IFLYSIB   05383
INSTITUTO DE FISICA DE LIQUIDOS Y SISTEMAS BIOLOGICOS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Flow and clogging of polygonal grains
Autor/es:
GOLDBERG, E.; PUGNALONI, L.A.; CARLEVARO, C. M.
Lugar:
Pamplona,
Reunión:
Congreso; Traffic and Granular Flow; 2019
Resumen:
We study, using discrete element method (DEM) simulations, the discharge of polygonal grains through an aperture at the bottom of a two-dimensional silo. We consider the effect of the grain shape on the flow rate (for large apertures) and the clogging of the flow (for small apertures). We found that the mass flow rate is lower for polygons than it is for disks due to a combination of a smaller packing fraction and reduced average vertical velocity. On the other hand, the probability of clogging presents a non-linear behavior as a function of the number of vertexes. We discuss the critical role played by the criteria used to decide when two particles of different shape are considered to be of equal size.