Air concentration and velocity downstream of an expanding chute aerator
文献类型：期刊论文
| 作者 | Li, Shuai1,2,3 ; Zhang, Jianmin4; Chen, Xiaoqing1,2,3; Zhou, Gordon G. D.1,2,3
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| 刊名 | JOURNAL OF HYDRAULIC RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 56期号:3页码:412-423 |
| ISSN号 | 0022-1686 |
| 关键词 | Air concentration air-water flows sudden expansion-fall aerator turbulent diffusion velocity distribution |
| DOI | 10.1080/00221686.2017.1372819 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| 出版者 | TAYLOR & FRANCIS LTD |
| WOS记录号 | WOS:000435691900009 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23339]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 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, 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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