Experimental and numerical investigation on the packing of binary mixtures of spheres and ellipsoids

被引：11
作者：
Li, C. X. [1 ,2 ]
Zhou, Z. Y. [3 ]
Zou, R. P. [3 ]
Pinson, D. [4 ]
Shen, Y. S. [2 ]
Yu, A. B. [3 ]
机构：
[1] Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
[2] Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia
[3] Monash Univ, Dept Chem Engn, ARC Res Hub Computat Particle Technol, Clayton, Vic 3800, Australia
[4] BlueScope Steel, Steelmaking Technol & Planning, POB 202, Port Kembla, NSW 2505, Australia
来源：
POWDER TECHNOLOGY | 2020年 / 360卷
基金：
澳大利亚研究理事会;
关键词：
Binary mixture; Discrete element method; Ellipsoids; Coordination number; Volume fraction; Equivalent packing diameter; DISCRETE PARTICLE SIMULATION; RANDOM CLOSE PACKING; DYNAMIC SIMULATION; PARTICULATE SYSTEMS; COORDINATION-NUMBER; TERNARY MIXTURES; HARD-SPHERES; POROSITY; SIZE; CRYSTALLIZATION;
D O I：
10.1016/j.powtec.2019.10.103
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The packing of binary mixtures of spheres and ellipsoids are investigated by both physical experiments and discrete element method (DEM) in this work. The DEM model is first validated through comparison with experimental results in terms of packing density. The equivalent packing diameter is confirmed to be much better than the equivalent volume diameter in the characterization of particle size of ellipsoids. Then some key variables, including size ratio and their volume fractions and particle shape, are chosen to study their effects on the coordination number of binary mixtures of spheres and ellipsoids. The results show that increasing the size or volume fraction of one component in the mixture will increase the contacts of this component with the particles around this component. At fixed solid volume fraction, an ellipsoidal particle has more contacts with the departure of particle shape from a perfect sphere. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：1210 / 1219
页数：10
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