轴流式水轮机转轮内三维紊流场预测

Predication of the Three-Dimensional Turbulent Flow in an Axial-Flow Runner

转轮是水轮机中影响机组特性的一个重要部件．研究水轮机转轮内三维素流场的流动特性对于提高水轮机组的特性及效率具有重要的意义．本文基于N-S方程和标准的κ-ε紊流模型，采用SIMPLEC算法，数值模拟了轴流式水轮机转轮内的三维紊流场，同时讨论了其收效性和准确性．轴流式水轮机转轮内的三维紊流场数值模拟结果有助于提高轴流式水轮机的水力设计、性能分析和优化设计的水平．

Runner is an important element that influences the properties of the hydraulic machinery. Re-searching the 3D turbulent flowfield is significant to improve the properties of the unit- The 3D turbulent flow-field in an axial-flow runner is investigated by a numerical flow analysis. The SIMPLEC algorithm is used for the solution procedure of the discrete equations based on N-S equations and the standard K-e model. The con-vergence and the availability of the numerical results are discussed- The results are useful in improving the de-sign, property analysis and optimization levels of the hydraulic machinery.