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Discrete and continuum modeling of granular flow in silo discharge
Tian, Tian1,2,3; Su, Jinglin1; Zhan, Jinhui1; Geng, Shujun1,2; Xu, Guangwen1; Liu, Xiaoxing1,2
2018-02-01
发表期刊PARTICUOLOGY
ISSN1674-2001
卷号36页码:127-138
摘要Granular material discharge from a flat-bottomed silo has been simulated by using continuum modeling and a three-dimensional discrete-element method (DEM). The predictive abilities of three commonly used frictional viscosity models (Schaeffer, S-S, and mu(I)) were evaluated by comparing them with the DEM data. The funnel-flow pattern (type C) and the semi-mass-flow pattern (type B) that was predicted by DEM simulations can be represented when the Schaeffer or mu(1) model is used, whereas the S-S model gives a consistent type-B flow pattern. All three models over-estimate the discharge rate compared with the DEM. The profiles of the solids volume fraction and the vertical velocity above the outlet show that the larger discharge rates given by the Schaeffer and mu(I) model result from an over-estimation of volume fraction, whereas the deviation in the S-S model stems from the failure to predict a solid vertical velocity and a volume fraction. (C) 2017 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词Silo Flow Pattern Discharge Rate Discrete-element Model Frictional Viscosity Model
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.partic.2017.04.001
收录类别SCI
语种英语
关键词[WOS]ELEMENT METHOD ; FRICTIONAL STRESS ; FLUIDIZED-BEDS ; KINETIC MODEL ; CRUCIAL ROLE ; WALL STRESS ; FUNNEL FLOW ; DENSE ; HOPPERS ; SIMULATION
WOS研究方向Engineering ; Materials Science
WOS类目Engineering, Chemical ; Materials Science, Multidisciplinary
项目资助者National Natural Science Foundation of China(21576265) ; Chinese Academy of Sciences
WOS记录号WOS:000423653400012
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23979
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sinodanish Ctr Educ & Res, Beijing 100190, Peoples R China
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Tian, Tian,Su, Jinglin,Zhan, Jinhui,et al. Discrete and continuum modeling of granular flow in silo discharge[J]. PARTICUOLOGY,2018,36:127-138.
APA Tian, Tian,Su, Jinglin,Zhan, Jinhui,Geng, Shujun,Xu, Guangwen,&Liu, Xiaoxing.(2018).Discrete and continuum modeling of granular flow in silo discharge.PARTICUOLOGY,36,127-138.
MLA Tian, Tian,et al."Discrete and continuum modeling of granular flow in silo discharge".PARTICUOLOGY 36(2018):127-138.
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