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Modeling of Cavern Formation in Yield Stress Fluids in Stirred Tanks
Alternative TitleAiche J.
Xiao, Qi1,2; Yang, Ning2; Zhu, Jiahua3; Guo, Liejin1
2014-08-01
Source PublicationAICHE JOURNAL
ISSN0001-1541
Volume60Issue:8Pages:3057-3070
AbstractPrediction of cavern formation in yield stress fluids in stirred tanks is of great importance for optimization. A new torus model is developed and then validated by experimental data and computational fluid dynamics simulation. Unlike existing mathematical models, the new torus model assumes that the circular center of the torus should not be outside the impeller swept region as the Reynolds number (Re) increases. Hence the cavern boundary is shaped like an apple torus rather than a horn torus. The new model also considers the cavern-vessel interactions. At relatively high Re, the new model predicts cavern shape and size better than other models. It correctly captures the cavern outline at various Re, which verified the assumption about torus center. The new model is then used to identify the influence of rheological parameters on cavern formation, and further extended to the cavern prediction of the dual-impeller system. (C) 2014 American Institute of Chemical Engineers; Prediction of cavern formation in yield stress fluids in stirred tanks is of great importance for optimization. A new torus model is developed and then validated by experimental data and computational fluid dynamics simulation. Unlike existing mathematical models, the new torus model assumes that the circular center of the torus should not be outside the impeller swept region as the Reynolds number (Re) increases. Hence the cavern boundary is shaped like an apple torus rather than a horn torus. The new model also considers the cavern-vessel interactions. At relatively high Re, the new model predicts cavern shape and size better than other models. It correctly captures the cavern outline at various Re, which verified the assumption about torus center. The new model is then used to identify the influence of rheological parameters on cavern formation, and further extended to the cavern prediction of the dual-impeller system. (C) 2014 American Institute of Chemical Engineers
KeywordComputational Fluid Dynamics Stirred Tank Yield Stress Cavern
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1002/aic.14470
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTURBULENT-FLOW REGIME ; NON-NEWTONIAN FLUIDS ; PLASTIC FLUID ; SHEAR RATE ; IMPELLERS ; SIZES ; VESSELS ; VISUALIZATION ; PERFORMANCE ; BOUNDARIES
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000339256100031
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/10995
Collection研究所(批量导入)
Affiliation1.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Qi,Yang, Ning,Zhu, Jiahua,et al. Modeling of Cavern Formation in Yield Stress Fluids in Stirred Tanks[J]. AICHE JOURNAL,2014,60(8):3057-3070.
APA Xiao, Qi,Yang, Ning,Zhu, Jiahua,&Guo, Liejin.(2014).Modeling of Cavern Formation in Yield Stress Fluids in Stirred Tanks.AICHE JOURNAL,60(8),3057-3070.
MLA Xiao, Qi,et al."Modeling of Cavern Formation in Yield Stress Fluids in Stirred Tanks".AICHE JOURNAL 60.8(2014):3057-3070.
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