Discharge flow of a bidisperse granular media from a silo: Discrete particle simulations | Zendy

Yixian Zhou | Zendy; Pierre Ruyer | Zendy; Pascale Aussillous | Zendy

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Discharge flow of a bidisperse granular media from a silo: Discrete particle simulations

Author(s) -

Yixian Zhou,

Pierre Ruyer,

Pascale Aussillous

Publication year - 2015

Publication title -

physical review e

Language(s) - English

Resource type - Journals

eISSN - 1550-2376

pISSN - 1539-3755

DOI - 10.1103/physreve.92.062204

Subject(s) - silo , dispersity , particle (ecology) , flow (mathematics) , mechanics , work (physics) , materials science , granular material , mass fraction , two phase flow , physics , thermodynamics , geology , composite material , polymer chemistry , engineering , mechanical engineering , oceanography

International audienceDiscrete particle simulations are used to study two-dimensional discharge flow from a silo using bothmonodisperse and bidisperse mixtures. The density and the velocity profiles through the aperture are measured.In the monodisperse case, two particles’ diameters are studied for different outlet diameters. In the bidispersecase, we varied the fine mass fraction of the mixture. In all cases, the density and the velocity profiles are foundto follow the same self-similar law. Based on these observations and the previous work of Benyamine et al., aphysical model is proposed to describe the flow of bidisperse mixtures giving an explicit expression for the flowrate that is in good agreement with the results

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