溢洪道弯曲段反超高方案优化数值模拟

The numerical simulation of spillway curve inverse extra-high optimization scheme

针对溢洪道弯曲段凹岸与凸岸水位、水深差值大的问题,选择重庆石梁扣水电站溢洪道为研究对象,基于常用的反超高优化方案对弯曲段进行优化设计,并借助SMS流体计算软件建立二维数模进行计算分析。分析结果显示,相比来看,反超高优化方案通过凸岸抬高与凹岸下降的共同作用,有效消减弯曲段两侧水头、流速差,及水流横向位移,对溢洪道内流场分布、水流结构具有明显的改善作用。

The water on both sides of the spillway curve bending section was deep, with large water depth difference. This paper choosed Chongqing Shiliangkou hydropower station spillway buckle as the research object, this paper adopted the commonly used inverse extra-high optimization scheme to optimize the design, using SMS of a planar 2 d mathematical model for numerical simulation. The results showed that, through the combined action of convex elevation and concave downward, inverse extra-high optimization scheme could effectively reduce the water head and velocity difference, lateral movement of water, and the distribution of the flow field and the flow structure in the spillway were obviously improved.