Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system
文献类型：期刊论文
| 作者 | Mao, ZS; Chen, JY |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 59期号:8-9页码:1815-1828 |
| 关键词 | Marangoni effect spherical drop mass transfer numerical simulation solvent extraction instability |
| ISSN号 | 0009-2509 |
| 其他题名 | Chem. Eng. Sci. |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | INTERMEDIATE REYNOLDS-NUMBERS ; VISCOUS-FLOW ; MOTION ; SURFACTANTS ; MICROGRAVITY ; CONVECTION ; MODEL |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000221628600018 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4977]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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