Granular particle-shape heterogeneous mixtures discharging through a silo

Reddy, Anita; Kumar, Sonu; Reddy, K. Anki

doi:10.1017/jfm.2020.1071

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…For elongated particles, orientational ordering develops in the sheared regions [20], where the average alignment of the particles' long axis is nearly parallel to the flow direction, similarly to the observations in other shear flows [27,28]. For such grains, the flow field in the silo showed stronger funneling and larger velocity fluctuations [20,21,[23][24][25][26] and the probability of clog formation was also higher [29,30] than for spherical grains. Therefore, as a natural extension of these works, in this study we focus on determining the influence of the conveyor belt extraction system on the flow of elliptical grains, with special focus on grain orientation, ordering and the flow fields.…”

Section: Introductionsupporting

confidence: 68%

Elongated particles discharged with a conveyor belt in a two-dimensional silo

Fan,

Zuriguel,

Dijksman

et al. 2023

Phys. Rev. E

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Section: Introductionsupporting

confidence: 68%

Elongated particles discharged with a conveyor belt in a two-dimensional silo

Fan,

Zuriguel,

Dijksman

et al. 2023

Phys. Rev. E

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“…In all cases the Beverloo scaling with the 3/2 power of the orifice size has been confirmed. The Beverloo exponent remains the same for polydisperse systems (Zhou et al, 2015;Madrid et al, 2017;Reddy et al, 2021;Anyam and Anki Reddy, 2022) and even for non-circular particles (Liu et al, 2014;Goldberg et al, 2015;Börzsönyi et al, 2016;Gao et al, 2023), with one known exception being elongated grains in narrow silos that may display a flow rate which increases as the silo discharges (Pongó et al, 2022).…”

Section: Introductionmentioning

confidence: 98%

Flow rate in 2D silo discharge of binary granular mixtures: the role of ordering in monosized systems

Carlevaro,

Kozlowski,

Pugnaloni

2024

Front. Soft Matter

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A long-standing debate regarding the dynamics of silo discharge revolves around the use of mono-dispersed circular or spherical grains in simplified two-dimensional models. It is well-known that granular systems composed of particles of the same size can generate crystal or quasi-crystal domains with specific structural and dynamic behaviors. Can this ordering affect the flow rate to an extent that monosized systems cannot be good models for realistic materials? In this work, we present simulations of the discharge of two-dimensional silos filled with binary mixtures of circular grains that conserve the same mean particle size. We address the question of how ordering affects the mass flow rate, in particular considering the limit of mono-sized systems. We find that the typical hexagonal order observed does not affect the flow rate significantly. However, the flow rate does exhibit a weak, nonmonotonic dependence on packing bidispersity that correlates with changes in the outpouring speed of grains in the vicinity of the orifice.

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