IMECH-IR  > 国家微重力实验室
Alternative TitleCritical temperature difference of surface oscillation of buoyantthermocapillary convection in an open cylindrical annuli
张丽; 段俐; 康琦
Source Publication实验流体力学
Other AbstractThermocapillary convection occurs when a radial temperature difference is subjected to an open cylindrical annuli. It is driven by temperature-induced interfacial-tension variation. Combined with the gravity on the ground, the buoyant-thermocapillary convection becomes more complex. When temperature difference ΔT reaches a critical value ΔTc, regular oscillation appears on the open surface, which changes with the layer thickness h. In our experiments, high-precision sensor system is applied to measure the surface displacements. Critical temperature differences of the oscillations are discussed as well as the coupled driven forces in our study. Surface deformation is analyzed by none-dimensional method and the influence of environmental temperature is also concerned. Additionally, approximate layer thickness range is deduced when strong signals happened.
Keyword环形液池 浮力-热毛细对流 表面振荡 临界温差
Subject Area微重力流体力学
Indexed ByCSCD ; EI
Funding Organization国家自然科学基金重点项目(11032011)和面上项目(10972224); 中国科学院方向性项目(KJCX2-YW-L08)
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Document Type期刊论文
Corresponding Author段俐
Recommended Citation
GB/T 7714
张丽,段俐,康琦. 环形液池浮力-热毛细对流表面振荡现象的临界温差[J]. 实验流体力学,2012,26(4):48-53.
APA 张丽,段俐,&康琦.(2012).环形液池浮力-热毛细对流表面振荡现象的临界温差.实验流体力学,26(4),48-53.
MLA 张丽,et al."环形液池浮力-热毛细对流表面振荡现象的临界温差".实验流体力学 26.4(2012):48-53.
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