IMECH-IR  > 流固耦合系统力学重点实验室
Stability of mud-water interface under long surface waves
Liu JB(刘杰斌); Zhou JF(周济福)
Source PublicationAIP ADVANCES
2019-02-01
Volume9Issue:2Pages:AR025009
ISSN2158-3226
AbstractFluid mud often exists in coastal areas with an interface separating it from its upper water layer. When a surface wave propagates over a bed covered with water and fluid mud, it will cause an interfacial wave of the mud-water interface, which damps the surface wave and results in mass transport of fluid mud. Most researches about wave attenuation and mass transport of fluid mud are based on the assumption that the mud-water interface is unbroken. This assumption excludes the breaking interfacial waves that are known as an important mechanism responsible for mass and momentum transport between the two fluids. When the surface wave is long, its velocity field, which also serves as basic flows, may be susceptible to the Kelvin-Helmholtz (K-H) instability if the shears at the interface are strong enough. In the present paper, the critical conditions for the K-H instability to occur for the mud-water interface is investigated via linear stability analysis and numerical simulation. It is found that, for a K-H instability to occur, the Stokes boundary layer thickness induced by a surface wave must be large enough to penetrate the fluid mud layer and produce a strong shear at the interface. Meanwhile, a critical condition is found for a long surface wave to cause breakup of mud-water interface through K-H instability. This is practically instructive for waterway and harbor construction and protection because it predicts that a thicker mud layer is harder to be taken away by a surface wave. (C) 2019 Author(s).
DOI10.1063/1.5083948
Indexed BySCI ; EI
Language英语
WOS IDWOS:000460029500009
WOS KeywordLAYER
WOS Research AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS SubjectScience & Technology - Other Topics ; Materials Science ; Physics
Funding OrganizationNational Key R&D Program of China [2017YFC1404202] ; National Natural Science Foundation of China [11572332, 11232012] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040203]
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78499
Collection流固耦合系统力学重点实验室
Affiliation1.{Liu, Jiebin、Zhou, Jifu} Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
2.{Liu, Jiebin} China Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China
3.{Zhou, Jifu} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu JB,Zhou JF. Stability of mud-water interface under long surface waves[J]. AIP ADVANCES,2019,9(2):AR025009.
APA 刘杰斌,&周济福.(2019).Stability of mud-water interface under long surface waves.AIP ADVANCES,9(2),AR025009.
MLA 刘杰斌,et al."Stability of mud-water interface under long surface waves".AIP ADVANCES 9.2(2019):AR025009.
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