论文部分内容阅读
通过混流式模型水轮机全流道的三维非定常紊流计算 ,预测了引水部件和尾水管的压力脉动。计算以N -S方程为基础 ,基于贴体坐标和交错网格划分 ,对控制方程进行变换和离散 ,采用SIMPLEC算法求解 ,应用了RNG的k -ε湍流模型。
Through the three-dimensional unsteady turbulent calculation of the full runner of the Francis turbine, the pressure pulsation of the diversion components and the draft tube is predicted. The calculation is based on the N-S equation. Based on the body-fitted coordinates and the staggered grid, the control equations are transformed and discretized. The SIMPLEC algorithm is used to solve the problem. The k-ε turbulence model of RNG is applied.