| 顺坡渐扩矩形明渠水跃计算公式 |
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| 引用本文： | 赵顺安,宋志勇.顺坡渐扩矩形明渠水跃计算公式[J].水利学报,2005,36(6):0709-0714. |
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| 作者姓名： | 赵顺安 宋志勇 |
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| 作者单位： | 中国水利水电科学研究院,水力学研究所,北京,100044 |
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| 摘 要： | 顺坡渐扩矩形明渠常被用在排水工程中作为排水口与河道的连接段。由于河道水位变化，水跃将发生在连接段。本文从动量守恒原理出发推导了顺坡渐扩矩形明渠水跃方程，在假定水跃水质点作二维运动和水跃段内质点垂向加速度近似为常量的基础上推导了水跃长度近似计算公式。并与扩散角为9°、水平坡度角为6°特定条件的模型试验结果进行了对比，结果吻合良好，可供类似工程参考。
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| 关 键 词： | 顺坡渐扩 明渠 水跃 |
| 文章编号： | 0559-9350(2005)06-0709-06 |
| 修稿时间： | 2004年10月22 |
Formula for calculation of hydraulic jump in gradually broadened sloping open channel |
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| ZHAO Shun-an,SONG Zhi-yong.Formula for calculation of hydraulic jump in gradually broadened sloping open channel[J].Journal of Hydraulic Engineering,2005,36(6):0709-0714. |
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| Authors: | ZHAO Shun-an SONG Zhi-yong |
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| Affiliation: | China Institute of Water Resources and Hydropower Research, Beijing 100044, China |
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| Abstract: | The gradually broadened sloping open channel is often used to connect the outfall and river in draining engineering. Hydraulic jump will happen to the channel. Based on the momentum equation and continuous equation of the flow the formula for calculating this kind of hydraulic jump in rectangular channel is deduced. By assuming the flow is 2-D and the vertical accelerations of the particles in hydraulic jump are constant, an approximate formula for calculating hydraulic jump length is proposed. The validity of the proposed formula is verified by model test for channel with divergence angle 9° and slope 6°. |
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| Keywords: | hydraulic jump gradually broaden sloping channel length of jump |
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