大型泵站引水河道流场的数值模拟

Numerical simulation of flow field in diversion channel of large pumping station

应用正交曲线坐标系下的二维水深平均数学模型对大型泵站的引水河道流场进行了数值模拟 .采用Pois son变换生成正交网格 ,用四边形插值方法生成计算网格的底高程数据 ,并用SIMPLEC方法求解离散方程 .由该模型计算出的金口泵站引水河段的流场图及各断面垂线平均流速分布与物理模型试验的成果较为一致 .

The 2_D average water depth mathematical model in orthogonal curvilinear coordinate system is used for the numerical simulation of the flow field in the diversion channel of large pumping station. The orthogonal gird is generated by Poisson equation; the channel bottom elevation data of the gird points are given by quadrilateral interpolation method; and the equations are solved by SIMPLEC method. The simulated velocity field and the average vertical velocity of Jinkou pumping station diversion channel are in fair agreement with the measured results in model test.