摘要
结合长距离无压引水隧洞充水过程,建立了水气两相流耦合VOF(Volume of Fluid)法的k-ε紊流模型,近壁面采用考虑糙率影响的壁面函数,结合实际工程对长距离无压引水隧洞水气两相流进行了模拟。模拟结果表明:隧洞内水位随充水时间的增加逐渐上升并趋于稳定;对隧洞充水过程中沿程典型断面的水气两相流进行了动态分析,结果表明进口流量为65 m3/s时水流能顺利通过隧洞;对某水库放水兼放空洞水深实测数据进行了验证对比,模拟结果与实验结果基本吻合。
In accordance with the water-filling process of long-distance non-pressure water diversion tunnel,k-ε turbulence model of water-air two-phase flow coupled with the Volume of Fluid(VOF) method is established;for which the roughness considered wall-function is taken for the near-wall.And then,the water-air two-phase flow of the long-distance non-pressure water diversion tunnel is simulated based on an actual project.The simulation shows that water level in the tunnel increases with the filling time and tends ...
出处
《水利水电技术》
CSCD
北大核心
2009年第4期36-40,共5页
Water Resources and Hydropower Engineering
基金
国家重点基础研究发展计划资助项目(2007CB714101)
"十一五"国家科技支撑计划项目(2006BAB04A13)
国家自然科学基金(50879053
50579045)
天津市应用基础及前沿技术研究计划(08JCZDJC25400)
关键词
长距离无压引水隧洞
水气两相流
VOF法
K-Ε紊流模型
充水过程
long-distance non-pressure water diversion tunnel
water-air two-phase flow
Volume of Fluid（VOF） method
k-ε turbulence model
water-filling process
