Particle segregation mechanism of S-D system in a rotating drum

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Complex segregation occurs in a binary particle system with differing particle sizes and densities,particularly when the larger particles are heavier(S-D system,i.e.,size minus density system).Pre-dicting the segregation pattern driven by multiple mechanisms simultaneously is often challenging.This study explores the segregation mechanisms in a quasi-2D circular drum containing a S-D system,realizing a transition between the S-core and Core-and-band patterns by adjusting the drum rotation speed.During the transition of the segregation pattern,only the S-core pattern chiefly driven by the percolation mechanism is initially observed.As the rotation speed increases,the buoyancy mechanism and particle diffusion gradually strengthen,jointly driving the formation of the Core-and-band pattern.A dimensionless strength ratio,λ=H/h,where H and h respectively represent the diffusion and buoyancy strengths at length scales,is introduced to elucidate this transition.The Core-and-band pattern emerges when λ reached 1.4.

外文关键词：

Particle segregationS-D systemSegregation mechanisms competitionSegregation patternRotating drum

作者：

Erliang Xiao、Wei Zhang、Zhipeng Chi、Ran Li、Hui Yang

展开 >

作者单位：

School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China

College of Medical Instrumentation,Shanghai University of Medicine & Health Sciences,Shanghai,201318,China

基金：

Qingdao National Laboratory for Marine Science and TechnologyNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProgram of Shanghai Academic Research Leader

项目编号：

2015ASKJ01120722001237238423XD1421400

出版年：

2024

DOI：

10.1016/j.partic.2024.07.007

颗粒学报(英文版)

中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD

影响因子：0.632

ISSN：1674-2001

年,卷(期)：2024.93(10)