Discrete and continuum modeling of granular flow in silo discharge

doi:10.1016/j.partic.2017.04.001

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 多相复杂系统国家重点实验室

	Discrete and continuum modeling of granular flow in silo discharge
	Tian, Tian 1,2,3; Su, Jinglin 1; Zhan, Jinhui 1; Geng, Shujun 1,2; Xu, Guangwen 1; Liu, Xiaoxing 1,2
刊名	PARTICUOLOGY
	2018-02-01
卷号	36 页码:127-138
关键词	Silo Flow Pattern Discharge Rate Discrete-element Model Frictional Viscosity Model
ISSN号	1674-2001
DOI	10.1016/j.partic.2017.04.001
文献子类	Article
英文摘要	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.
WOS关键词	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
语种	英语
WOS记录号	WOS:000423653400012
资助机构	National Natural Science Foundation of China(21576265) ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/23979]
专题	过程工程研究所_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
推荐引用方式 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.