Translation and rotation of particles in different flow pattern areas of a silo  

作　　者：Ran Li Quan Chen Hongze Li Wenzheng Xiu Vladimir Zivkovic Hui Yang 

机构地区：[1]School of Medical Instrument and Food Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China [2]School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China [3]School of Engineering,Newcastle University,NE17RU,United Kingdom

出　　处：《Particuology》2023年第2期68-77,共10页颗粒学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (grant Nos.12002213,11972212,and 12072200);Shanghai Municipal Natural Science Foundation (grant No.20ZR1438800);Science and Technology Commission of Shanghai Municipality (grant No.19142201500).

摘　　要：The present paper reports the results obtained for translational and rotational velocity profiles of spherical particles for the mixed flow in a conical silo.The discrete element method(DEM)based on Hertz-Mindlin(no slip)with RVD rolling friction contact model is used for simulations.Opposite correlations are found between translational and rotational velocities in different flow areas of the silo.In particular,the abrasion caused by rotation is dominant in the funnel flow area.In addition,increase of the mass flow rate of silo can effectively reduce the abrasion induced by rotation.This highlights that understanding of dynamic characteristics of particles is helpful for optimization of silos and reduction of granular material abrasion.

关 键 词：Translational velocity Rotational velocity Rolling contribution rate Mass flow index 

分 类 号：O35[理学—流体力学]