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Title:
Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids
Author: Xun B(寻波); Li K(李凯); Hu WR(胡文瑞)
Source: Physical Review E
Issued Date: 2010
Volume: 81, Issue:3, Pages:36324
Abstract: 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.
Language: 英语
Indexed Type: SCI
Corresponding Author: Hu WR
Correspondent Email: wrhu@imech.ac.cn
DOI: 10.1103/PhysRevE.81.036324
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Physics, Fluids & Plasmas ; Physics, Mathematical
WOS Subject Extended: Physics
WOS Keyword Plus: CONVECTION ; INSTABILITY ; STABILITY ; LAYERS
WOS ID: WOS:000276199400071
ISSN: 1539-3755
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/43671
Appears in Collections:国家微重力实验室_期刊论文

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Recommended Citation:
Xun B,Li K,Hu WR. Effect of volume ratio on thermocapillary flow in liquid bridges of high-Prandtl-number fluids[J]. Physical Review E,2010-01-01,81(3):36324.
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