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A kinetic inlet model for CFD simulation of large-scale bubble columns
Shi, Weibin1,2; Yang, Ning1; Yang, Xiaogang2
2017-02-02
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume158Issue:FEBPages:108-116
Abstract

For the simulation of industrial-scale bubble column reactors, while modelling the gas distributor as uniform inlets oversimplifies the inhomogeneity introduced by inlets, the direct simulation of the full geometry of gas distributor or sparger brings about enormous pre-processing work and huge computational cost. A new inlet model is therefore proposed in this paper to simplify the modelling of gas distributor and meanwhile maintain the simulation accuracy. The new inlet model is validated by the comparison of the model prediction with experiments and the CFD simulation incorporating the full geometry of gas distributor for bubble columns of small or large diameters. Comparisons of three different inlet boundary conditions, i.e., the direct simulation of gas distributor, the uniform inlet, and the new inlet model, are made in the simulation of the total gas holdup, the radial profiles of gas holdup at different cross-sections along the column height, and the axial velocity of liquid at various superficial gas velocities. The results indicate that the new inlet model is capable of achieving a good balance between simulation accuracy and computational cost for the CFD simulation of large-scale bubble column reactors.

KeywordCfd Modelling Bubble Columns Dbs Drag Model Gas Distributor New Inlet Model Large-scale
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2016.10.005
Indexed BySCI
Language英语
WOS KeywordGAS-LIQUID FLOW ; NUMERICAL-SIMULATION ; LIFT FORCE ; STABILITY CONDITION ; DYNAMIC SIMULATION ; ELEVATED PRESSURES ; TURBULENCE MODELS ; FLUID-DYNAMICS ; SPARGER DESIGN ; MASS-TRANSFER
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China (NSFC)(91434121 ; Ministry of Science and Technology of China(2013BAC12B01) ; International Doctoral Innovation Centre (IDIC) of University of Nottingham Ningbo China ; EPSRC(EP/G037345/1) ; 91534118)
WOS IDWOS:000389068900011
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21845
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China
2.Univ Nottingham, IDIC, Univ Pk, Ningbo 315100, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Shi, Weibin,Yang, Ning,Yang, Xiaogang. A kinetic inlet model for CFD simulation of large-scale bubble columns[J]. CHEMICAL ENGINEERING SCIENCE,2017,158(FEB):108-116.
APA Shi, Weibin,Yang, Ning,&Yang, Xiaogang.(2017).A kinetic inlet model for CFD simulation of large-scale bubble columns.CHEMICAL ENGINEERING SCIENCE,158(FEB),108-116.
MLA Shi, Weibin,et al."A kinetic inlet model for CFD simulation of large-scale bubble columns".CHEMICAL ENGINEERING SCIENCE 158.FEB(2017):108-116.
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