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Title: Discrete element method study on hopper discharge behaviors of binary mixtures of nonspherical particles
Authors: Zhao, Ya
Chew, Jia Wei
Keywords: Engineering::Chemical engineering
Issue Date: 2020
Source: Zhao, Y. & Chew, J. W. (2020). Discrete element method study on hopper discharge behaviors of binary mixtures of nonspherical particles. AIChE Journal, 66(8), e16254-.
Project: NRF2017-ITS002-013
Journal: AIChE Journal
Abstract: This study is aimed at unveiling the influence of binary mixtures of nonspherical particles on hopper discharge behavior, which remains poorly understood. The discrete element method (DEM) is employed to simulate seven particle types with aspect ratios between 0 and 2 (namely, a sphere, two ellipsoids, two cylinders, and two cuboids) with the same volume. Seven monodisperse systems and twelve binary-shape mixtures are assessed. For the monodisperse systems, particle shape is the dominant factor dictating discharge rate, compared to other factors like aspect ratio, preferential orientation, and packing. Regarding the binary-shape mixtures, the discharge rates are similar for all twelve mixtures, reflecting a surprising lack of shape effects, which in turn means the negligible impact of solid volume fraction, aspect ratio, and segregation extent. Moreover, collision force is generally negatively correlated with discharge rate.
ISSN: 0001-1541
DOI: 10.1002/aic.16254
Rights: © 2020 American Institute of Chemical Engineers. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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