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On the use of magnetic particles to enhance the flow of vibrated grains through narrow apertures
(2021-06-28)
The ow of grains through narrow apertures posses an extraordinary challenge: clogging. Strategies to alleviate the effect of clogging, such as the use of external vibration, are always part of the design of machinery for ...
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 ...