IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Air concentration and velocity downstream of an expanding chute aerator
Li, Shuai1,2,3; Zhang, Jianmin4; Chen, Xiaoqing1,2,3; Zhou, Gordon G. D.1,2,3
2018
Source PublicationJOURNAL OF HYDRAULIC RESEARCH
ISSN0022-1686
EISSN1814-2079
Volume56Issue:3Pages:412-423
SubtypeArticle
AbstractThe mechanisms of air entrainment and velocity distribution at the upper, lower and side air-water interfaces downstream of chute aerators remain unclear. This study reports a series of experiments involving various approach-flow features and geometric parameters of aerators. Analytical solutions are developed for the air concentration profiles in the air-water layers, and it is shown that the solutions agree well with the experiments. Empirical equations are established for the turbulent diffusion of bubbles and the diffusion rate of the aeration layer. The turbulent diffusion coefficient of the lower nappe is found to be approximately 10 times and 1.2-1.8 times larger than those of the upper and side nappes, respectively. The diffusion rate of the aeration layer is the highest at the lower nappe and lowest at the upper nappe, gradually decreasing along the cavity. The velocity distribution indices are found to be different for the upper, lower and side nappes.
KeywordAir concentration air-water flows sudden expansion-fall aerator turbulent diffusion velocity distribution
DOI10.1080/00221686.2017.1372819
Indexed BySCI
WOS KeywordENTRAINMENT ; FLOWS ; WATER
Language英语
Quartile3区
Funding ProjectYoung Scientists Research Fund of the Institute of Mountain Hazards and Environment, CAS[Y6K2080080] ; CAS "Light of West China" Program[Y6R2220220] ; National Science Fund for Distinguished Young Scholars[51625901] ; National Natural Science Foundation of China[51579165]
TOP
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Civil ; Water Resources
WOS IDWOS:000435691900009
Funding OrganizationYoung Scientists Research Fund of the Institute of Mountain Hazards and Environment, CAS ; CAS "Light of West China" Program ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23339
Collection山地表生过程与生态调控重点实验室
山地灾害与地表过程重点实验室
Corresponding AuthorZhang, Jianmin
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proce, Chengdu, 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
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, Shuai,Zhang, Jianmin,Chen, Xiaoqing,et al. Air concentration and velocity downstream of an expanding chute aerator[J]. JOURNAL OF HYDRAULIC RESEARCH,2018,56(3):412-423.
APA Li, Shuai,Zhang, Jianmin,Chen, Xiaoqing,&Zhou, Gordon G. D..(2018).Air concentration and velocity downstream of an expanding chute aerator.JOURNAL OF HYDRAULIC RESEARCH,56(3),412-423.
MLA Li, Shuai,et al."Air concentration and velocity downstream of an expanding chute aerator".JOURNAL OF HYDRAULIC RESEARCH 56.3(2018):412-423.
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