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On the stability of thermocapillary convection of a Bingham fluid in an infinite liquid layer
Hu KX(胡开鑫); He M; Chen QS(陈启生); Liu R(刘荣)
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
2018-07-01
Volume122Pages:993-1002
ISSN0017-9310
Abstract

The linear stability of thermocapillary liquid layer of a Bingham-plastic fluid is studied. Due to the yield stress of Bingham fluid, there is a plug region in the flow, which divides the yielded flow into two regions. When the flow is subjected to a small perturbation, the velocity perturbation below the upper surface of plug region is negligible, while the temperature perturbation can be found in all flow regions at moderate and small Prandtl numbers (Pr). The perturbation amplitude of the upper surface of plug region decreases rapidly with the increase of Pr. The preferred modes are the upstream oblique wave and the downstream streamwise wave at small and large Pr, respectively. The effects of the yield stress, gravity and the interfacial heat transfer on the flow stability are discussed. The perturbation amplitude only appears above the plug region, which differs from the cases in the plane Bingham-Poiseuille flow and the thermocapillary liquid layer of a Carreau fluid. (C) 2018 Elsevier Ltd. All rights reserved.

DOI10.1016/j.ijheatmasstransfer.2018.02.048
Indexed BySCI ; EI
Language英语
WOS IDWOS:000431933500085
WOS KeywordPOISEUILLE FLOW ; LINEAR-STABILITY ; SURFACE-TENSION ; INSTABILITIES ; GRAVITY ; MODEL ; FILM
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
Funding OrganizationNational Natural Science Foundation of China(11402271 ; K.C. Wong Magna Fund in Ningbo University ; 11532015 ; U1738119)
Classification一类
Ranking3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77465
Collection国家微重力实验室
Recommended Citation
GB/T 7714
Hu KX,He M,Chen QS,et al. On the stability of thermocapillary convection of a Bingham fluid in an infinite liquid layer[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2018,122:993-1002.
APA Hu KX,He M,Chen QS,&Liu R.(2018).On the stability of thermocapillary convection of a Bingham fluid in an infinite liquid layer.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,122,993-1002.
MLA Hu KX,et al."On the stability of thermocapillary convection of a Bingham fluid in an infinite liquid layer".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 122(2018):993-1002.
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