| Three-Dimensional Aerators: Characteristics of the Air Bubbles | |
Li, Shuai1,2 ; Zhang, Jianmin3; Chen, Xiaoqing1,2; Chen, Jiangang1,2
| |
| Corresponding Author | Zhang, Jianmin(zhangjianmin@scu.edu.cn) |
| 2018 | |
| Source Publication | WATER
 |
| ISSN | 2073-4441 |
| Volume | 10Issue:10Pages:20 |
| Subtype | Article |
| Abstract | Three-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. |
| Keyword | three-dimensional aerator air concentration air bubble frequency air bubble chord length |
| DOI | 10.3390/w10101430 |
| Indexed By | SCI |
| WOS Keyword | FREE-SURFACE AERATION ; HYDRAULIC STRUCTURES ; FLOW ; TRANSPORT |
| Language | 英语 |
| Quartile | 4区 |
| Funding Project | Chinese 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 | 否 |
| WOS Research Area | Water Resources |
| WOS Subject | Water Resources |
| WOS ID | WOS:000451208400145 |
| Funding Organization | Chinese Scholarship Council (CSC) ; CAS Light of West China Program ; National Science Fund for Distinguished Young Scholars ; Natural Science Foundation of China |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/24278 |
| Collection | 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 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Three-Dimensional Ae（10581KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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