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Modeling segregation in granular flows
PB Umbanhowar, RM Lueptow… - Annual review of …, 2019 - annualreviews.org
Accurate continuum models of flow and segregation of dense granular flows are now
possible. This is the result of extensive comparisons, over the last several years, of computer …
possible. This is the result of extensive comparisons, over the last several years, of computer …
Segregation of granular materials in bounded heap flow: A review
Y Fan, KV Jacob, B Freireich, RM Lueptow - Powder technology, 2017 - Elsevier
Heap formation occurs widely in industry when particulate materials are filled into vessels
such as hoppers, silos, bulk bags and bins. If the bulk materials are composed of particles …
such as hoppers, silos, bulk bags and bins. If the bulk materials are composed of particles …
Modelling size segregation of granular materials: the roles of segregation, advection and diffusion
Y Fan, CP Schlick, PB Umbanhowar… - Journal of fluid …, 2014 - cambridge.org
Predicting segregation of granular materials composed of different-sized particles is a
challenging problem. In this paper, we develop and implement a theoretical model that …
challenging problem. In this paper, we develop and implement a theoretical model that …
Theory for shear-induced segregation of dense granular mixtures
It is well known that a mixture of different sized particles will segregate in a gravitational field.
However, it has only recently been shown that a gradient of shear rate alone can drive …
However, it has only recently been shown that a gradient of shear rate alone can drive …
Phase transitions in shear-induced segregation of granular materials
We computationally study shear-induced segregation of different-sized particles in vertical
chute flow. We find that, for low solid fractions, large particles segregate toward regions of …
chute flow. We find that, for low solid fractions, large particles segregate toward regions of …
Granular convection in microgravity
N Murdoch, B Rozitis, K Nordstrom, SF Green… - Physical review …, 2013 - APS
We investigate the role of gravity on convection in a dense granular shear flow. Using a
microgravity-modified Taylor-Couette shear cell under the conditions of parabolic flight …
microgravity-modified Taylor-Couette shear cell under the conditions of parabolic flight …
Shear-driven segregation of dry granular materials with different friction coefficients
KA Gillemot, E Somfai, T Börzsönyi - Soft Matter, 2017 - pubs.rsc.org
We report the first experimental demonstration of bulk segregation in a shear-driven dry
granular mixture, where the particles only differ in their surface friction coefficients. We found …
granular mixture, where the particles only differ in their surface friction coefficients. We found …
Understanding and exploiting competing segregation mechanisms in horizontally rotated granular media
CRK Windows-Yule, BJ Scheper… - New journal of …, 2016 - iopscience.iop.org
The axial segregation of granular and particulate media is a well-known but little-understood
phenomenon with direct relevance to various natural and industrial processes. Over the past …
phenomenon with direct relevance to various natural and industrial processes. Over the past …
Segregation of large particles in dense granular flows suggests a granular Saffman effect
K van der Vaart, MP van Schrojenstein Lantman… - Physical review fluids, 2018 - APS
We report on the scaling between the lift force and the velocity lag experienced by a single
particle of different size in a monodisperse dense granular chute flow. The similarity of this …
particle of different size in a monodisperse dense granular chute flow. The similarity of this …
Shear-induced segregation of particles by material density
Recently, shear rate gradients and associated gradients in velocity fluctuations (eg, granular
temperatures or kinetic stresses) have been shown to drive segregation of different-sized …
temperatures or kinetic stresses) have been shown to drive segregation of different-sized …