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Title:
Instability of the interface in two-layer flows with large viscosity contrast at small Reynolds numbers
Author: Liu JB; Zhou JF(周济福)
Source: ACTA MECHANICA SINICA
Issued Date: 2016
Volume: 32, Issue:6, Pages:1031-1043
Abstract: The Kelvin-Helmholtz instability is believed to be the dominant instability mechanism for free shear flows at large Reynolds numbers. At small Reynolds numbers, a new instability mode is identified when the temporal instability of parallel viscous two fluid mixing layers is extended to current-fluid mud systems by considering a composite error function velocity profile. The new mode is caused by the large viscosity difference between the two fluids. This interfacial mode exists when the fluid mud boundary layer is sufficiently thin. Its performance is different from that of the Kelvin-Helmholtz mode. This mode has not yet been reported for interface instability problems with large viscosity contrasts. These results are essential for further stability analysis of flows relevant to the breaking up of this type of interface.
Keyword: Mud ; Interface instability ; Kelvin-Helmholtz instability ; Interfacial modes
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Zhou, JF (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. ; Zhou, JF (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
Correspondent Email: Zhoujf@imech.ac.cn
DOI: 10.1007/s10409-016-0599-6
Related URLs: 查看原文
DOC Type: 期刊论文
WOS Subject: Engineering, Mechanical ; Mechanics
WOS Subject Extended: Engineering ; Mechanics
WOS Keyword Plus: Mud ; Interface instability ; Kelvin-Helmholtz instability ; Interfacial modes
WOS ID: WOS:000389199200007
ISSN: 0567-7718
Funder: National Natural Science Foundation of China [11172307, 11232012, 11572332] ; 973 Program [2014CB046200] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040203]
Rank: [Liu, Jiebin; Zhou, Jifu] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; [Liu, Jiebin; Zhou, Jifu] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Department: LMFS水环境流体力学(LEM)
Classification: 二类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/59938
Appears in Collections:非线性力学国家重点实验室_期刊论文

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Recommended Citation:
Liu JB,Zhou JF. Instability of the interface in two-layer flows with large viscosity contrast at small Reynolds numbers[J]. ACTA MECHANICA SINICA,2016-01-01,32(6):1031-1043.
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