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A structure-based drag model for the simulation of Geldart A and B particles in turbulent fluidized beds
Chen, Jie1,2; Li, Hongzhong1; Lv, Xiaolin1,2; Zhu, Qingshan1
2015-04-01
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume274Issue:APRPages:112-122
Abstract

To simulate the hydrodynamics of turbulent fluidized beds (TFBs), the flow structure of the TFBs was divided into quasi discrete cluster and void phases. Then, nine local structural parameters were used to describe the internal flow structure of TFBs and these structural parameters were obtained by solving momentum conservation equation, mass conservation equation and pressure balance equation. The structure-based drag model was incorporated into the two-fluid model to simulate the gas-solid flow behavior in the TFBs, considering the effect of the non-uniform flow structure. Considering different particle types and bed diameters, four cases were set to demonstrate the effectiveness and adaptability of this model. The reasonable agreement between the simulation results and the experiment data showed that the method adopted in this work could effectively predict the gas-solid flow behavior in TFBs with Geldart A and B particles. Besides, the non-uniform structures in both radial and axial directions were successfully simulated. Meanwhile, there is no obvious difference between Geldart A and B particles. The solid concentration difference between the wall and the center region decreases with the increase of the bed diameters. (C) 2015 Elsevier B.V. All rights reserved.

KeywordTurbulent Fluidization Simulation Drag Model Local Structure Geldart a And b Particles
SubtypeArticle
Subject AreaEngineering
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.powtec.2015.01.010
Indexed BySCI
Language英语
WOS KeywordGas-solid Flow ; Fcc Particles ; Cfd Simulation ; Systems ; Hydrodynamics ; Validation
Funding ProjectNational Natural Science Foundation of China [21325628] ; State Key Development Program for Basic Research of China (973 Program) [2015CB251402]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000351973200015
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13792
Collection研究所(批量导入)
Corresponding AuthorLi, Hongzhong
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
Recommended Citation
GB/T 7714
Chen, Jie,Li, Hongzhong,Lv, Xiaolin,et al. A structure-based drag model for the simulation of Geldart A and B particles in turbulent fluidized beds[J]. POWDER TECHNOLOGY,2015,274(APR):112-122.
APA Chen, Jie,Li, Hongzhong,Lv, Xiaolin,&Zhu, Qingshan.(2015).A structure-based drag model for the simulation of Geldart A and B particles in turbulent fluidized beds.POWDER TECHNOLOGY,274(APR),112-122.
MLA Chen, Jie,et al."A structure-based drag model for the simulation of Geldart A and B particles in turbulent fluidized beds".POWDER TECHNOLOGY 274.APR(2015):112-122.
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