TY - JOUR
T1 - Isolating segregation mechanisms in a split-bottom cell
AU - Hill, K. M.
AU - Fan, Yi
PY - 2008/8/21
Y1 - 2008/8/21
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.101.088001
DO - 10.1103/PhysRevLett.101.088001
M3 - Article
AN - SCOPUS:50249175061
SN - 0031-9007
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 088001
ER -