IMECH-IR  > 流固耦合系统力学重点实验室
A numerical wave-maker for internal solitary waves with timely updated mass source/sink terms
Wang X(王旭); Zhou JF(周济福); Yunxiang You; Wang, X (reprint author), Inst Mech, CAS Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Source PublicationEuropean Journal of Mechanics-B/Fluids
2017
Volume65Pages:274-283
ISSN0997-7546
Abstract

On the basis of the two-dimensional Navier-Stokes equations, a new numerical method is proposed to generate internal solitary waves (ISWs) of expected parameters by adding a source term above the interface and a sink term below the interface into the continuity equation. Fluxes between the source and the sink are balanced to assure mass conservation, and the source/sink regions (the spatial windows over which the sink/source terms are placed) are adjusted as functions of time with the interface motion. Thus, the nonphysical trailing waves can be eliminated, which makes it easy to assure the prescribed ISW parameters. Moreover, a new layout is presented to avoid the difficulty of sizing and positioning the source/sink region, which has been proved to be an intrinsic drawback of the traditional mass source method. Numerical experiments are performed to validate the proposed method by analyzing the wave displacements and vertical profiles of velocity fields. It is shown that the numerical waveform remains stable with much less trailing waves than previous methods, and the numerical results are in good agreement with theoretical and experimental results. In addition, through sensitivity analysis, a reasonable method to determine the width of source/sink region is recommended. (C) 2017 Elsevier Masson SAS. All rights reserved.

DOI10.1016/j.euromechflu.2017.04.005
Indexed BySCI
Language英语
WOS IDWOS:000408300200024
Funding Organizationational Natural Science Foundation of China 11602274 11232012 11572332 11172307 973 Program 2014CB046200 Chinese Academy of Sciences XDB22040203
DepartmentLMFS水环境流体力学(LEM)
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60692
Collection流固耦合系统力学重点实验室
Corresponding AuthorWang, X (reprint author), Inst Mech, CAS Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang X,Zhou JF,Yunxiang You,et al. A numerical wave-maker for internal solitary waves with timely updated mass source/sink terms[J]. European Journal of Mechanics-B/Fluids,2017,65:274-283.
APA Wang X,Zhou JF,Yunxiang You,&Wang, X .(2017).A numerical wave-maker for internal solitary waves with timely updated mass source/sink terms.European Journal of Mechanics-B/Fluids,65,274-283.
MLA Wang X,et al."A numerical wave-maker for internal solitary waves with timely updated mass source/sink terms".European Journal of Mechanics-B/Fluids 65(2017):274-283.
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