摘要
依据给定的参数,对水力透平机进行模型设计。采用FLUENT软件对所设计的水力透平机进行了全流道三维定常湍流数值模拟,计算以雷诺时均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算法实现速度、压力变量的分离求解。定常湍流计算采用了标准k-ε湍流模型。模拟计算获得了水力透平各过流部件内部的流动机理,该数值计算方法和结果对水力透平机的水力优化设计具有重要意义。
According to the given parameter, design hydraulic turbine model. By using FLUENT software to simulate 3 - d steady turbulent flow through the whole flow passage of hydraulic turbine model, numerical simulation based on Reynolds - averaged Navier - Stokes equations and finite coordinates and staggered grids, to control equation transformation and discrete. Adopt SIMPLEC algorithm to realize speed and pressure separation of variables solution. Steady turbulent, flow calculation adopt standard k - ε turbulence model. Simulation obtained under different operation conditions of hydraulic turbine every internal flow components of flow mechanism. The numerical calculation method and results have great significant for the hydraulic optimization design of turbine.
出处
《流体机械》
CSCD
北大核心
2012年第1期22-25,共4页
Fluid Machinery
基金
国家自然科学基金项目(51079066)
关键词
水力透平机
CFD技术
全流道
数值模拟
hydraulic turbine
CFD technology
whole flow passage
numerical simulation