Evaporative and convective instability in the two-layer Marangoni-Bënard system of vapor-liquid

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	Evaporative and convective instability in the two-layer Marangoni-Bënard system of vapor-liquid
	Liu QS(刘秋生); Liu R(刘荣); Zhu ZQ(朱志强); Yan JP; Chen SL
会议录名称	AIAA 57th International Astronautical Congress, IAC 2006
	2006
会议名称	AIAA 57th International Astronautical Congress, IAC 2006
会议日期	October 2, 2006 - October 6, 2006
会议地点	Valencia, Spain
摘要	The effects of liquid evaporation on the interfacial tension-induced convection and instability are studied theoretically and experimentally in present paper. The main purpose of this investigation is to understand the mechanism of convection instability in a thin vapor-liquid layer with a mass exchange surface (interface) where exists the coupling of evaporation phenomenon and Marangoni-Be´nard instability. A systematic model of two-layer system consisting of the evaporating liquid layer and vapor-phase layer, heated from below, is studied by linear instability analysis. The thickness of both layers is finite and each layer has an infinite extension in length. The top wall is assumed as a porous medium pervious to vapor, through which the gas phase is passed in a certain velocity in order to control the evaporation flux and vapor pressure. Deformable vapor-liquid interface in the perturbation state are considered, and the influence on the convection instability of the system are analyzed comparatively. Neutral stability curves of the two-layer system are presented for different cases, such as evaporation coefficient, evaporating mass flux, gravity, etc.
关键词	Evaporation Phenomenon Exchange Surfaces Linear Instability Analysis Vapor-liquid Layers
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/60297
专题	力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Liu QS,Liu R,Zhu ZQ,et al. Evaporative and convective instability in the two-layer Marangoni-Bënard system of vapor-liquid[C]AIAA 57th International Astronautical Congress, IAC 2006,2006.

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