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	Modeling curvature- and topography-driven secondary currents in sine-generated meandering channels
	Chen D.; He L.
	2013
会议名称	World Environmental and Water Resources Congress 2013: Showcasing the Future, May 19, 2013 - May 23, 2013
会议地点	Cincinnati, OH, United states
关键词	Water resources Experiments Sediment transport Topography
页码	1727-1735
英文摘要	This study examines the influences of curvature-driven and topography-driven secondary currents on the shifting or redistribution of primary flow in sine-generated meandering channels by using CCHE2D - a depth-averaged two-dimensional hydrodynamic and sediment transport model. Calculated results are compared to data measured in two sets of published laboratory experiments that investigated the characteristics of curved flow under well-controlled boundary conditions including steady flow and uniform-size bed material. The two sets of experiments, i.e., da Silva (1995) and Termini (2009), are selected as the representatives of immobile and mobile bed cases, respectively. Calculated results indicated that the shifting of primary flow from inner to outer banks in the curved channels is dominated by topography-induced current rather than the secondary flow driven by curvature. This understanding of the relative impacts of curvature and topographic-driven secondary currents will improve the understanding of flow structure in meanders and stable channel design. 2013 American Society of Civil Engineers.
收录类别	EI
会议录出版者	American Society of Civil Engineers (ASCE)
语种	英语
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/31013]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Chen D.,He L.. Modeling curvature- and topography-driven secondary currents in sine-generated meandering channels[C]. 见:World Environmental and Water Resources Congress 2013: Showcasing the Future, May 19, 2013 - May 23, 2013. Cincinnati, OH, United states.

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