CAS OpenIR  > 多相复杂系统国家重点实验室
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
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume36Pages:127-138
AbstractGranular 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.
KeywordSilo Flow Pattern Discharge Rate Discrete-element Model Frictional Viscosity Model
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2017.04.001
Indexed BySCI
Language英语
WOS KeywordELEMENT METHOD ; FRICTIONAL STRESS ; FLUIDIZED-BEDS ; KINETIC MODEL ; CRUCIAL ROLE ; WALL STRESS ; FUNNEL FLOW ; DENSE ; HOPPERS ; SIMULATION
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21576265) ; Chinese Academy of Sciences
WOS IDWOS:000423653400012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23979
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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