混流式模型水轮机全流道三维定常湍流计算  

3-D Steady Turbulent Flow Simulation through the Whole Flow Passage of the Model Francis Turbine

作　　者：刘宇[1] 吴伟章[2] 吴玉林[1] 陶星明[2] 刘树红[1] 张梁[1] 

机构地区：[1]清华大学,北京100084 [2]哈尔滨大电机研究所,哈尔滨150040

出　　处：《大电机技术》2003年第3期38-42,共5页Large Electric Machine and Hydraulic Turbine

摘　　要：本文完成了为岩滩水电站所设计的混流式水轮机模型的全流道三维定常湍流计算。计算程序以雷诺时均连续性、N -S方程作为控制方程 ,选用标准k-ε双方程湍流模型使方程组封闭。数值求解通过SIMPLEC算法实现速度、压力的分离求解 ,离散差分格式具有二阶精度。通过计算获得了各过流部件的流动细节 ,预估了水轮机的能量、空化性能 ,并与模型试验结果进行了比较。In the present paper, the three_dimensional steady turbulent flow is simulated through the whole flow passage of the model Francis turbine for Yan tan project. Based on Navier_Stokes equations and the standard k_ε model, the SIMPLEC algorithm with body_fitted coordination and staggering grid system is applied for the solution of the discretization governing equations. The detail of flow through the whole flow passage is attained. The energy and cavitation property of the model turbine is predicted.

关 键 词：混流式水轮机 湍流模型 k-ε双方程 全流道三维定常湍流 计算 

分 类 号：TK733.1[交通运输工程—轮机工程]