacchio, S; Toschi, F (literal)
Pagina inizio
  • 845021 (literal)
Pagina fine
  • 845021 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 98 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Observ Cote Azur, CNRS, UMR6202, F-06304 Nice 4, France; Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy; Univ Roma Tor Vergata, Ist Nazl Fis Nucl, I-00133 Rome, Italy; Univ Roma La Sapienza, INFM, CNR, SMC,Dept Phys, I-00185 Rome, Italy; CNR, ISC, I-00185 Rome, Italy; Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy; ISAC, CNR, I-73100 Lecce, Italy; Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel; Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy; IAC, CNR, I-00161 Rome, Italy (literal)
Titolo
  • Heavy particle concentration in turbulence at dissipative and inertial scales (literal)
Abstract
  • Spatial distributions of heavy particles suspended in an incompressible isotropic and homogeneous turbulent flow are investigated by means of high resolution direct numerical simulations. In the dissipative range, it is shown that particles form fractal clusters with properties independent of the Reynolds number. Clustering is there optimal when the particle response time is of the order of the Kolmogorov time scale tau(eta). In the inertial range, the particle distribution is no longer scale invariant. It is, however, shown that deviations from uniformity depend on a rescaled contraction rate, which is different from the local Stokes number given by dimensional analysis. Particle distribution is characterized by voids spanning all scales of the turbulent flow; their signature in the coarse-grained mass probability distribution is an algebraic behavior at small densities. (literal)
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