Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids

	Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids
	Xun B(寻波); Li K(李凯); Hu WR(胡文瑞); Hu WR
刊名	Physical Review E
	2010
通讯作者邮箱	wrhu@imech.ac.cn
卷号	81 期号:3 页码:36324
ISSN号	1539-3755
通讯作者	Hu WR
中文摘要	In present study, the transition of thermocapillary convection from the axisymmetric stationary flow to oscillatory flow in liquid bridges of 5cst silicon oil (aspect ratio 1.0 and 1.6) is investigated in microgravity conditions by the linear instability analysis. The corresponding marginal instability boundary is closely related to the gas/liquid configuration of the liquid bridge noted as volume ratio. With the increasing volume ratio, the marginal instability boundary consists of the increasing branch and the decreasing branch. A gap region exists between the branches where the critical Marangoni number of the corresponding axisymmetric stationary flow increases drastically. Particularly, a unique axisymmetric oscillatory flow (the critical azimuthal wave number is m=0) in the gap region is reported for the liquid bridge of aspect ratio 1.6. Moreover, the energy transfer between the basic state and the disturbance fields of the thermocapillary convection is analyzed at the corresponding critical Marangoni number, which reveals different major sources of the energy transfer for the development of the disturbances in regimes of the increasing branch, the gap region and the decreasing branch, respectively.
类目[WOS]	Physics, Fluids & Plasmas ; Physics, Mathematical
研究领域[WOS]	Physics
关键词[WOS]	CONVECTION ; INSTABILITY ; STABILITY ; LAYERS
收录类别	SCI
资助信息	Chinese Academy of Sciences [KJCX2-YW-L08]; National Natural Science Foundation of China [10872202]
原文出处	http://pre.aps.org/abstract/PRE/v81/i3/e036324
语种	英语
WOS记录号	WOS:000276199400071
公开日期	2011-03-01 ; 2011-03-30
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/43671]
专题	力学研究所_国家微重力实验室
通讯作者	Hu WR
推荐引用方式 GB/T 7714	Xun B,Li K,Hu WR,et al. Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids[J]. Physical Review E,2010,81(3):36324.
APA	寻波,李凯,胡文瑞,&Hu WR.(2010).Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids.Physical Review E,81(3),36324.
MLA	寻波,et al."Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids".Physical Review E 81.3(2010):36324.