IMHE OpenIR  > 山地灾害与地表过程重点实验室
Numerical investigation of air water flow properties over steep flat and pooled stepped spillways
Li S(栗帅)1; Jianmin Zhang2; Weilin Xu2
Corresponding AuthorJIANMIN ZHANG
2017
Source PublicationJournal of Hydraulic Research
ISSN0022-1686
PagesDOI: 10.1080/00221686.2017.1286393
Abstract

This study numerically investigated eight configurations of stepped spillways with 45° 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.

KeywordAir Concentration Air–water Flows Flow Resistance Stepped Spillway Turbulent Dissipation Rate Velocity Distribution Water Head Dissipation Ratio
DOI10.1080/00221686.2017.1286393
Indexed BySCI
Language英语
Quartile3区
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20744
Collection山地灾害与地表过程重点实验室
Affiliation1.State Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, and Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041, Sichuan, PR China
2.State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, Sichuan, PR China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Li S,Jianmin Zhang,Weilin Xu. Numerical investigation of air water flow properties over steep flat and pooled stepped spillways[J]. Journal of Hydraulic Research,2017:DOI: 10.1080/00221686.2017.1286393.
APA Li S,Jianmin Zhang,&Weilin Xu.(2017).Numerical investigation of air water flow properties over steep flat and pooled stepped spillways.Journal of Hydraulic Research,DOI: 10.1080/00221686.2017.1286393.
MLA Li S,et al."Numerical investigation of air water flow properties over steep flat and pooled stepped spillways".Journal of Hydraulic Research (2017):DOI: 10.1080/00221686.2017.1286393.
Files in This Item:
File Name/Size DocType Version Access License
Numerical investigat(1701KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li S(栗帅)]'s Articles
[Jianmin Zhang]'s Articles
[Weilin Xu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li S(栗帅)]'s Articles
[Jianmin Zhang]'s Articles
[Weilin Xu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li S(栗帅)]'s Articles
[Jianmin Zhang]'s Articles
[Weilin Xu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Numerical investigation of air water flow properties over steep flat and pooled stepped spillways.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.