Author : AHMED MOHAMED ALI ASHOUR AHMED
CoAuthors : Balázs Szabó, Zsolt Kovács, Sandra Wegner, David Fischer, Ralf Stannarius, and Tamás Börzsönyi
Source : PHYSICAL REVIEW E
Date of Publication : 06/2018
Abstract :
The stationary flow field in a quasi-two-dimensional hopper is investigated experimentally. The behavior of
materials consisting of beads and elongated particles with different aspect ratio is compared.We show, that while
the vertical velocity in the flowing region can be fitted with a Gaussian function for beads, in the case of elongated
grains the flowing channel is narrower and is bordered with sharper velocity gradient. For this case, we quantify
deviations from the Gaussian velocity profile. Relative velocity fluctuations are considerably larger and slower
for elongated grains.
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