| 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
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| 2018 | |
| Source Publication | JOURNAL OF HYDRAULIC RESEARCH
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| ISSN | 0022-1686 |
| EISSN | 1814-2079 |
| Volume | 56Issue:3Pages:412-423 |
| Subtype | Article |
| Abstract | The 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. |
| Keyword | Air concentration air-water flows sudden expansion-fall aerator turbulent diffusion velocity distribution |
| DOI | 10.1080/00221686.2017.1372819 |
| Indexed By | SCI |
| WOS Keyword | ENTRAINMENT ; FLOWS ; WATER |
| Language | 英语 |
| Quartile | 3区 |
| Funding Project | Young 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 | 否 |
| WOS Research Area | Engineering ; Water Resources |
| WOS Subject | Engineering, Civil ; Water Resources |
| WOS ID | WOS:000435691900009 |
| Funding Organization | Young 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 |
| Publisher | TAYLOR & FRANCIS LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://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 Author | Zhang, Jianmin |
| Affiliation | 1.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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| File Name/Size | DocType | Version | Access | License | ||
| Air concentration an（2946KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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