IMHE OpenIR  > 山地灾害与地表过程重点实验室
Three-Dimensional Aerators: Characteristics of the Air Bubbles
Li, Shuai1,2; Zhang, Jianmin3; Chen, Xiaoqing1,2; Chen, Jiangang1,2
Corresponding AuthorZhang, Jianmin(zhangjianmin@scu.edu.cn)
2018
Source PublicationWATER
ISSN2073-4441
Volume10Issue:10Pages:20
SubtypeArticle
AbstractThree-dimensional aerators are often used in hydraulic structures to prevent cavitation damage via enhanced air entrainment. However, the mechanisms of aeration and bubble dispersion along the developing shear flow region on such aerators remain unclear. A double-tip conductivity probe is employed in present experimental study to investigate the air concentration, bubble count rate, and bubble size downstream of a three-dimensional aerator involving various approach-flow features and geometric parameters. The results show that the cross-sectional distribution of the air bubble frequency is in accordance with the Gaussian distribution, and the relationship between the air concentration and bubble frequency obeys a quasi-parabolic law. The air bubble frequency reaches an apex at an air concentration (C) of approximately 50% and decreases to zero as C = 0% and C = 100%. The relative location of the air-bubble frequency apex is 0.210, 0.326 and 0.283 times the thickness of the layers at the upper, lower and side nappes, respectively. The air bubble chord length decreases gradually from the air water interface to the core area. The air concentration increases exponentially with the bubble chord length. The air bubble frequency distributions can be fit well using a "modified" gamma distribution function.
Keywordthree-dimensional aerator air concentration air bubble frequency air bubble chord length
DOI10.3390/w10101430
Indexed BySCI
WOS KeywordFREE-SURFACE AERATION ; HYDRAULIC STRUCTURES ; FLOW ; TRANSPORT
Language英语
Quartile4区
Funding ProjectChinese Scholarship Council (CSC)[201804910306] ; CAS Light of West China Program[Y6R2220220] ; National Science Fund for Distinguished Young Scholars[51625901] ; Natural Science Foundation of China[51579165]
TOP
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000451208400145
Funding OrganizationChinese Scholarship Council (CSC) ; CAS Light of West China Program ; National Science Fund for Distinguished Young Scholars ; Natural Science Foundation of China
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24278
Collection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 Proc, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci & Minist Water Conservancy, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
3.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. Three-Dimensional Aerators: Characteristics of the Air Bubbles[J]. WATER,2018,10(10):20.
APA Li, Shuai,Zhang, Jianmin,Chen, Xiaoqing,&Chen, Jiangang.(2018).Three-Dimensional Aerators: Characteristics of the Air Bubbles.WATER,10(10),20.
MLA Li, Shuai,et al."Three-Dimensional Aerators: Characteristics of the Air Bubbles".WATER 10.10(2018):20.
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