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Relationship between mass discharge rate and granular temperature of silo flow with a variance of outlets

Lookup NU author(s): Dr Vladimir Zivkovic



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


A lower granular temperature zone near the orifice in silos was found by speckle visibility spectroscopy technology. Surprisingly, the values of granular temperature in this area are inversely proportional to the mass discharge rate (MDR). This finding that links the macroscopic MDR with mesoscopic dynamics temperature of the particle system, is obtained by looking at the effect that different outlet sizes of silos on MDR and granular temperature field. Apart from evidencing the relevance of a parameter that has been traditionally overlooked in silos, this relationship supposes a benchmark with which to explore the influence of small orifice sizes on MDR. Among these, we found that the frequency of intermittent clogging and their dependence on the size of the outlet.

Publication metadata

Author(s): Chen Q, Li R, Xiu WZ, Zivkovic V, Yang H

Publication type: Article

Publication status: Published

Journal: Particuology

Year: 2021

Pages: epub ahead of print

Online publication date: 24/05/2021

Acceptance date: 05/05/2021

Date deposited: 25/05/2021

ISSN (print): 1674-2001

Publisher: Elsevier


DOI: 10.1016/j.partic.2021.05.001


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