Discrete element simulation of particle motion in ball mills based on similarity
Discrete element simulation of particle motion in ball mills based on similarity
复制标题
基于相似度的球磨机颗粒运动离散元模拟
DOI：
10.1016/j.powtec.2018.05.012
复制
发表时间：
2018-07-15
影响因子：
5.2
通讯作者：
Yang, Dongmin
中科院分区：
文献类型：
--
作者：
Jiang, Shengqiang;Ye, Yixuan;Yang, Dongmin
当考虑每个颗粒时，具有大量颗粒的球磨机的离散元（DE）模拟具有挑战性。相似原理可以用来减少模拟中的颗粒数量，同时仍然保持颗粒的精确流动行为。本文提出了颗粒重力加速度与磨机直径和磨机转速之间的标度关系。对不同磨机直径下的颗粒运动进行了一系列比例模拟。不同粒径和转速的米尔斯中单个颗粒和多个颗粒的一致运动验证了所提出的关系，这可能是一种有效的方法，以减少米尔斯的模拟规模。(C)2018爱思唯尔B.V.保留所有权利。
Discrete element (DE) simulation of a ball mill with a large number of particles is challenging when each particle is considered. Similarity principle could be adopted to reduce the number of particles in a simulation whilst still maintaining the accurate flow behaviour of particles. This paper presents a scaling relationship between particle gravitational acceleration, mill diameter and mill rotational speed. A series of scaled simulations of particle motion with different mill diameters are carried out. Consistent motion of a single particle and multiple particles in ball mills with different diameters and rotational speeds verifies the proposed relationship, which could be an effective approach to reduce the size of simulations for ball mills. (C) 2018 Elsevier B.V. All rights reserved.