Improved formulae of velocity distributions along the vertical and transverse directions in natural rivers with the sidewall effect
文献类型：期刊论文
| 作者 | Jinyou Lu1; Yinjun Zhou1; Yonghui Zhu1; Junqiang Xia2; Li Wei3; Wei, Li
|
| 刊名 | ENVIRONMENTAL FLUID MECHANICS
 |
| 出版日期 | 2018 |
| 卷号 | 18期号:6页码:1491-1508 |
| 关键词 | Definite solution problem Method of variable separation Velocity distribution formula Narrow-deep rivers Sidewall effect |
| ISSN号 | 1567-7419 |
| DOI | 10.1007/s10652-018-9608-6 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The distribution of flow velocity is a basis for the research into the transport of flow and sediment in natural rivers. Characteristics of velocity distribution in narrow-deep natural rivers are different from those in wide-shallow open channels, and the effect of sidewalls on the distribution of flow velocity is considerable, which leads to a large transverse gradient of the depth-averaged velocity, with the maximum velocity occurring below the water surface. Based on the Reynolds equation of turbulence flow and the analysis of the features of velocity distribution in natural rivers, improved formulae with two empirical parameters and have been proposed for the velocity distributions along the vertical and transverse directions, with the effect of sidewalls being considered, through solving the definite solution problem by the method of variable separation. The proposed formulae were validated fully through comparisons between the calculated and measured velocity profiles and depth-averaged velocities at several sections in the Yangtze and Baitarani Rivers, with close agreement between them being obtained. The formula of velocity distribution along the transverse direction in natural rivers with the sidewall effect was also compared with previous studies, and the calculation accuracy of this formula at a section with a narrow-deep geometry was higher than the accuracy of the previous equations. It is confirmed that the proposed formulae can reproduce well the distribution characteristics of flow velocity along the vertical and transverse directions in narrow-deep natural rivers, with a more wide application in practice. |
| 电子版国际标准刊号 | 1573-1510 |
| 语种 | 英语 |
| WOS记录号 | WOS:000451034700008 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/24451]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Junqiang Xia |
| 作者单位 | 1.Changjiang River Scientific Research Institute; and Key Laboratory of River Regulation and Flood Control of the Ministry of Water Resources, Wuhan 430010, China; 2.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 3.Institute of Mountain Hazards and Environment, CAS, Chengdu 610065, China |
| 推荐引用方式 GB/T 7714 | Jinyou Lu,Yinjun Zhou,Yonghui Zhu,et al. Improved formulae of velocity distributions along the vertical and transverse directions in natural rivers with the sidewall effect[J]. ENVIRONMENTAL FLUID MECHANICS,2018,18(6):1491-1508. |
| APA | Jinyou Lu,Yinjun Zhou,Yonghui Zhu,Junqiang Xia,Li Wei,&Wei, Li.(2018).Improved formulae of velocity distributions along the vertical and transverse directions in natural rivers with the sidewall effect.ENVIRONMENTAL FLUID MECHANICS,18(6),1491-1508. |
| MLA | Jinyou Lu,et al."Improved formulae of velocity distributions along the vertical and transverse directions in natural rivers with the sidewall effect".ENVIRONMENTAL FLUID MECHANICS 18.6(2018):1491-1508. |
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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