水电站多层进水口水力特性数值模拟研究  

Numerical study on hydraulic characteristics of multi-level intakes of hydropower stations

作　　者：高学平[1] 彭娴[1] 韩云鹏[1] 

机构地区：[1]天津大学水利工程仿真与国家安全重点实验室,天津300072

出　　处：《水力发电学报》2015年第3期90-95,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(51279125)

摘　　要：结合糯扎渡水电站、锦屏一级水电站和光照水电站,采用k-ε紊流模型对其多层进水口水力特性进行了三维数值模拟,对进水口水头损失、流速分布以及流态等方面进行了比较研究。数值模拟结果得到了模型试验结果的验证。研究结果表明,不同体型的多层进水口的水力特性差异主要取决于叠梁门墩的体型和叠梁门后进水室宽度。研究成果对多层进水口的体型设计具有指导意义。Hydraulic characteristics of multi-level intakes of hydropower stations are studied numerically in this work using a 3D k-ε turbulent model, with three study cases of the Nuozhadu, Jinping-I and Guangzhao hydropower stations, focusing on analysis and comparison of head loss, velocity distribution, and flow pattern. The numerical results have been verified against physical model tests. This study shows that for multi-level intakes, the differences in hydraulic characteristics primarily depend on the size of their stoplog piers and the width of their intake chambers. The results would provide useful information for design of multi-level intakes.

关 键 词：水电站 多层进水口 门叶挡水 水力特性 Κ-Ε紊流模型 

分 类 号：TV131.2[水利工程—水力学及河流动力学]