本文基于N -S方程和标准的k -ε紊流模型 ,采用贴体座标和交错网格系统 ,用SIMPLEC算法的水轮机通流部件内部的流动[1] 进行数值模拟 ,提出了基于周期边界条件的性质 ,把它纳入计算域的处理办法 ,并与传统的办法进行比较 ,结果表明 :此处理方法更接近真实流动 ,并且可以用于水轮机转轮内部的流动分析中 ,可以适用于别的紊流模型中 Based on the N-S equation and the standard k-ε turbulence model, the body coordinates and the staggered grid system are used to simulate the flow inside the turbine flow through the SIMPLEC algorithm [1] The nature of the condition and its inclusion in the computational domain approach and compared with the traditional approach, the results show that: This approach is closer to the real flow and can be used for flow analysis inside the runner of the turbine can be applied to other Turbulence model