马山抽水蓄能电站竖井式进/出水口轴对称流场数值模拟

Axi-symmetric numerical simulation of the vertical pipe inlet/outlet of Mashan pumped storage palnt

竖井式抽水蓄能电站竖井式进 出口概化为轴对称模型,采用雷诺应力模型(RSM )和VOF法,对抽水工况出流工况下竖井扩散段,孔口及防涡梁下的水流流动特性进行了数值模拟。数值计算结果的合理性得到了模型试验结果的验证,表明轴对称模型接近三维模型的模拟精度,有助于设计阶段体型优化。最后对抽水工况和发电工况下的流场和能量场的特性了初步探讨。

Vertical pipe inlet/outlet of Mashan pumped storage plant is simplified as an axi-symmetric model and flow field is simulated with second-moment Reynolds stress model and VOF.Numerical result describes the flow characteristics of diffuser pipe and lockage gate etc.Model test shows that the method is reliable,and the numerical accuracy of model is approximate to 3-D numerical model,which is helpful for structure optimization.At last,velocity field and energy field of inlet/outlet is discussed.