【摘要】 本文完成了混流式模型水轮机全流道的三维非定常湍流计算。以N S方程为基础 ,补充以湍流模型并通过有限体积对控制方程进行离散 ;数值求解采用SIMPLEC算法 ;分别对标准k ε湍流模型和重整化群 (RNG)k ε湍流模型进行了比较计算更多还原

【Abstract】 Numerical calculation of 3 D unsteady turbulent flow through the whole flow passage of a Francis turbine model is accomplished by solving the N S equations.Based on turbulent flow model,the control equation is discretized by finite volume method and SIMPLEC method is applied to solve the equations.The result attained by using standard k ε turbulent flow model and the result attained by using Renormalization Group(RNG) k ε turbulent flow model have been compared.更多还原