CAS OpenIR  > 多相复杂系统国家重点实验室
Flow structures inside a large-scale turbulent fluidized bed of FCC particles: Eulerian simulation with an EMMS-based sub-grid scale model
Wang, Junwu; Wang, JW
2010-04-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume8Issue:2Pages:176-185
AbstractTurbulent fluidized bed reactors are widely used in industry. However, CFD simulations of the hydrodynamic characteristics of these reactors are relatively sparse, despite the urgent demand from industry. To address this problem, Eulerian simulations with an EMMS-based sub-grid scale model, accounting for the effect of sub-grid scale structures on the inter-phase friction, are performed to study the hydrodynamics inside a large-scale turbulent fluidized bed of FCC particles. It is shown that the simulated axial and radial solid concentration profiles, entrained solid fluxes and standard deviation of the solid concentration fluctuation agreed well with experimental data available in the literature. In-depth analysis of time-averaged particle velocity and solid concentration shows that a dense-suspension upflow regime coexists with fast fluidization regime in this bed, which is reminiscent of the hydrodynamic characteristics in high-density circulating fluidized bed (CFB) risers, even though they are operated in different fluidization regimes. The Reynolds stresses in turbulent fluidized beds are anisotropic, but the degree of anisotropy is far less pronounced than the reported values in CFB risers. It was also found that the solid concentration fluctuation and axial particle velocity fluctuation are strongly correlated. (C) 2009 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordFluidization Eulerian Simulation Emms Model Sub-grid Scale Model
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2009.03.013
Indexed BySCI
Language英语
WOS KeywordGAS-SOLID FLOWS ; CFD SIMULATION ; KINETIC-THEORY ; RISER ; FLUCTUATIONS ; TEMPERATURE ; SUSPENSIONS ; REGIMES ; SYSTEMS
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
WOS IDWOS:000276581200010
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6176
Collection多相复杂系统国家重点实验室
Corresponding AuthorWang, JW
AffiliationChinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Junwu,Wang, JW. Flow structures inside a large-scale turbulent fluidized bed of FCC particles: Eulerian simulation with an EMMS-based sub-grid scale model[J]. PARTICUOLOGY,2010,8(2):176-185.
APA Wang, Junwu,&Wang, JW.(2010).Flow structures inside a large-scale turbulent fluidized bed of FCC particles: Eulerian simulation with an EMMS-based sub-grid scale model.PARTICUOLOGY,8(2),176-185.
MLA Wang, Junwu,et al."Flow structures inside a large-scale turbulent fluidized bed of FCC particles: Eulerian simulation with an EMMS-based sub-grid scale model".PARTICUOLOGY 8.2(2010):176-185.
Files in This Item:
File Name/Size DocType Version Access License
20131119-1282-复件 1-s(1575KB) 限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Junwu]'s Articles
[Wang, JW]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Junwu]'s Articles
[Wang, JW]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Junwu]'s Articles
[Wang, JW]'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.