【摘要】 根据溢流坝反弧段水流运动的基本方程,考虑水流边界层的影响,在流线曲率同心圆假设条件下,得到了溢流坝反弧段水流压强计算的表达式。通过引入近壁薄流层要领和缓和过渡流线假设,在水工模型试验的基础上,得到了溢流坝反弧段水流流线曲率半径的计算公式,使反弧段离心力影响范围内的水流流线曲率光滑连续,从而得到反弧段水流压强分布规律的统一表达式,该表达式能够反映水流压强沿反弧法线方向及切线方向的变化规律。更多还原

【Abstract】 The formula to calculate the ditributed hydraulic pressure to spillway bucket is established based on fluid movement equations considering boundary effects,and the assumption of concentric circle of streamline. By means of the model experiments,the description of water streamline curvature on spillway bucket is presented by introducing the conception of thin closing wall layer and assumption of moderation transition streamline to smooth the streamline in the region affected by centrifugal force,which reflects the rule of water flow pressure along normal and tangent direction of bucket.更多还原