Prediction of segregation characterization based on granular velocity and concentration in rotating drum  

作　　者：Wenzheng Xiu Ra Li Quan Chen Qicheng Sun Vladimir Zivkovic Hui Yang 

机构地区：[1]School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China [2]School of Medical Instrument and Food Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China [3]State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing,100084,China [4]School of Engineering,Newcastle University,NE17RU,United Kingdom

出　　处：《Particuology》2023年第2期17-25,共9页颗粒学报（英文版）

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

摘　　要：In a binary granular system composed of two types of particles with different granule sizes and the same density,particle sorting occurs easily during the flow process.The segregation pattern structure is mainly affected by the granular velocity and granular concentration in the flow layer.This paper reports on the experimental velocity and concentration measurement results for spherical particles in a quasi-two-dimensional rotating drum.The relationship between the granular velocity along the depth direction of the flow layer and granular concentration was established to characterize structures with different degrees of segregation.The corresponding relationships between the granular velocity and concentration and the segregation pattern were further analyzed to improve the theoretical models of segregation(convection-diffusion model and continuous flow model)and provide a reference for granular segregation control in the production process.

关 键 词：Granular segregation Rotating drum Granular velocity Granular concentration 

分 类 号：TG1[金属学及工艺—金属学]