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Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system
Alternative TitleChem. Eng. Sci.
Mao, ZS; Chen, JY
2004-04-01
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume59Issue:8-9Pages:1815-1828
AbstractThe Marangoni effect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid-liquid systems. Such an effect, originating front the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-fitted coordinate system by solving coupled fluid flow and solute mass transfer equations. Numerical simulation demonstrates the occurrence of the Marangoni effect under typical conditions in liquid-liquid systems, and is in reasonable agreement with the classic theoretical analysis. Sufficient spatial and temporal resolution in simulation reveals the multi-scale interaction of the drop-scale Marangoni effect with the sub-drop-scale local interfacial convection. The effect of solute transfer direction, Peclet number, surface tension sensitivity to solute concentration, and level of random perturbation on surface concentration are investigated numerically. It is shown that the Marangoni effect occurs in the middle stage of a transient interphase mass transfer process, and the Marangoni convection at the interface does not necessarily results in the Marangoni effect of mass transfer enhancement. Besides, the Marangoni effect occurs only when the surface tension sensitivity to the solute concentration variation is above certain critical level. The present axisymmetric simulation of the Marangoni effect provides necessary basis for further work on three-dimensional numerical analysis. (C) 2004 Elsevier Ltd. All rights reserved.; The Marangoni effect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid-liquid systems. Such an effect, originating front the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-fitted coordinate system by solving coupled fluid flow and solute mass transfer equations. Numerical simulation demonstrates the occurrence of the Marangoni effect under typical conditions in liquid-liquid systems, and is in reasonable agreement with the classic theoretical analysis. Sufficient spatial and temporal resolution in simulation reveals the multi-scale interaction of the drop-scale Marangoni effect with the sub-drop-scale local interfacial convection. The effect of solute transfer direction, Peclet number, surface tension sensitivity to solute concentration, and level of random perturbation on surface concentration are investigated numerically. It is shown that the Marangoni effect occurs in the middle stage of a transient interphase mass transfer process, and the Marangoni convection at the interface does not necessarily results in the Marangoni effect of mass transfer enhancement. Besides, the Marangoni effect occurs only when the surface tension sensitivity to the solute concentration variation is above certain critical level. The present axisymmetric simulation of the Marangoni effect provides necessary basis for further work on three-dimensional numerical analysis. (C) 2004 Elsevier Ltd. All rights reserved.
KeywordMarangoni Effect Spherical Drop Mass Transfer Numerical Simulation Solvent Extraction Instability
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2004.01.035
URL查看原文
Indexed BySCI
Language英语
WOS KeywordINTERMEDIATE REYNOLDS-NUMBERS ; VISCOUS-FLOW ; MOTION ; SURFACTANTS ; MICROGRAVITY ; CONVECTION ; MODEL
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000221628600018
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/4977
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Mao, ZS,Chen, JY. Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system[J]. CHEMICAL ENGINEERING SCIENCE,2004,59(8-9):1815-1828.
APA Mao, ZS,&Chen, JY.(2004).Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system.CHEMICAL ENGINEERING SCIENCE,59(8-9),1815-1828.
MLA Mao, ZS,et al."Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system".CHEMICAL ENGINEERING SCIENCE 59.8-9(2004):1815-1828.
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