摘要
采用RNGκ-ε紊流模型,结合气液两相流VOF模型以及标准壁面函数法对干捞水电站戽流消能水力特性进行数值模拟。得到了在设计洪水位条件下溢流坝下游河床自由水面、压强、流场分布以及消能影响范围等水力特性的变化规律。通过模拟结果与电站实际运行情况进行对比分析可知,本方法能够准确模拟出戽流消能的各项水力特性,并且为消能工的设计和优化提供参考依据。
In this paper the RNG κ-ε turbulence model,combined with the gas-liquid two-phase flow volume of fluid(VOF)model and the standard Wall function method was used to simulate the hydraulic characteristics of Gan-Lao Hydro-power Station's bucket flow energy dissipation. The hydraulic characteristics, such as pressure, free surface, flow field distribution and the energy dissipation range,of the river bed downstream from the spillway at the designed flood level were obtained. Comparison of the simulation result with the actual operation situation of the power plant suggests that this method can accurately simulate the hydraulic characteristics of the bucket flow and provide useful reference for the design and optimization of an energy dissipater.
出处
《电网与清洁能源》
北大核心
2015年第5期70-73,78,共5页
Power System and Clean Energy
基金
国家自然科学基金(51178391)资助~~
关键词
戽流
数值模拟
VOF法
bucket flow
numerical simulation
VOF method
