Effects of elongated particles rotation on discharge flow of mixed granular systems

Zhu, Lizhuo; Ning-sheng, Wang; Lu, Haifeng

doi:10.1016/j.cherd.2019.09.015

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“…In a recent experimental work [28] it was observed that the addition of elongated rod shaped particles to a quasi-2D granular system of glass beads increased the rate of discharge of the beads in hopper flow. As the number of rods initially increased, the rate of discharge increased.…”

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confidence: 98%

Depletion Forces in Athermally Sheared Mixtures of Frictionless Disks and Rods in Two Dimensions

Marschall,

Teitel

2020

Preprint

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We carry out numerical simulations to study uniformly sheared two-dimensional suspensions consisting of a of mixture of athermal, frictionless, circular disks and elongated rods. We find that shear induced fluctuations lead to depletion forces that cause rods to group in parallel oriented clusters. As the fraction of rods increases, this clustering increases, leading to an increase in the average rate of rotation of the rods, and a decrease in the magnitude of their nematic ordering.

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confidence: 98%