Granular Matter

, Volume 14, Issue 2, pp 175–178 | Cite as

Flow regimes of a fluid driven granular suspension

  • Romain Bureau
  • Samuel Brand
  • Robin C. Ball
  • Mario Nicodemi
Original Paper


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, \({\phi}\); above a transition point, \({\phi_m}\), flows becomes ordered in layers, but only in a fraction of samples; at higher \({\phi}\), 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.


Granular suspensions Rheology Computer simulations 


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Romain Bureau
    • 1
  • Samuel Brand
    • 1
  • Robin C. Ball
    • 1
  • Mario Nicodemi
    • 2
  1. 1.Department of Physics and Complexity Science CentreUniversity of WarwickCoventryUK
  2. di Scienze FisicheUniversitá di Napoli “Federico II”, CNR-SPIN, INFNNapoliItaly

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