Effect of granular shape on radial segregation in a two-dimensional drum  

作　　者：徐悦 李然 迟志鹏 修文正 孙其诚 杨晖 Yue Xu;Ran Li;Zhipeng Chi;Wenzheng Xiu;Qicheng Sun;Hui Yang(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255049,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;College of Medical Instruments,Shanghai University of Medicine and Health Sciences,Shanghai 201318,China)

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 Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255049,China [3]State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China [4]College of Medical Instruments,Shanghai University of Medicine and Health Sciences,Shanghai 201318,China

出　　处：《Chinese Physics B》2024年第4期509-514,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.12072200 and 12372384)。

摘　　要：Granular segregation is widely observed in nature and industry.Most research has focused on segregation caused by differences in the size and density of spherical grains.However,due to the fact that grains typically have different shapes,the focus is shifting towards shape segregation.In this study,experiments are conducted by mixing cubic and spherical grains.The results indicate that spherical grains gather at the center and cubic grains are distributed around them,and the degree of segregation is low.Through experiments,a structured analysis of local regions is conducted to explain the inability to form stable segregation patterns with obviously different geometric shapes.Further,through simulations,the reasons for the central and peripheral distributions are explained by comparing velocities and the number of collisions of the grains in the flow layer.

关 键 词：granular materials cubic grains shape segregation segregation mechanism 

分 类 号：O347.7[理学—固体力学]