Isolating segregation mechanisms in a split-bottom cell

K. M. Hill, Yi Fan

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We study the segregation of mixtures of particles in a split-bottom cell to isolate three possible driving mechanisms for segregation of densely sheared granular mixtures: gravity, porosity, and velocity gradients. We find that gravity alone does not drive segregation associated with particle size without a sufficiently large porosity or porosity gradient. A velocity gradient, however, appears to be capable of driving segregation associated with both particle size and material density. In all cases, the final segregation state is approached exponentially.

Original languageEnglish (US)
Article number088001
JournalPhysical Review Letters
Volume101
Issue number8
DOIs
StatePublished - Aug 21 2008

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