Linking bottleneck clogging with flow kinematics in granular materials: The role of silo width
| Autor: | Diego Maza, Ralf Stannarius, Ahmed Ashour, D. Gella, Iker Zuriguel, Roberto Arévalo |
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| Přispěvatelé: | School of Physical and Mathematical Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Statistical Physics Flow (psychology) Computational Mechanics Mechanics Kinematics Granular material Kinetic energy 01 natural sciences 010305 fluids & plasmas Clogging Stress (mechanics) Physics::Fluid Dynamics Nonlinear Dynamics Modeling and Simulation parasitic diseases 0103 physical sciences Silo 010306 general physics Área Física y Ciencias del Espacio Simulation Body orifice |
| Zdroj: | Dadun. Depósito Académico Digital de la Universidad de Navarra instname |
| Popis: | We demonstrate experimentally that clogging in a silo correlates with some features of the particle velocities in the outlet proximities. This finding, that links the formation of clogs with a kinematic property of the system, is obtained by looking at the effect that the position of the lateral walls of the silo has on the flow and clogging behavior. Surprisingly, the avalanche size depends nonmonotonically on the distance of the outlet from the lateral walls. Apart from evidencing the relevance of a parameter that has been traditionally overlooked in bottleneck flow, this nonmonotonicity supposes a benchmark with which to explore the correlation of clogging probability with different variables within the system. Among these, we find that the velocity of the particles above the outlet and their fluctuations seem to be behind the nonmonotonicity in the avalanche size versus wall distance curve. Published version |
| Databáze: | OpenAIRE |
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