Effects of raindrop impact on the resistance characteristics of sheet flow
文献类型：期刊论文
| 作者 | Shen, Enshuai2,3,4; Liu, Gang2,3; Jia, Yafei5; Dan, Chenxi3; Abd Elbasit, Mohamed A. M.1; Liu, Chang3; Gu, Ju3; Shi, Hongqiang3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2021 |
| 卷号 | 592页码:10 |
| ISSN号 | 0022-1694 |
| 关键词 | Darcy-Weisbach resistance coefficient Manning coefficient Simulated rainfall Sheet flow Riandrop impact |
| DOI | 10.1016/j.jhydrol.2020.125767 |
| 通讯作者 | Liu, Gang(gliu@foxmail.com) |
| 英文摘要 | Raindrops impact (RDI) can disturb the flow structure of sheet runoff and thus change the flow resistance. In this study, multiple experimentally simulated rainfalls were applied on a flat and smooth flume with variable slopes. To identify the RDI effect, one half of the data was collected with the flume covered by a gauze screen near runoff surface. Comparisons of results indicated that RDI increased the flow resistance, reduced flow velocity and increased flow depth. Darcy-Weisbach resistance and Manning coefficient decreased in the slope range 2-12%, and kept almost constant in higher slope range. Corresponding approximately to 12% slope, Reynolds number, Re = 800 appears to be a critical value separating the laminar and turbulent flow regime under rainfall conditions. Empirical equations relating Darcy-Weisbach resistance coefficient and Manning coefficient to Reynolds number and rainfall intensity were obtained. In addition, empirical equations of the incremental resistance, due to RDI were established for laminar flows. This study revealed some aspects of RDI in the rainfall-runoff hydrologic processes. |
| WOS关键词 | VARYING SLOPE GRADIENTS ; OVERLAND-FLOW ; SOIL-EROSION ; HYDRAULIC CHARACTERISTICS ; ROUGHNESS COEFFICIENTS ; SEDIMENT TRANSPORT ; SURFACE-ROUGHNESS ; INTERRILL EROSION ; RAINFALL IMPACT ; DETACHMENT |
| 资助项目 | National Key Research and Development Program of China[2016YFE0202900] ; Natural Science Foundation of China[41761144060] ; Natural Science Basic Research Plan in Shaanxi Province of China[2020JM163] ; International Partnership Program of Chinese Academy of Sciences[161461KYSB20170013] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000639844900026 |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; International Partnership Program of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162514]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Gang |
| 作者单位 | 1.Agr Res Council, Inst Soil Climate & Water, Private Bag X79, ZA-0001 Pretoria, South Africa 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Univ Mississippi, Natl Ctr Computat Hydrosci & Engn, Oxford, MS 38677 USA |
| 推荐引用方式 GB/T 7714 | Shen, Enshuai,Liu, Gang,Jia, Yafei,et al. Effects of raindrop impact on the resistance characteristics of sheet flow[J]. JOURNAL OF HYDROLOGY,2021,592:10. |
| APA | Shen, Enshuai.,Liu, Gang.,Jia, Yafei.,Dan, Chenxi.,Abd Elbasit, Mohamed A. M..,...&Shi, Hongqiang.(2021).Effects of raindrop impact on the resistance characteristics of sheet flow.JOURNAL OF HYDROLOGY,592,10. |
| MLA | Shen, Enshuai,et al."Effects of raindrop impact on the resistance characteristics of sheet flow".JOURNAL OF HYDROLOGY 592(2021):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。