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 引用本文: 曾玉红, 王月华, 槐文信. 梯形复式断面均匀流水力计算[J]. 应用数学和力学, 2010, 31(8): 901-908.
ZENG Yu-hong, WANG Yue-hua, HUAI Wen-xin. Hydraulic Calculation of Steady Uniform Flows in Trapezoidal Compound Open Channels[J]. Applied Mathematics and Mechanics, 2010, 31(8): 901-908. doi: 10.3879/j.issn.1000-0887.2010.08.002
 Citation: ZENG Yu-hong, WANG Yue-hua, HUAI Wen-xin. Hydraulic Calculation of Steady Uniform Flows in Trapezoidal Compound Open Channels[J]. Applied Mathematics and Mechanics, 2010, 31(8): 901-908.

• 中图分类号: TV131

## Hydraulic Calculation of Steady Uniform Flows in Trapezoidal Compound Open Channels

• 摘要: 对由主槽、斜边坡以及边滩三部分组成的梯形复式断面渠道均匀流的水力计算进行了研究，采用表观切应力表示各子断面间的横向动量交换，结合各部分力的平衡关系式，推导出了主槽、斜边坡和边滩平均流速的计算公式．采用UK-FCF的实验数据对公式进行了验证，滩槽相对水深为0.057~0.4的7组工况计算值与实测值的比较表明，不考虑表观切应力的计算值与实测值的一致性都较差．比较而言，斜边坡部分平均流速在水深较小时计算值大于实测值，在水深较大时计算值小于或接近实测值，表观切应力对边滩部分平均流速的影响不明显，而主槽部分若不考虑表观切应力的影响，则计算值与实测值差别较大．运用三段式模型与刘沛清等提出的两段式模型分别进行了有边坡梯形断面复式渠道的水力计算，结果表明对于有边坡段的梯形断面渠道（河道），三段式模型更加有效．最后，将计算的表观切应力与实测表观切应力进行了比较，两者的一致性表明采用的动量输运系数是合适的．
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##### 出版历程
• 收稿日期:  1900-01-01
• 修回日期:  2010-06-25
• 刊出日期:  2010-08-15

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