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Two-dimension coupling model to simulate water flow, sediment transport and bed evolution
Liu, Wei1; He, Siming1,2,3; Xu, Qiang4
2017
Source PublicationHYDROLOGY RESEARCH
ISSN1998-9563
EISSN2224-7955
Volume48Issue:6Pages:1537-1553
SubtypeArticle
AbstractCatastrophic flood events worldwide have become increasingly more frequent and their dynamics mechanism has attracted much interest as how to predict them by numerical method. As the most common phenomenon occurs in the flowing process, entrainment and deposition can significantly influence flow mobility by increasing in mass and changing in flow character. In this paper, a two-dimension coupling model is presented to simulate water flow, sediment transport and bed evolution based on the shallow water assumption, depth-averaged integration as well as morphological evolution. A new term accounting for the sediment effect on the momentum conservation of water-sediment mixture is added to the model equations by assuming that the flow and the fixed bed is connected by an infinitesimally thin boundary layer, in which the erodible material gains the necessary velocity to enter the flow above. Comparison of numerical results and experimental data indicate the presented model can adequately describe the complex dynamic process, sediment transport and bed evolution. The velocity profile of flow can influence the momentum transfer between the water column and the erodible bottom boundary due to sediment exchange, further influencing flow mobility. Moreover, the velocity profile of flow changes with variations of sediment concentration, bed surface and friction resistance.
Keywordnumerical simulation sediment transport velocity profile water flow
DOI10.2166/nh.2016.139
Indexed BySCI
WOS KeywordDAM-BREAK FLOWS ; MOBILE BED ; WAVE
Language英语
Quartile4区
Funding ProjectNSFC[41272346] ; NSFC[41101008] ; National Science Fund for Distinguished Young Scholars[41225011]
TOP
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000416144600006
Funding OrganizationNSFC ; National Science Fund for Distinguished Young Scholars
PublisherIWA PUBLISHING
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20653
Collection山地灾害与地表过程重点实验室
Corresponding AuthorLiu, Wei
Affiliation1.Chinese Acad Sci, IMHE, Chengdu, Sichuan, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu, Sichuan, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
4.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Liu, Wei,He, Siming,Xu, Qiang. Two-dimension coupling model to simulate water flow, sediment transport and bed evolution[J]. HYDROLOGY RESEARCH,2017,48(6):1537-1553.
APA Liu, Wei,He, Siming,&Xu, Qiang.(2017).Two-dimension coupling model to simulate water flow, sediment transport and bed evolution.HYDROLOGY RESEARCH,48(6),1537-1553.
MLA Liu, Wei,et al."Two-dimension coupling model to simulate water flow, sediment transport and bed evolution".HYDROLOGY RESEARCH 48.6(2017):1537-1553.
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