| 边界层理论在陡坡坡面流速计算中的应用 |
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| 引用本文： | 戴 爽,詹美礼,盛金昌,罗玉龙.边界层理论在陡坡坡面流速计算中的应用[J].水电能源科学,2012,30(12):107-110. |
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| 作者姓名： | 戴 爽 詹美礼 盛金昌 罗玉龙 |
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| 作者单位： | 河海大学 水利水电学院, 江苏 南京 210098;河海大学 水利水电学院, 江苏 南京 210098;河海大学 水利水电学院, 江苏 南京 210098;河海大学 水利水电学院, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金资助项目（51079039，51009053） |
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| 摘 要： | 坡面流是研究土壤侵蚀机理的关键，流速计算受多因素影响尤显复杂，为此提出了应用陡坡紊流边界层名义厚度方程求解坡面流流速的分布，探讨了经典边界层理论模型，修正了传统边界层的势流流速，推导出适用于描述坡面流流动特性的理论模型，考虑到下垫面及水温等的影响，构建了分类计算平均流速的计算模型，并验证了计算模型的可行性。
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| 关 键 词： | 边界层 陡坡 坡面流 计算模型 |
Application of Boundary Layer Theory to Velocity Calculation of Steep Slope Runoff |
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| DAI Shuang,ZHAN Meili,SHENG Jinchang and LUO Yulong.Application of Boundary Layer Theory to Velocity Calculation of Steep Slope Runoff[J].International Journal Hydroelectric Energy,2012,30(12):107-110. |
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| Authors: | DAI Shuang ZHAN Meili SHENG Jinchang and LUO Yulong |
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| Affiliation: | College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China;College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China;College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China;College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China |
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| Abstract: | The overland flow is the crux of the research for soil erosion and the calculation of its velocity is a complicated problem. The thickness equation of turbulent boundary layer on a steep channel is put forward to solve the velocity distribution of overland flow. The theoretical model of classic boundary layer is discussed. The velocity of potential flow for traditional boundary layer is improved. A suitable theory model for describing the flow characteristics of overland flow is deduced. Considering the influence of underlying surface and the temperature of water, average flow velocity calculation model is established for classification computation and it verifies the feasibility of the calculation formula. |
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| Keywords: | boundary layer steep slope overland flow calculation model |
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