三维紊流模型的开发及其在环境工程中的应用

Development of 3-D turbulence model and its applications in environmental engineering

本文针对复杂的三维弯道水流，研究开发了三维代数插值坐标变换法；应用雷诺平均Ｎ—Ｓ方程和Ｋ－ε紊流模型，及曲率校正模式，对大朝山水电站城门洞式大型导流洞三维紊流进行了数值模拟；在１：１００的整体导流模型上做了试验，测取了洞内各部位的沿程压力分布；并将计算结果与实测值进行了对比．

By using algebraic grid generation algorithm, the Reynolds averaged N-S equations and a standard K-ε turbulence model are solved in the present study on the fully 3-D turbulent flow through a diversion tunnel.A curvature correction model is adopted in the calculations,and a good agreement between the calculated and the test data is obtained.