明渠水流三维数值模型研究

本文在具有无尺度铅垂坐标的直角坐标系中采用完全的三维雷诺方程组描述明渠中的水流运动,利用二维沿水深平均的连续方程确定自由表面形状。文中给出的隐式求解方法保持了经典SIMPLE算法的全部优点,并具有高的收敛速度。算例表明,计算结果与实测值十分一致。

A NUMERICAL MODEL FOR 3-D WATER FLOWS IN OPEN CHANNELS

A three dimensional numerical model based on the Reynolds Equations that can be used to predict the surface water flow in open channels is presented. The 2-D equation derived from integration of the continuity equation over the total depth is adopted to determine the shape of the free water surface. The implicit algorithm presented in the paper keeps all the advantages of the conventional SIMPLE procedure, and has high rate of convergence. The applications show that the computed results are in good agreement with the experimental ones.