Modeling Segregation in Granular Flows.

@article{Umbanhowar2019ModelingSI,
  title={Modeling Segregation in Granular Flows.},
  author={Paul B. Umbanhowar and Richard M. Lueptow and Julio M. Ottino},
  journal={Annual review of chemical and biomolecular engineering},
  year={2019},
  volume={10},
  pages={
          129-153
        }
}
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 simulations of increasing accuracy and scale, experiments, and continuum models, in a variety of flows and for a variety of mixtures. Computer simulations-discrete element methods (DEM)-yield remarkably detailed views of granular flow and segregation. Conti-nuum models, however, offer the best possibility for parametric… 
Modelling segregation of bidisperse granular mixtures varying simultaneously in size and density for free surface flows
Abstract Flowing granular materials segregate due to differences in particle size (driven by percolation) and density (driven by buoyancy). Modelling the segregation of mixtures of large/heavy
Modelling segregation of flowing bidisperse granular mixtures varying simultaneously in size and density
Flowing granular materials segregate due to differences in particle size (driven by percolation) and density (driven by buoyancy). Modelling the segregation of mixtures of large/heavy particles and
Kinetic theory based segregation model for density-bidisperse dense granular flows
Individual constituent balance equations are often used to derive expressions for species specific segregation velocities in flows of dense granular mixtures. We propose an expression for the
A unified description of gravity- and kinematics-induced segregation forces in dense granular flows
Abstract Particle segregation is common in natural and industrial processes involving flowing granular materials. Complex, and seemingly contradictory, segregation phenomena have been observed for
Segregation forces in dense granular flows: closing the gap between single intruders and mixtures
TLDR
A semiempirical model for the segregation force in size-bidisperse sphere mixtures is developed that predicts the concentration below which the single-intruder assumption applies and provides an accurate description of the pressure partitioning between species.
Microscopic structure and dynamics study of granular segregation mechanism by cyclic shear
TLDR
It is found that both convection and arching effect play important roles in the segregation process in a cyclically sheared granular system with rigorously controlled experimental conditions, and one can quantitatively identify their respective contributions.
...
1
2
3
4
5
...