竖井进流水平旋转内消能泄洪洞的数值模拟  

Numerical Simulation of Level Swirling Flow of Inner Energy Dissipation Discharge Tunnel with Shaft Inlet

作　　者：曹双利[1,2] 牛争鸣[1] 付波[3] 吴小丽[1] 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048 [2]云南金沙江中游水电开发有限公司,云南昆明650051 [3]广东省水利水电科学研究院,广东广州510610

出　　处：《西安理工大学学报》2009年第3期263-269,共7页Journal of Xi'an University of Technology

基　　金：国家自然科学基金-雅砻联合基金资助项目(50579086)

摘　　要：通过选取三种不同的紊流模型,结合自由水面处理技术的VOF方法,采用不同的壁面函数法、不同的计算区域网格划分精度和不同的进出口边界条件处理方法,成功地模拟了竖井进流水平旋转泄洪洞的水力特性,并对不同紊流模型和不同数值模拟条件与方法的计算结果与模型实验的结果进行了对比分析。分析结果表明,采用Realizablek-ε紊流模型能更好地模拟这种具有高紊动、强剪切和强旋转,并带有自由表面的竖井进流水平旋转空腔环流的水力特性。Through the selection of turbulence models of 3 different types in combining with the VOF method, the hydraulic characteristic of the level swirling flow of inner energy dissipation discharge tunnel with shaft inlet is successfully simulated using the different wall surface functions and the different mesh precisions of enumerative regions and the different processing methods of inlet and outlet boundary conditions. Also, the comparative analysis is made of the calculated results by the different turbulence models and different numerical simulation methods with those by the model tests. The analytical results indicate that the adoption of Realizable k-ε turbulence model is able to better simulate the hydraulic characteristic with high turbulence, strong shear, strong rotary and the horizontal rotary cavity flow in internal dissipating tunnel with an inlet shaft.

关 键 词：竖井进流 水平旋转 水力特性 数值模拟 空腔环流 

分 类 号：TV651.3[水利工程—水利水电工程]