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Experiments on Longitudinal and Transverse Bedload Transport in Sine-Generated Meandering Channels
He, Li1; Chen, Dong1,2; Termini, Donatella3; Zhang, Shiyan1; Zhu, Zhenhui4
2021-07-01
Source PublicationAPPLIED SCIENCES-BASEL
Volume11Issue:14Pages:13
Corresponding AuthorChen, Dong(dchen@igsnrr.ac.cn)
AbstractBedload grains in consecutive meandering bends either move longitudinally or across the channel centerline. This study traces and quantifies the grains' movement in two laboratorial sine-generated channels, i.e., one with deflection angle theta(0) = 30 degrees and the other 110 degrees. The grains originally paved along the channels are uniform in size with D = 1 mm and are dyed in various colors, according to their initial location. The experiments recorded the changes in the flow patterns, bed deformation, and the gain-loss distribution of the colored grains in the pool-bar complexes. We observed the formation of two types of erosion zones during the process of the bed deformation, i.e., Zone 1 in the foreside of the point bars and Zone 2 near the concave bank downstream of the bend apexes. Most grains eroded from Zone 1 are observed moving longitudinally as opposed to crossing the channel centerline. Contrastingly, the dominant moving direction of the grains eroded from Zone 2 changes from the longitudinal direction to the transversal one as the bed topography evolves. Besides, most building material of the point bars comes from the upstream bends, although low- and highly curved channels behave differently.
Keywordbedload transport meandering channels experiments
DOI10.3390/app11146560
WOS KeywordBEND THEORY
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFC0405203] ; National Natural Science Foundation of China[51779242] ; National Natural Science Foundation of China[51979264]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS Research AreaChemistry ; Engineering ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000675949900001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163704
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, Dong
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100101, Peoples R China
3.Univ Palermo, Dept Engn, I-90128 Palermo, Italy
4.Yellow River Inst Hydraul Res, Zhengzhou 450003, Peoples R China
Recommended Citation
GB/T 7714
He, Li,Chen, Dong,Termini, Donatella,et al. Experiments on Longitudinal and Transverse Bedload Transport in Sine-Generated Meandering Channels[J]. APPLIED SCIENCES-BASEL,2021,11(14):13.
APA He, Li,Chen, Dong,Termini, Donatella,Zhang, Shiyan,&Zhu, Zhenhui.(2021).Experiments on Longitudinal and Transverse Bedload Transport in Sine-Generated Meandering Channels.APPLIED SCIENCES-BASEL,11(14),13.
MLA He, Li,et al."Experiments on Longitudinal and Transverse Bedload Transport in Sine-Generated Meandering Channels".APPLIED SCIENCES-BASEL 11.14(2021):13.
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