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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
发表期刊CHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
卷号158期号:FEB页码:108-116
摘要

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.

关键词Cfd Modelling Bubble Columns Dbs Drag Model Gas Distributor New Inlet Model Large-scale
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.ces.2016.10.005
收录类别SCI
语种英语
关键词[WOS]GAS-LIQUID FLOW ; NUMERICAL-SIMULATION ; LIFT FORCE ; STABILITY CONDITION ; DYNAMIC SIMULATION ; ELEVATED PRESSURES ; TURBULENCE MODELS ; FLUID-DYNAMICS ; SPARGER DESIGN ; MASS-TRANSFER
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National 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记录号WOS:000389068900011
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21845
专题多相复杂系统国家重点实验室
作者单位1.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
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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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