Dynamics of interfacial gravity-capillary waves in three-dimensional fluids of great depth

doi:10.1016/j.compfluid.2021.105151

IMECH-IR > 流固耦合系统力学重点实验室

	Dynamics of interfacial gravity-capillary waves in three-dimensional fluids of great depth
	Li HY(李海艳)1,2 ; Wang Z(王展)1,2,3
通讯作者	Wang, Zhan(zwang@imech.ac.cn)
发表期刊	COMPUTERS & FLUIDS
	2021-12-15
卷号	231 页码:13
ISSN	0045-7930
摘要	This paper proposes a new isotropic bidirectional model for weakly nonlinear gravity-capillary waves propagating between two incompressible, inviscid, and immiscible fluids of different densities. The newly developed equation is a generalization of the celebrated two-dimensional Benjamin equation. It is derived based on the nonlocal formulation of water wave (i.e., the Ablowitz-Fokas-Musslimani formulation) and computed with the modified exponential time-differencing method. It is found that horizontally two-dimensional, fully localized traveling waves (known as lumps) exist in the model equation, and plane solitary waves are unstable subject to long transverse perturbations, which evolve into groups of lumps in the long-term dynamics. When considering topographical disturbances on the rigid upper boundary, the nonlinear effect becomes important when a uniform flow passes beneath a locally confined topography with a near-critical speed, and the phenomenon of time-periodic shedding of lumps occurs. Unlike the near-critical situation, the subcritical flows usually generate steady elevation waves, while the supercritical ones produce a V-shaped pattern of wake lines. Furthermore, it is shown that a uniformly accelerated motion can also generate lumps provided that the flow stays in the transcritical regime for a considerably long time.
关键词	Isotropic model ETD Interfacial wave Capillary-gravity wave
DOI	10.1016/j.compfluid.2021.105151
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000708699100005
关键词[WOS]	SOLITARY WAVES ; WATER ; GENERATION
WOS研究方向	Computer Science ; Mechanics
WOS类目	Computer Science, Interdisciplinary Applications ; Mechanics
资助项目	National Natural Science Foun-dation of China[11911530171] ; National Natural Science Foun-dation of China[11772341] ; National Natural Science Foun-dation of China[12132018] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040203]
项目资助者	National Natural Science Foun-dation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	二类
力学所作者排名	1
RpAuthor	Wang, Zhan
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87632
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li HY,Wang Z. Dynamics of interfacial gravity-capillary waves in three-dimensional fluids of great depth[J]. COMPUTERS & FLUIDS,2021,231:13.
APA	李海艳,&王展.(2021).Dynamics of interfacial gravity-capillary waves in three-dimensional fluids of great depth.COMPUTERS & FLUIDS,231,13.
MLA	李海艳,et al."Dynamics of interfacial gravity-capillary waves in three-dimensional fluids of great depth".COMPUTERS & FLUIDS 231(2021):13.

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