电站进水口的水流数值模拟分析  

Flow Numerical simulation of hydropower station intake

作　　者：任坤杰[1] 王凤[1] 韩继斌[1] 

机构地区：[1]长江科学院水力学研究所,湖北武汉430010

出　　处：《人民长江》2010年第15期63-66,共4页Yangtze River

摘　　要：采用k-ε紊流数学模型对电站进水口水流进行了三维数值模拟。模型利用有限体积法对方程进行离散,采用对压强初始值依赖性不强且收敛性较好的SIMPLER数值方法,自由表面采用VOF追踪模拟法。结果表明:计算得到的流态、流速、压强及水头损失等水力要素与物理模型试验成果吻合较好,这说明所建立的模拟大区域复杂进水口水流的方法是可靠的,可为类似工程设计、计算提供参考。A 3D flow numerical simulation is carried out for hydropower station intake by k-ε turbulent numerical model.We adopt finite volume method for equation discretization and volume of fraction（VOF） for tracking free surface,and use SIMPLER method with little dependency on initial pressure intensity and better convergence as numerical computation method.The calculation results show that the hydraulic parameters such as flow pattern,flow velocity,pressure and head loss simulated by the numerical simulation match well with the physical model test results.Therefore,the numerical simulation method used for complex large-area intake is reliable and can be taken as references for the project design and numerical simulation of similar projects.

关 键 词：k-ε紊流数学模型 SIMPLER法 VOF法 水力要素 电站进水口 

分 类 号：TV732.1[水利工程—水利水电工程]