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Experimental proof of faster is slower in systems of frictional particles flowing through constrictions
(American Physical Society, 2015)
The “faster-is-slower” (FIS) effect was first predicted by computer simulations of the egress of pedestrians through a narrow exit [D. Helbing, I. J. Farkas, and T. Vicsek, Nature (London) 407, 487 (2000)]. FIS refers to ...
Clogging transition of vibration driven vehicles passing through constrictions
(American Physical Society, 2017)
We report experimental results on the competitive passage of elongated self-propelled vehicles rushing through a constriction. For the chosen experimental conditions, we observe the emergence of intermittencies similar to ...
Stability and conductivity of proppant packs during flowback in unconventional reservoirs: a CFD–DEM simulation study
(Elsevier B.V., 2021)
We present simulations using a coupled Computational Fluid Dynamics–Discrete Element Method (CFD–DEM)
approach for a slurry of millimeter-sized particles in water which is squeezed between two walls and then made
flow ...
Universal features of the stick-slip dynamics of an intruder moving through a confined granular medium
(2022-04-21)
Experiments and simulations of an intruder dragged by a spring through a two-dimensional annulus of granular
material exhibit robust force fluctuations. At low packing fractions (φ < φ0), the intruder clears an open ...
Differential equation for the flow rate of discharging silos based on energy balance
(2020-05)
Since the early work of Hagen in 1852 and Beverloo et al. in 1961, the flow rate of granular material
discharging through a circular orifice from a silo has been described by means of dimensional analysis
and experimental ...
A differential equation for the flow rate during silo discharge Beyond the Beverloo rule
(EPJ Web of Conferences, 2017)
We present a differential equation for the flow rate of granular materials during the discharge of a silo. This is based in the energy balance of the variable mass system in contrast with the traditional derivations based ...