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The rise and deformation of a single bubble in ionic liquids
Dong, Haifeng1,2; Wang, Xiaoling1,3; Liu, Lu1; Zhang, Xiangping1; Zhang, Suojiang1; Zhang, XP
2010-05-15
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume65Issue:10Pages:3240-3248
AbstractIonic liquids constitute a new class of substances that are considered as potential substitutes for many traditional organic solvents in reaction and separation systems. But there is still a lack of transfer data due to the deficiency of research on the flow behavior. In this work, the motion and deformation of single bubbles rising in quiescent ionic liquids were investigated by injecting bubbles into three different ionic liquids ([bmim]BF(4), [omim]BF(4) and [bmim]PF(6)) through orifices with different inner diameters at various temperatures. Bubble size, aspect ratio and velocity were measured by processing images taken by high-speed camera, operated at 1000 frames per second with a resolution of 1280 x 512 pixels. The measured drag coefficient and aspect ratio were compared with correlations available in literature. The comparison showed that these correlations do not give fully satisfactory results in predicting the drag coefficient and aspect ratio of bubbles rising in ionic liquids, showing a big relative error. As a result, two new empirical correlations were proposed to correlate the drag coefficient as a function of Reynolds number and the aspect ratio as a function of a new dimensionless parameter IL which could group experimental data for gas bubble in ionic liquids. It was found that the values predicted by new empirical correlations are generally in good agreement with the experiment results. (C) 2010 Elsevier Ltd. All rights reserved.
KeywordBubble Drag Coefficient Aspect Ratio Correlation Ionic Liquids Multiphase Flow
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2010.02.011
Indexed BySCI
Language英语
WOS KeywordSURFACE-TENSION MEASUREMENTS ; VISCOUS-LIQUIDS ; THERMODYNAMIC PROPERTIES ; DRAG COEFFICIENT ; RISING VELOCITY ; REYNOLDS-NUMBER ; MOLTEN-SALTS ; GAS-BUBBLES ; TEMPERATURE ; SOLVENTS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000278104100036
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6150
Collection多相复杂系统国家重点实验室
Corresponding AuthorZhang, XP
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Zhengzhou Univ, Dept Math, Zhengzhou 450052, Peoples R China
Recommended Citation
GB/T 7714
Dong, Haifeng,Wang, Xiaoling,Liu, Lu,et al. The rise and deformation of a single bubble in ionic liquids[J]. CHEMICAL ENGINEERING SCIENCE,2010,65(10):3240-3248.
APA Dong, Haifeng,Wang, Xiaoling,Liu, Lu,Zhang, Xiangping,Zhang, Suojiang,&Zhang, XP.(2010).The rise and deformation of a single bubble in ionic liquids.CHEMICAL ENGINEERING SCIENCE,65(10),3240-3248.
MLA Dong, Haifeng,et al."The rise and deformation of a single bubble in ionic liquids".CHEMICAL ENGINEERING SCIENCE 65.10(2010):3240-3248.
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