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	Numerical investigation of air-water flow properties over steep flat and pooled stepped spillways
	Li, Shuai1,2,3; Zhang, Jianmin4; Xu, Weilin4
刊名	JOURNAL OF HYDRAULIC RESEARCH
	2018
卷号	56期号:1页码:1-14
关键词	Air concentration air-water flows flow resistance stepped spillway turbulent dissipation rate velocity distribution water head dissipation ratio
ISSN号	0022-1686
DOI	10.1080/00221686.2017.1286393
英文摘要	This study numerically investigated eight configurations of stepped spillways with 45 degrees slopes. The rounded and sharped configurations exhibited the highest and second highest air concentrations, respectively. The baffled-shifted rounded configuration had the lowest air concentration and the highest turbulent dissipation rate and water head dissipation rate. The largest interfacial velocities and the smallest frictional drag were observed for the rounded configuration. The turbulent dissipation rate of the rounded configuration was higher than that of the sharped configuration. The silled-shifted sharped configuration had the lowest turbulent dissipation rate. Intense turbulent dissipation rates occurred in the mixing layer and the interfacial region with air concentrations of 90%. The residual energy of the baffled-shifted rounded configuration was approximately 8% and 13% lower than that of the rounded and sharped configurations, respectively. The highest residual energy under the baffled-shifted sharped configuration appeared to be associated with the lowest turbulent dissipation rate.
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000427885800001
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/22850]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Zhang, Jianmin
作者单位	1.Chinese Acad Sci, State Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 3.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China 4.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuai,Zhang, Jianmin,Xu, Weilin. Numerical investigation of air-water flow properties over steep flat and pooled stepped spillways[J]. JOURNAL OF HYDRAULIC RESEARCH,2018,56(1):1-14.
APA	Li, Shuai,Zhang, Jianmin,&Xu, Weilin.(2018).Numerical investigation of air-water flow properties over steep flat and pooled stepped spillways.JOURNAL OF HYDRAULIC RESEARCH,56(1),1-14.
MLA	Li, Shuai,et al."Numerical investigation of air-water flow properties over steep flat and pooled stepped spillways".JOURNAL OF HYDRAULIC RESEARCH 56.1(2018):1-14.

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