水力发电2017，Vol.43Issue(7)：46-52,7.
过渡阶梯大小对一体化消能工消能特性的影响研究
Impact of Transition Ladder Size on Energy Dissipation of Integrated Energy Dissipater
摘要
Abstract
The integrated energy dissipater consisted of flaring gate pier,staircase spillway dams and stilling pool is widely used in modern high-head large unit width hydropower project.Based on Ahai Hydropower Station,the impacts of the connection of WES surface and staircase spillway dams on hydraulic characteristic of energy dissipater are studied.The gas-liquid two-phase flow VOF computing method complemented with 3-D RNG k-ε turbulence model are used to simulate four transition ladder schemes,which include 12 steps with size of 0.5 m ×0.375 m (hight ×width),6 steps with size of 1 m ×0.75 m,3 steps with size of 2 m × 1.5 m and 4 steps with size of 3 m × 2.25 m.The results show that:(a) with the increase of transition ladder size,the maximum turbulent kinetic energy k of dam face is gradually reduced,the maximum turbulent dissipation rate ε is gradually increased and the energy dissipation rate is also gradually increased;and (b) the distribution rules of k and ε in stilling basin are basically same in the bottom and middle of the front end of stilling basin.The transition ladder scheme with two 3 m × 2.25 m steps has best energy dissipation.关键词
三维数值模拟/过渡阶梯/湍流动能/湍流耗散率/消能率/阿海水电站Key words
three dimensional numerical simulation/transition ladder/turbulence energy/turbulent dissipation rate/energy dissipation rate/Ahai Hydropower Station分类
建筑与水利引用本文复制引用
王强,杨具瑞,张钟阳,杨恩其,石碧海,蒋瑜..过渡阶梯大小对一体化消能工消能特性的影响研究[J].水力发电,2017,43(7):46-52,7.基金项目
国家自然科学基金资助项目(51569010) （51569010）
