| 二元混合流床面剪应力特性的初步研究 |
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| 引用本文： | 庄荣文,郭子中.二元混合流床面剪应力特性的初步研究[J].河海大学学报(自然科学版),1987(6). |
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| 作者姓名： | 庄荣文 郭子中 |
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| 作者单位： | 河海大学工程力学系，河海大学工程力学系 |
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| 摘 要： | 本文叙述用Preston管量测的二元混合流各典型流态的床面剪应力分布,结合实验结果,对二元混合流名典型流态的床面摩阻特性进行了理论探讨。在此基础上,对特例混合流床面摩阻特性进行了定量分析。
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| 关 键 词： | 混合流动 剪切流动 剪应力 摩擦系数 普雷斯顿管 |
Boundary Shear Stress Characteristics in 2-D Combined Flow |
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| Zhuang Rongwen,Guo Zizhong.Boundary Shear Stress Characteristics in 2-D Combined Flow[J].Journal of Hohai University (Natural Sciences ),1987(6). |
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| Authors: | Zhuang Rongwen Guo Zizhong |
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| Institution: | Zhuang Rongwen;Guo Zizhong |
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| Abstract: | The bed boundary shear stress in a series of major flow states of 2-D combined flow,defined as the combination of a water jet with a hydraulic jump,is measured by means of laboratory-manufactured Preston tube.The measured values have been converted to non-dimensional values of skin friction factor C.The parameters influencing the skin friction factor and its distribution along the bed are analysed.The characteristics of the bed skin friction under the typical flow state in 2-D combined flow are discussed qualitatively,and those under the special flow state(hydraulic jump)are discussed quantitatively.A method is proposed to design the length of stilling basins according to the allowable shear stress in a channel bed. |
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| Keywords: | combined flow shear flow shear stress friction coefficient Preston tube |
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