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CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models
Guan, Xiaoping1; Li, Xinju1,2,3; Yang, Ning1; Liu, Mingyan2,3
2020-04-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume386Pages:11
AbstractDrag force plays important roles in the prediction of gas-liquid flow in stirred tanks, but systematic studies on drag models are still lacking. In this study, we evaluated the effect of four different drag models (DBS-Local, DBS-Global, Brucato, Schiller-Naumann) in which the DBS model was originally developed for bubble columns. The flow regime, liquid flow field and gas holdup predicted by the four drag models are compared with experiments. The DBS-Local and DBS-Global models show the advantages over the other two in the prediction of gas dispersion and flow structure, since the ratio of effective drag coefficient to bubble diameter is either one or twoorders of magnitude over-estimated by the Brucato model or under-predicted by the Schiller-Naumann model. The flow regime at different rotational speeds and the effects of gas dispersion on the liquid loop structure can be correctly predicted by the DBS drag models. This study demonstrates that the drag model is extremely important to accurately predict the gas-liquid flow in stirred tanks.
KeywordComputational fluid dynamics Gas-liquid Stirred tank Drag model Mesoscale
DOI10.1016/j.cej.2019.04.134
Language英语
WOS KeywordFLUID-DYNAMICS SIMULATION ; BUBBLE-SIZE ; STABILITY CONDITION ; REGIME TRANSITION ; TURBULENCE MODELS ; RUSHTON TURBINE ; HOLDUP ; HYDRODYNAMICS ; DISPERSION ; VESSEL
Funding ProjectNational Key R&D Program of China[2017YFB0602500] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[91634203] ; National Natural Science Foundation of China[21808222] ; Beijing Natural Science Foundation[2184125] ; Strategic Priority Research Program, Chinese Academy of Sciences[XDA21030700]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Strategic Priority Research Program, Chinese Academy of Sciences
WOS IDWOS:000551293900003
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41482
Collection中国科学院过程工程研究所
Corresponding AuthorYang, Ning
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
3.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Guan, Xiaoping,Li, Xinju,Yang, Ning,et al. CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models[J]. CHEMICAL ENGINEERING JOURNAL,2020,386:11.
APA Guan, Xiaoping,Li, Xinju,Yang, Ning,&Liu, Mingyan.(2020).CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models.CHEMICAL ENGINEERING JOURNAL,386,11.
MLA Guan, Xiaoping,et al."CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models".CHEMICAL ENGINEERING JOURNAL 386(2020):11.
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