Flow regimes of a fluid driven granular suspension (Articolo in rivista)

Type
Label
  • Flow regimes of a fluid driven granular suspension (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10035-011-0295-y (literal)
Alternative label
  • Romain Bureau 1, Samuel Brand 1, Robin C. Ball 1, Mario Nicodemi 2 (2012)
    Flow regimes of a fluid driven granular suspension
    in Granular matter (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Romain Bureau 1, Samuel Brand 1, Robin C. Ball 1, Mario Nicodemi 2 (literal)
Pagina inizio
  • 175 (literal)
Pagina fine
  • 178 (literal)
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  • 14 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
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  • 2 (literal)
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  • 1. Department of Physics and Complexity Science Centre, University of Warwick, Coventry, UK 2. Dip.to di Scienze Fisiche, Universit√° di Napoli \"Federico II\", CNR-SPIN, INFN, Napoli, Italy (literal)
Titolo
  • Flow regimes of a fluid driven granular suspension (literal)
Abstract
  • We discuss molecular dynamics simulations of a granular suspension driven in a channel by an embedding fluid. The flow has three different regimes: it is disordered at small packing fractions, ; above a transition point, TeX , flows becomes ordered in layers, but only in a fraction of samples; at higher TeX , if ordering is avoided, jamming is also encountered. In the disordered flow regime the velocity profile is power law, consistent with an Ostwald-de Waele constitutive relation. In the ordered regime, flow is concentrated in the bulk in a nearly solid plug having a flat velocity profile, with narrow shear regions at the boundaries. Interestingly, velocity fluctuations are approximately linear in the velocity in all regimes. (literal)
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