DEM simulations of vibrated sphere packings in slender prismatic containers

被引：23
作者：
Jaggannagari, Sujith Reddy [1 ]
Desu, Raghuram Karthik [2 ]
Reimann, Jorg [3 ]
Gan, Yixiang [4 ]
Moscardini, Marigrazia [5 ]
Annabattula, Ratna Kumar [1 ,6 ]
机构：
[1] Indian Inst Technol Madras, Dept Mech Engn, Chennai 600036, Tamil Nadu, India
[2] Natl Inst Technol, Dept Mech Engn, Tiruchirappalli 620015, Tamil Nadu, India
[3] Karlsruhe Inst Technol, Inst Appl Mat, D-76344 Eggenstein Leopoldshafen, Germany
[4] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia
[5] Univ Pisa, Dept Civil & Ind Engn, Pisa, Italy
[6] Indian Inst Technol Madras, Addit Mfg Grp, Ctr Excellence Mat & Mfg Futurist Mobil, Chennai 600036, Tamil Nadu, India
来源：
POWDER TECHNOLOGY | 2021年 / 393卷
关键词：
Discrete element method; Mono-sized particles; Polydisperse particles; Packing fraction; Slender prismatic containers; Void fraction; EFFECTIVE THERMAL-CONDUCTIVITY; DISCRETE ELEMENT METHOD; PEBBLE BED STRUCTURES; NUMERICAL-MODEL; SOLID BREEDER; VOID FRACTION; MECHANICS; PARTICLES; EVOLUTION; BINARY;
D O I：
10.1016/j.powtec.2021.06.033
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Discrete Element Method (DEM) simulations are carried out to investigate the packing structure of the vibrated mono-sized and polydisperse particle assemblies in slender prismatic containers. Quantities like void fraction distributions, coordination number distribution, Voronoi packing fraction distributions were analyzed. DEM simulations show excellent agreement with the experimental data. The transient response of the packing structure during the vibration of mono-sized spheres reveals that the crystallization starts at the walls. The packing structure's crystallinity enhances during vibration, increasing the packing density of the assembly. Vertical vibration is found to be more effective compared to lateral vibration. The packing structure is found to be independent of the container's orientation during the filling process. The influence of the ratio of the container dimensions to mean particle diameter (X/d(m)) and polydispersity (lambda) on the packing structure is analyzed. The results showed that the increase of X/dm ratio or lambda, increases the random arrangement of particles. (C) 2021 Elsevier B.V. All rights reserved.
引用
收藏
页码：31 / 59
页数：29
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