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Research Interests:
Clustering in Binary Rapid Granular Flows
Research Summary:
Granular flows, in which the effect of the interstitial fluid is
negligible, are common in both nature and industry, including avalanches,
chute flow, and mixing processes. Inelasticity of particles in granular
systems results in clusters, or high and low density regions within the
flow (Hopkins and Louge, Physics of Fluids A, vol 3, p47-57, 1991). The
formation of these clusters, in turn, affects the bulk behavior of the
system, namely system stresses (Liss and Glasser, Powder Technology, vol
116, p116-132, 2001). Since the study of clustering to this point has been
primarily focused on monodisperse particle-sized systems, the goal of my
graduate research is the investigation of clustering in binary
particle-sized rapid granular flows using two dimensional discrete
particle simulations of systems under simple shear. Specifically, the
answer to two questions is being sought. First, how do multiple particle
sizes affect cluster formation? Second, what are clusters of multiple
particle sizes composed of, i.e. which species of particle is dominant in
multiple particle size clusters.
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