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Instabilities of thermocapillary-buoyancy convection in open rectangular liquid layers

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Jiang Huan   Duan Li *   Kang Qi *  
文摘 This article presents the experimental investigation on instabilities of thermocapillary-buoyancy convection in the transition process in an open rectangular liquid layer subject to a horizontal temperature gradient. In the experimental run, an infrared thermal imaging system was constructed to observe and record the surface wave of the rectangular liquid layer. It was found that there are distinct convection longitudinal rolls in the flow field in the thermocapillary-buoyancy convection transition process. There are different wave characterizations for liquid layers with different thicknesses. For sufficiently thin layers, oblique hydrothermal waves are observed, which was predicted by the linear-stability analysis of Smith & Davis in 1983. For thicker layers, the surface flow is distinct and intensified, which is because the buoyancy convection plays a dominant role and bulk fluid flow from hot wall to cold wall in the free surface of liquid layers. In addition, the spatiotemporal evolution analysis has been carried out to conclude the rule of the temperature field destabilization in the transition process.
来源 Chinese Physics. B ,2017,26(11):114703-1-114703-8 【核心库】
DOI 10.1088/1674-1056/26/11/114703
关键词 thermocapillary-buoyancy convection ; instability ; open rectangular liquid layer ; spatiotemporal evolution
地址

Institute of Mechanics, Chinese Academy of Sciences, Key Laboratory of Microgravity, Chinese Academy of Sciences, Beijing, 100190

语种 英文
文献类型 研究性论文
ISSN 1674-1056
学科 物理学
基金 Project supported by the Strategic Priority Research Program on Space Science, Chinese Academy of Sciences: SJ-10 Recoverable Scientific Experiment Satellite ;  the China Manned Space Engineering program (TG-2) ;  Cooperative Research Project between China and Russia, and the National Natural Science Foundation of China
文献收藏号 CSCD:6125788

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引证文献 3 篇

1 Wang Yuren Manipulation of Colloidal Droplets in Space and the Instability of Thermocapillary Convection in Large Prandtl Number Liquid Bridge in Microgravity 空间科学学报,2018,38(5):810-813
被引 0 次

2 Xu Guofeng Instability in Two-Sided Thermocapillary-Buoyancy Convection with Interfacial Phase Change Chinese Physics Letters,2020,37(1):014701
被引 0 次

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