摘要
鉴于挑流水舌碰撞效果关系到水垫塘消能效率且其碰撞入水形态复杂难以测量的问题,根据挑流水舌的形态特点,提出应用二维高斯函数表示挑流水舌碰撞后入水流量分布形态规律。应用该方法计算了白鹤滩水电站泄洪水舌落水分布情况,并针对局部流量集中的现象优化了泄洪孔口布置,改善了泄洪流量空间分配。物理模型试验证明,水垫塘动水压力分布形式与所提算法计算结果较为吻合,且优化后的泄洪孔口布置方案有效降低了水垫塘动水冲击压力,可用于指导泄洪消能布置的设计。
The impact effect of air jet is important to the energy dissipation efficiency of plunge pool, and it is difficult to measure the shape of the air jet. Two-dimensional Gaussian function was applied to represent the distribution of inflow after the jet impact according to the characteristics of the collision air flow. Flow distribution of flood discharge in Baihetan hydropower station was calculated by this method, and the layout of flood discharge was optimized to improve the spatial distribution of flood discharge according to the calculation results. It is verified by physical model test that hydrodynamic pressure distribution in the plunge pool is consistent with the calculation results. The hydrodynamic impact pressure of the plunge pool was reduced effectively by the optimized flood discharge layout, which can be used to guide the design of flood discharge and energy dissipation layout.
作者
徐建荣
辜晋德
颜志庆
何明杰
黄骏
XU Jian-rong;GU Jin-de;YAN Zhi-qing;HE Ming-jie;HUANG Jun(Huadong Eng.Co.,Ltd.,Power Construction Cor.of China,Hangzhou 310014,China;Nanjing Hydraulic Research Institute,Nanjing 210029,China)
出处
《水电能源科学》
北大核心
2022年第6期139-142,共4页
Water Resources and Power
基金
国家重点研发计划(2016YFC0401705)。
关键词
挑流
碰撞
高斯分布
泄洪消能
水垫塘
air jet
impact
Gaussian distribution
flood discharge energy dissipation
plunge pool
