| 溢流反弧段的壁面摩阻特性的分析与计算 |
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| 引用本文： | 牛争呜,张志昌,李建中.溢流反弧段的壁面摩阻特性的分析与计算[J].西安理工大学学报,1993(1). |
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| 作者姓名： | 牛争呜 张志昌 李建中 |
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| 作者单位： | 陕西机械学院水利水电学院，陕西机械学院水利水电学院，陕西机械学院水利水电学院 |
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| 摘 要： | 本文将流速对数律和流速指数律相联系,推导了溢流反弧段的摩阻流速的计算公式,对其进行了分析。并利用所量测的反弧段流速指数和边界层的资料,计算了不同粗糙度和不同曲率半径时反弧壁面摩阻流速及切应力等。
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| 关 键 词： | 反弧段摩阻流速 流速对数律和指数律 粗糙度和曲率 |
Analysis and Calculation upon the Surface Friction Characteristic of Bucket of Spillway Dam |
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| Niu Zhengming Zhang Zhichang Li Jianzhong.Analysis and Calculation upon the Surface Friction Characteristic of Bucket of Spillway Dam[J].Journal of Xi'an University of Technology,1993(1). |
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| Authors: | Niu Zhengming Zhang Zhichang Li Jianzhong |
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| Institution: | Niu Zhengming Zhang Zhichang Li Jianzhong |
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| Abstract: | In this paper, a formula which calculate the friction velocity on bucket of spillway dam has been deduced by connecting the exponential law of velocity with the logarithmic law of velocity. The friction velocity and surface viscous shear stress on bucket have been calcu- lated by using the formation measuring results. Some effects of surface roughness and survature on the friction velocity and surface viscous shear strees have been revealed. |
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| Keywords: | friction velocity of bucket exponential law and lagarithmic law of velocity roughness and curvature |
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