Linking bottleneck clogging with flow kinematics in granular materials: the role of silo width
Palabras clave : 
Área Física y Ciencias del Espacio
Fecha incorporación: 
2017
ISSN: 
2469-990X
Nota: 
Creative Commons Attribution License
Cita: 
Gella, D.; Maza-Ozcoidi, D. (Diego Martín); Zuriguel-Ballaz, I. (Iker); et al. "Linking bottleneck clogging with flow kinematics in granular materials: the role of silo width". Physical review fluids. 2017. 2 (8), 084304
Resumen
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.

Ficheros en este registro:
Fichero: 
pdf.pdf
Descripción: 
Tamaño: 
1,96 MB
Formato: 
Adobe PDF


Los ítems de Dadun están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.