Instability in Two-Sided Thermocapillary-Buoyancy Convection with Interfacial Phase Change
Guo-Feng Xu1,2 , Qiu-Sheng Liu1,2** , Jun Qin1,2 , Zhi-Qiang Zhu1
1 Institute of Mechanics, Chinese Academy of Sciences, Beijing 1001902 University of Chinese Academy of Sciences, Beijing 100049
Abstract ：A new model of two-phase thermocapillary-buoyancy convection with phase change at gas-liquid interface in an enclosed cavity subjected to a horizontal temperature gradient is proposed, rather than the previous one-sided model without phase change. We study the onset of multicellular convection and two modes of convective instability, and find four different flow regimes. Their transition map is compared with the non-phase-change condition. Our numerical results show the stabilizing effect of interfacial phase change on the thermocapillary-buoyancy convection.
收稿日期: 2019-08-14
出版日期: 2019-12-23
:
47.55.Ca
(Gas/liquid flows)
47.55.dm
(Thermocapillary effects)
47.20.Hw
(Morphological instability; phase changes)
47.55.P-
(Buoyancy-driven flows; convection)
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2020, Vol. 37 
