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End-wall effects on the mixing process of granular assemblies in a short rotating drum
Liu, Xiaoxing1,2; Ma, Wencheng3; Hou, Quanxun4; Zhang, Quan5; Gong, Baoping5; Feng, Yongjin5
2018-11-01
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume339Pages:497-505
Abstract

The mixing process of binary granular systems in a short rotating drum was investigated by performing discrete element simulations. The drum was asymmetrically operated with the left end wall being fixed and the right one rotated with the side wall. The modeled granular materials were made of particles with same size and density but different colors (red and yellow). These yellow and red particles were initially arranged side by side axially. We observed that the system inevitably went through a transient radial segregation state before reaching the final homogeneous mixing state. Depending on the filling degree and rotating speed, there existed totally three types of radial segregation pattern: yellow particles were enveloped radially by red particles (R-Y pattern), red partides were besieged radially by yellow particles (Y-R pattern), and the sandwich type R-Y-R pattern. Analyses of the axial flow field show that such transient radial segregating phenomeria were induced by different axial transporting characteristics of particles. The average axial motion of particles in the flowing layer and the location of the boundary between flowing layer and fixed bed layer influenced the transient radial configuration. (C) 2018 Elsevier B.V. All rights reserved.

KeywordGranular Material Rotating Drum Segregation Discrete Element Method (Dem) End-wall Effect Axial Flow
DOI10.1016/j.powtec.2018.08.027
Language英语
WOS KeywordAxial Segregation ; Cylinder ; Patterns ; Particles ; Friction ; Regime ; Mixers ; Media ; Band
Funding ProjectNSAF[U1630105] ; National Natural Science Foundation of China[21576265] ; National Key Research and Development Program of China[2017YFE0300602]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNSAF ; National Natural Science Foundation of China ; National Key Research and Development Program of China
WOS IDWOS:000449892500047
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26629
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Xiaoxing
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100080, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo City 454000, Henan, Peoples R China
4.China Univ Ming & Technol Beijing, Sch Chem & Environm Engn, Beijing 10083, Peoples R China
5.Southwestern Inst Phys, POB 432, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaoxing,Ma, Wencheng,Hou, Quanxun,et al. End-wall effects on the mixing process of granular assemblies in a short rotating drum[J]. POWDER TECHNOLOGY,2018,339:497-505.
APA Liu, Xiaoxing,Ma, Wencheng,Hou, Quanxun,Zhang, Quan,Gong, Baoping,&Feng, Yongjin.(2018).End-wall effects on the mixing process of granular assemblies in a short rotating drum.POWDER TECHNOLOGY,339,497-505.
MLA Liu, Xiaoxing,et al."End-wall effects on the mixing process of granular assemblies in a short rotating drum".POWDER TECHNOLOGY 339(2018):497-505.
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