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Eulerian simulation of a circulating fluidized bed with a new flow structure-based drag model
Hou, Baolin1; Wang, Xiaodong1; Zhang, Tao1; Li, Hongzhong2
2016-01-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume284Issue:JANPages:1224-1232
AbstractThe heterogeneous flow in a circulating fluidized bed (CFB) deteriorates momentum, combined with its heat and mass transfer between gas and solid, have been confirmed by several experiments. Due to no consideration of this heterogeneous flow in Euler-Eluer two phase flow model, there are the significant deviation of average voidage between the simulating results and experimental data. Therefore, we developed a new model to evaluate the local heterogeneous flow parameters, based on which gas solid drag force coefficient in calculating mesh was calculated. This drag coefficient based on these local heterogeneous flow structure parameters improves the Euler-Eluer two phase flow model greatly, which further is confirmed by better description of average voidage in experiments. With this drag force coefficient model, the nature of axial S-shape and radial core-annular distribution of solid concentration in CFB can be captured. (c) 2015 Elsevier B.V. All rights reserved.
KeywordCirculating Fluidized Bed Euler-euler Two Flow Model Multi-scale Cluster
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2015.09.073
Indexed BySCI
Language英语
WOS KeywordSOLID RISER FLOWS ; MASS-TRANSFER MODEL ; CFD SIMULATION ; HIGH-DENSITY ; SUBGRID MODEL ; MULTISCALE ; PARTICLES ; DYNAMICS ; VALIDATION ; COMBUSTION
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationState Key Development Program for Basic Research of China (973 Program)(2015CB251402) ; National Natural Science Foundation of China(21206159)
WOS IDWOS:000365052600129
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19868
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Hou, Baolin,Wang, Xiaodong,Zhang, Tao,et al. Eulerian simulation of a circulating fluidized bed with a new flow structure-based drag model[J]. CHEMICAL ENGINEERING JOURNAL,2016,284(JAN):1224-1232.
APA Hou, Baolin,Wang, Xiaodong,Zhang, Tao,&Li, Hongzhong.(2016).Eulerian simulation of a circulating fluidized bed with a new flow structure-based drag model.CHEMICAL ENGINEERING JOURNAL,284(JAN),1224-1232.
MLA Hou, Baolin,et al."Eulerian simulation of a circulating fluidized bed with a new flow structure-based drag model".CHEMICAL ENGINEERING JOURNAL 284.JAN(2016):1224-1232.
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