戽流消能水力特性数值模拟  

Numerical Simulation of Hydraulic Characteristics of Bucket Flow Energy Dissipation

作　　者：赵小军 魏文礼[2] 

机构地区：[1]中国能源建设集团广西电力设计研究院有限公司,广西南宁530000 [2]西安理工大学,陕西西安710048

出　　处：《电网与清洁能源》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~~

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.

关 键 词：戽流 数值模拟 VOF法 

分 类 号：TV135.2[水利工程—水力学及河流动力学]