Florencia G. Escudero Acuña, Marcela C. Villagrán Olivares, Jesica G. Benito, Ana M. Vidales
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Kinematics of the discharge of flat particles from model silos
The present work aims at two main objectives: validation of former equations developed for predicting the discharge flow of particles from silos but, in this case, for flat (oblate) lentil grains, and characterization of the kinematics of those grains at the outlet of the silo for both mass and funnel flow regimes. Special emphasis is placed in describing the way in which the flat grains arrange in their way out of the silo opening. This is presented through a spatiotemporal analysis of the particles at the outlet of the hopper. Results demonstrated that, although the collective behavior of the flow can be represented by those theoretical approaches, the vertical velocity distributions during mass flow regime are incorrectly described by a continuum perspective and have to be revised. On the other hand, the parabolic vault hypothesis seems to be still adequate for describing the velocity profile in the funnel flow regime.
期刊介绍：
Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science.
These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations.
>> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa.
The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.
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