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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
Source PublicationPhysical Review E
2010
Volume81Issue:3Pages:36324
ISSN1539-3755
AbstractIn 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.
DOI10.1103/PhysRevE.81.036324
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Indexed BySCI
Language英语
WOS IDWOS:000276199400071
WOS KeywordCONVECTION ; INSTABILITY ; STABILITY ; LAYERS
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas ; Physics, Mathematical
Funding OrganizationChinese Academy of Sciences [KJCX2-YW-L08] ; National Natural Science Foundation of China [10872202]
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43671
Collection国家微重力实验室
Corresponding AuthorHu WR
Recommended Citation
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.
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