| 二度非均匀流流速分布初探 |
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| 引用本文： | 乐培九,朱玉德,崔喜凤.二度非均匀流流速分布初探[J].水道港口,2006,27(4):205-210. |
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| 作者姓名： | 乐培九 朱玉德 崔喜凤 |
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| 作者单位： | 交通部天津水运工程科学研究所,天津,300456 |
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| 摘 要： | 对雷诺(Reynolds)方程进行简化得到二度恒定非均匀流运动方程。考虑到非均匀流垂线剪力分布与均匀流不一致,将其差值称附加剪力。应用布辛涅斯克(Boussinesq)假定,最后获得二度恒定非均匀流垂线流速分布公式。计算与水槽试验实测结果符合良好。
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| 关 键 词： | 流速分布 附加剪力 加速流 减速流 |
| 文章编号： | 1005-8443（2006）04-0205-06 |
| 收稿时间： | 2006-04-04 |
| 修稿时间： | 2006-06-04 |
2-D velocity distribution of ununiform flow |
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| YUE Pei-jiu,ZHU Yu-de,CUI Xi-feng.2-D velocity distribution of ununiform flow[J].Journal of Waterway and Harbour,2006,27(4):205-210. |
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| Authors: | YUE Pei-jiu ZHU Yu-de CUI Xi-feng |
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| Institution: | Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China |
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| Abstract: | The equation of motion for two-dimensional steady ununiform flow is obtained by simplifying Revnolds equation.Considering the difference of vertical shear stress distribution between ununiform flow and uniform flow,the difference is known as additional shear stress.Based on the Boussinesq supposition,the formula of vertical velocity distribution for two-dimensional steady ununiform flow is established.The calculated result is in good agreement with the measured result in laboratory flume. |
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| Keywords: | velocity distribution additional shear stress accelerating flow decelerating flow |
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