Multiparticle dispersion in fully developed turbulence (Articolo in rivista)

Type
Label
  • Multiparticle dispersion in fully developed turbulence (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Biferale L., Boffetta G., Celani A., Devenish B.J., Lanotte A., Toschi F. (2005)
    Multiparticle dispersion in fully developed turbulence
    in Physics of fluids (1994)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Biferale L., Boffetta G., Celani A., Devenish B.J., Lanotte A., Toschi F. (literal)
Pagina inizio
  • 111701 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Physics and INFN, University of Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy Dipartimento di Fisica Generale and INFN, Università degli Studi di Torino, Via Pietro Giuria 1, 10125 Torino, Italy and CNR-ISAC, Sezione di Torino, Corso Fiume 4, 10133 Torino, Italy CNRS, INLN, 1361 Route des Lucioles, 06560 Valbonne, France Department of Physics, University of Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy CNR-ISAC, Sezione di Lecce, Strada Prov. Lecce-Monteroni km. 1.200, 73100 Lecce, Italy Istituto per le Applicazioni del Calcolo, CNR, Viale del Policlinico 137, 00161 Rome, Italy and INFN Sezione di Ferrara, via G.Saragat 1, 44100 Ferrara, Italy (literal)
Titolo
  • Multiparticle dispersion in fully developed turbulence (literal)
Abstract
  • The statistical geometry of dispersing Lagrangian clusters of four particles (tetrahedra) is studied by means of high-resolution direct numerical simulations of three-dimensional homogeneous isotropic turbulence. We give evidence of a self-similar regime of shape dynamics characterized by almost two-dimensional, strongly elongated geometries. The analysis of four-point velocity-difference statistics and orientation shows that inertial-range eddies typically generate a straining field with a strong extensional component aligned with the elongation direction and weak extensional/compressional components in the orthogonal plane. (literal)
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