| 溢流坝反弧水深的计算及反弧半径的选择 |
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| 引用本文： | 宁利中.溢流坝反弧水深的计算及反弧半径的选择[J].西安理工大学学报,1986(1). |
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| 作者姓名： | 宁利中 |
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| 作者单位： | 陕西机械学院水利水电工程系 |
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| 摘 要： | 本文应用恒定急变流能量方程,对溢流坝反弧水流进行了分析。将水头损失等因素用综合参数(q/R(gE_0)~(1/2)来反映,并进一步简化后得到包涵流线曲率影响的反弧水深计算式。应用该式对乌江渡原型和文献7]的模型计算结果能够与原型观测及模型试验相吻合。还提出了溢流坝反弧最低点水深突然上升、流速系数突然降低的判别式及流速系数最大时选择反弧半径的公式。
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| 关 键 词： | 溢流坝反孤段 急流水深 反弧半径 流速系数 |
CALCULATION OF THE SUPERCRITICAL FLOW DEPTH AT THE BUCKET AND BUCKET RADIUS OF OVER FLOW DAMS |
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| Ning Lizhong.CALCULATION OF THE SUPERCRITICAL FLOW DEPTH AT THE BUCKET AND BUCKET RADIUS OF OVER FLOW DAMS[J].Journal of Xi'an University of Technology,1986(1). |
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| Authors: | Ning Lizhong |
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| Institution: | Ning Lizhong |
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| Abstract: | Based on the energy equation of rapidly varied steady flow, the flow of spillway flip buckets is analysed. A synthetic parameter (q/R(gE_0)~(1/2)) and some simplifying conditions are introduced, also, formulas for caloulating the supercritical flow depth at the bucket of overflow dams are derived. The results computed by the formulas are in good agreement with those obtained by the model tests for overflow dam and prototype observations for the wujiangdu water Power Station. The criterion that at the minimum Of bucket of overflow dam the water is deepen immediately while the flow coefficient decrease immediately is suggested. Correspondingly, a formula for calculating the radius of bucket is obtained. |
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| Keywords: | Bucket of Overflow Dam Supercritical Flow Depth Bucket Radius Coefficient of velocity |
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