弯曲溢洪道挑流消能方式选择及效果分析  

Selection and effect analysis of energy dissipation modes of curved spillway

作　　者：宋发军 Song Fajun(Water Conservancy Bureau of Fengjie County,Chongqing 404600,China)

机构地区：[1]重庆市奉节县水利局,重庆404600

出　　处：《能源与环保》2021年第9期181-185,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金项目(51579206)。

摘　　要：不同的挑流消能方式下弯曲溢洪道对水流的消能效果不同,研究并对比了差动式尾坎挑流和连续式尾坎挑流2种方式下,弯曲溢洪道水流消能的效果。采用的水气界面追踪方法为VOF方法,紊流模型为RNG k-ε模型,流速模拟软件为Flow-3D,该模型下仿真结果具有高度的可重复性。仿真结果表明,差动式尾坎挑流方式下,挑流水舌挑距为86 m,最大流速为35 m/s,消能率为21.7%;连续式尾坎挑流方式下,挑流水舌挑距为90 m,最大流速为36 m/s,消能率为17.9%。相比之下,差动式尾坎挑流方式下消能率更高,水流对下游和两岸的影响更小。The effect of curved spillway on water flow is different under different energy dissipation methods of flip bucket.This paper studies and compares the energy dissipation effect of curved spillway under differential tail bucket flip flow and continuous tail bucket flip flow.In this paper,the VOF method was used to track the air-water interface.The turbulence model is RNG k-εmodel,and the Flow-3D software was used for velocity simulation.The simulation results under this model have high repeatability.The simulation results showed that the flip distance of flip bucket is 86 m,the maximum velocity is 35 m/s,and the energy dissipation rate is 21.7%;in the continuous tail bucket,the flip distance is 90 m,the maximum velocity is 36 m/s,and the energy dissipation rate is 17.9%.In contrast,the energy dissipation rate is higher and the influence of water flow on the downstream and both sides is smaller.

关 键 词：溢洪道 消能方式 尾坎挑流 数值模拟 

分 类 号：TV651.1[水利工程—水利水电工程]