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Comparison of contact-force models for the simulation of collisions in DEM-based granular flow codes
Abstract The distinct element method (DEM) has proven to be reliable and effective in characterizing the behavior of particles in granular flow simulations. However, in the past, the influence ofExpand
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An improved integral non-linear model for the contact of particles in distinct element simulations
Abstract In this paper we consider a non-linear model for the elastic-frictional contact of spherical particles based on a modification of the classical Hertz–Mindlin no-slip solution. TheExpand
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Analytical solution for the problem of frictional-elastic collisions of spherical particles using the linear model
Abstract In the present paper, the problem of a frictional-elastic impact of two spheres is addressed with a novel approach. The set of equations arising from the linear model of the contactExpand
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Simulation of the layer inversion phenomenon in binary liquid--fluidized beds by DEM–CFD with a drag law for polydisperse systems
Abstract Liquid-fluidized beds of particular binary mixtures exhibit the layer inversion phenomenon, a peculiar result of the mechanical equilibrium developing in such multiphase systems. Because ofExpand
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Droplet detachment in cross-flow membrane emulsification: Comparison among torque- and force-based models
Due to the high product quality achievable, considerable attention of the researchers is being addressed to the cross-flow direct membrane emulsification (CDME). The key advantages of this processExpand
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Oxygen transport in hollow fibre membrane bioreactors for hepatic 3D cell culture: A parametric study
Abstract Hepatic cell cultures are exploited for different applications in liver disease studies, drug toxicity testing and bioartificial liver (BAL) devices. Despite the development of various 3DExpand
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Homogeneous and bubbling fluidization regimes in DEM-CFD simulations : Hydrodynamic stability of gas and liquid fluidized beds
In recent years coupled DEM–CFD models have been successfully utilized to simulate fluidized particle systems in the bubbling regime. In this paper we report on DEM–CFD simulations ofExpand
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A semi-empirical model for the drag force and fluid-particle interaction in polydisperse suspensions
Abstract Fluid flow through stationary or moving particle beds is a common process in industrial units. The two-phase hydrodynamics strongly influences the performances and characteristics ofExpand
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Structured Grid-Based Parallel Simulation of a Simple DEM Model on Heterogeneous Systems
We present different parallel grid-based implementations of a simple particle system with the purpose to evaluate its performances on multi- and many-core computational devices. Expand
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Modelling droplet formation in cross-flow membrane emulsification
In the present paper we illustrate applications of a new set of force balance equations able to predict the average size of a droplet forming during cross-flow membrane emulsification processes.Expand
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