多级能量回收透平水力模型方案的开发  

Development of hydraulic model scheme of multistage energy recovery hydraulic turbine

作　　者：齐学义[1] 李凤成[1] 谢小梅[2] 刘永明[1] 

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]金川集团公司,甘肃金昌737100

出　　处：《兰州理工大学学报》2011年第4期56-60,共5页Journal of Lanzhou University of Technology

摘　　要：通过对九级能量回收水力透平的全流道三维定常湍流计算,确定能量回收水力透平水力模型的设计方案.计算以连续性方程、雷诺时均N-S方程作为其控制方程,采用标准k-ε双方程湍流模型使方程组封闭.流速、压力的求解采用SIMPLE算法实现,离散采用具有二阶精度的隐式格式差分.计算结果详细地显示出透平内全流道的流速和压力分布,验证了设计方法的科学性.Through numerical calculation of three-dimensional stationary turbulent flow in entire flow channel of nine-stage energy recovery turbine（ERT）,its hydraulic model design scheme was determined.Calculation took the continuity equation and Reynolds time-averaged N-S equation as its control equations.Turbulent model with standard k-ε double equation was used to make equations closed.Velocity and pressure were found out with SIMPLE scheme,variables discretization was implemented with implicit difference format of second-order accuracy.The result of calculation exhibited the velocity and pressure distribution in detail,so that the design method was verified is scientific.

关 键 词：能量回收 透平 三维 全流道 湍流 数值计算 

分 类 号：TK05[动力工程及工程热物理]