CAS OpenIR
CFD simulation of the effects of a suspension section on the hydrodynamics of a circulating fluidized bed
Liu, Cenfan1,2; Zhang, Nan1; Wang, Wei1,3
2019-04-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume43Pages:1-8
AbstractGas-solid two-phase flow in a circulating fluidized bed (CFB) is affected by operating conditions (e.g., superficial gas velocity, solids inventory), material properties and geometric factors, such as the entry and exit configuration. In particular, the suspension section, which is located between the riser bottom and the solids recycle inlet, affects the hydrodynamics in the riser significantly. However, the suspension section has received less attention compared with other geometric factors. Most computational fluid dynamics (CFD) simulations, especially two-dimensional simulations do not take this factor into account. We performed three-dimensional, full-loop CFD simulations with a drag coefficient that was determined by the energy-minimization multi-scale model, and investigated the flow behavior of two CFBs with different suspension-section lengths. The simulation results revealed that the axial profiles of voidage in the riser with a longer suspension section are more likely S-shaped, whereas those with shorter suspension sections decay exponentially. The dependences of solids flux on solids inventory differ in the two CFBs. A shorter suspension section may result in a smooth transition from dilute to dense transport without intermediate accumulative choking, whereas a longer suspension section may lead to a choking transition. These simulation results are qualitatively consistent with the flow behaviors described in literature. (C) 2018 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordComputational fluid dynamics Fluidization Meso-scale Energy-minimization multi-scale Suspension section
DOI10.1016/j.partic.2018.04.004
Language英语
WOS KeywordSOLID RISER FLOWS ; NUMERICAL-SIMULATION ; EXIT GEOMETRY ; PART II ; MODEL ; LOOP ; OPERATION ; PATTERNS ; CHOKING ; DENSITY
Funding ProjectNational Natural Science Foundation of China[21625605] ; National Natural Science Foundation of China[21821005] ; Science and Technology project of AQSIQ[2016QK196]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; Science and Technology project of AQSIQ
WOS IDWOS:000460715600001
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28269
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Wei
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.China Special Equipment Inspect & Res Inst, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Cenfan,Zhang, Nan,Wang, Wei. CFD simulation of the effects of a suspension section on the hydrodynamics of a circulating fluidized bed[J]. PARTICUOLOGY,2019,43:1-8.
APA Liu, Cenfan,Zhang, Nan,&Wang, Wei.(2019).CFD simulation of the effects of a suspension section on the hydrodynamics of a circulating fluidized bed.PARTICUOLOGY,43,1-8.
MLA Liu, Cenfan,et al."CFD simulation of the effects of a suspension section on the hydrodynamics of a circulating fluidized bed".PARTICUOLOGY 43(2019):1-8.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Cenfan]'s Articles
[Zhang, Nan]'s Articles
[Wang, Wei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Cenfan]'s Articles
[Zhang, Nan]'s Articles
[Wang, Wei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Cenfan]'s Articles
[Zhang, Nan]'s Articles
[Wang, Wei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.