|Ground experiment on the instability of buoyant-thermocapillary convection in large-scale liquid bridge with large Prandtl number|
|Wang J(王佳); Wu D(吴迪); Duan L(段俐); Kang Q(康琦); Kang, Q (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Chinese Acad Sci, Natl Micrograv Lab,Inst Mech, Beijing 100190, Peoples R China.
|Source Publication||INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
|Abstract||In order to cooperate with the Chinese TG-2 space experiment project, this paper studies the flow structure and critical conditions at the onset of transition and nonlinear regimes of bouyant-thermocapillary convection in large-scale liquid bridge with large Prandtl number under normal gravity. The surface temperature distribution is obtained by means of thermal infrared camera, to study the temperature oscillation, temporal-spatial analysis and modal structures of the temperature field. In addition, the fluid velocity field is measured by Particle Image Velocimetry, to study the internal flow field structure and flow characteristics in the transition process of the liquid bridge. It is found that the critical value of the buoyant-thermocapillary convection in the half-zone liquid bridge can be affected by geometric parameters. Under large Prandtl number conditions, the critical temperature difference will change non linearly with the volume ratio, and the convection will transit from steady flow to a sequence of instabilities. In addition, various wave patterns will appear with increasing Marangoni number, and with further increased temperature difference a chaos state will emerge. (C) 2017 Elsevier Ltd. All rights reserved.|
|Keyword||Large-scale Liquid Bridge
|WOS Keyword||FLOATING HALF ZONE
; MARANGONI CONVECTION
; ASPECT RATIOS
; MOLTEN TIN
|WOS Research Area||Thermodynamics
; Engineering, Mechanical
|Funding Organization||China Manned Space Engineering program [TG-2]
; National Natural Science Foundation of China 
; Strategic Priority Research Program on Space Science
; Chinese Academy of Sciences: SJ-10 Recoverable Scientific Experiment Satellite [XDA04020405, XDA04020202-05]
|Corresponding Author||Kang, Q (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Chinese Acad Sci, Natl Micrograv Lab,Inst Mech, Beijing 100190, Peoples R China.|
Wang J,Wu D,Duan L,et al. Ground experiment on the instability of buoyant-thermocapillary convection in large-scale liquid bridge with large Prandtl number[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2017,108:2107-2119.
王佳,吴迪,段俐,康琦,&Kang, Q .(2017).Ground experiment on the instability of buoyant-thermocapillary convection in large-scale liquid bridge with large Prandtl number.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,108,2107-2119.
王佳,et al."Ground experiment on the instability of buoyant-thermocapillary convection in large-scale liquid bridge with large Prandtl number".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 108(2017):2107-2119.
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