Instability of Two-Layer Rayleigh-Bénard Convection with Interfacial Thermocapillary Effect
LIU Qiu-Sheng1, ZHOU Bing-Hong1,2, NGUYEN THI Henri2, HU Wen-Rui1
1Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080
2L2MP, UMR CNRS 6137, Université d’Aix-Marseille III, 13397 Marseille Cedex 20, France
Instability of Two-Layer Rayleigh-Bénard Convection with Interfacial Thermocapillary Effect
LIU Qiu-Sheng1;ZHOU Bing-Hong1,2;NGUYEN THI Henri2;HU Wen-Rui1
1Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080
2L2MP, UMR CNRS 6137, Université d’Aix-Marseille III, 13397 Marseille Cedex 20, France
Abstract： The linear instability analysis of the Rayleigh-Marangoni-Bénard convection in a two-layer system of silicon oil 10 cS and fluorinert FC70 liquids are performed in a larger range of two-layer depth ratios Hr from 0.2 to 5.0 for different total depth H ≤ 12 mm. Our results are different from the previous study on the Rayleigh-Bénard instability and show strong effects of thermocapillary force at the interface on the time-dependent oscillations arising from the onset of instability convection.
2004, Vol. 21 
