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Effect of capillary ratio on thermal-solutal capillary-buoyancy convection in a shallow annular pool with radial temperature and concentration gradients
Chen, Jie-Chao1,2; Wu, Chun-Mei1; Li, You-Rong1; Yu, Jia-Jia1
2017-06-01
发表期刊INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷号109页码:367-377
摘要In order to understand the effect of capillary ratio on the thermal-solutal capillary-buoyancy convection in an annular pool subjected to simultaneous radial thermal and solutal gradients, a series of three-dimensional direct numerical simulations have been carried out. The working fluid was the toluene/n-hexane mixture fluid with the Prandtl number of 5.54 and the Schmidt number of 142.8. The capillary ratio R-sigma varied from -0.8 to 0.2. Results show that the flow is axisymmetric and steady at small thermocapillary Reynolds number. Four types of such two-dimensional steady flow, i.e., counter-clockwise unicellular flow, clockwise unicellular flow, flows with two separate cells stratified horizontally and vertically, appear with the variations of capillary ratio and thermocapillary Reynolds number. With the further increase of thermocapillary Reynolds number, two-dimensional steady flow bifurcates firstly to three-dimensional steady flow at the first critical thermocapillary Reynolds number, then to three-dimensional oscillatory flow at the second critical thermocapillary Reynolds number. When the threedimensional oscillatory flow appears, the temperature and concentration fluctuations on the free surface are indicated as either the coexistence of "hydro-thermal wave" and "hydro-solutal wave", or the "vibrating straight spokes". A reverse transition from periodic flow to steady flow is encountered. (C) 2017 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Numerical Simulation Flow Pattern Thermal-solutal Capillary Convection Capillary Ratio Annular Pool
WOS标题词Science & Technology ; Physical Sciences ; Technology
资助者National Natural Science Foundation of China(51406019) ; Chongqing University Postgraduates' Innovation Project(CYB15015) ; National Natural Science Foundation of China(51406019) ; Chongqing University Postgraduates' Innovation Project(CYB15015)
DOI10.1016/j.ijheatmasstransfer.2017.02.008
研究领域[WOS]Thermodynamics ; Engineering ; Mechanics
关键词[WOS]MARANGONI CONVECTION ; SURFACE-TENSION ; INTERFACE SHAPE ; GROWTH ; LAYER ; FLOW ; MELT ; DRIVEN ; FLUID
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(51406019) ; Chongqing University Postgraduates' Innovation Project(CYB15015) ; National Natural Science Foundation of China(51406019) ; Chongqing University Postgraduates' Innovation Project(CYB15015)
WOS类目Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000400227300033
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/14170
专题中国科学院广州能源研究所
作者单位1.Chongqing Univ, Coll Power Engn, Minist Educ, Key Lab Low Grade Energy Utilizat Technol & Syst, Chongqing 400044, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
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Chen, Jie-Chao,Wu, Chun-Mei,Li, You-Rong,et al. Effect of capillary ratio on thermal-solutal capillary-buoyancy convection in a shallow annular pool with radial temperature and concentration gradients[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2017,109:367-377.
APA Chen, Jie-Chao,Wu, Chun-Mei,Li, You-Rong,&Yu, Jia-Jia.(2017).Effect of capillary ratio on thermal-solutal capillary-buoyancy convection in a shallow annular pool with radial temperature and concentration gradients.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,109,367-377.
MLA Chen, Jie-Chao,et al."Effect of capillary ratio on thermal-solutal capillary-buoyancy convection in a shallow annular pool with radial temperature and concentration gradients".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 109(2017):367-377.
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