Size segregation in granular media induced by phase transition (Articolo in rivista)

Type
Label
  • Size segregation in granular media induced by phase transition (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.95.078001 (literal)
Alternative label
  • M. Tarzia; A. Fierro; M. Nicodemi; M. Pica Ciamarra; A. Coniglio (2005)
    Size segregation in granular media induced by phase transition
    in Physical review letters (Print); American Physical Society (APS), College Pk (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. Tarzia; A. Fierro; M. Nicodemi; M. Pica Ciamarra; A. Coniglio (literal)
Pagina inizio
  • 078001-1 (literal)
Pagina fine
  • 078001-4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prl.aps.org/abstract/PRL/v95/i7/e078001 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 95 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [M. Tarzia; A. Fierro; M. Nicodemi; M. Pica Ciamarra; A. Coniglio] Univ Naples Federico II, Dipartimento Sci Fis, INFM, I-80126 Naples, Italy; [M. Nicodemi; A. Coniglio] INFN, I-80126 Naples, Italy; [A. Fierro; M. Nicodemi; A. Coniglio] INFM Coherentia, I-80126 Naples, Italy (literal)
Titolo
  • Size segregation in granular media induced by phase transition (literal)
Abstract
  • In order to study analytically the nature of the size segregation in granular mixtures, we introduce a mean field theory in the framework of a statistical mechanics approach, based on Edwards' original ideas. For simplicity we apply the theory to a lattice model for a hard sphere binary mixture under gravity, and we find a new purely thermodynamic mechanism that gives rise to the size segregation phenomenon. By varying the number of small grains and the mass ratio, we find a crossover from the Brazil nut to the reverse Brazil nut effect, which becomes a true phase transition when the number of small grains is larger then a critical value. We suggest that this transition is induced by the effective attraction between large grains due to the presence of small ones (depletion force). Finally the theoretical results are confirmed by numerical simulations of the 3d system under taps. (literal)
Editore
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Editore di
data.CNR.it