基于脉冲动量理论的Savonius型水轮机性能预测  

PERFORMANCE PREDICTION OF SAVONIUS HYDRAULIC TURBINE BASED ON IMPULSE MOMENTUM THEORY

作　　者：吴晨 余杨[1,2] 余建星 李振眠[1,2] 高扬 徐立新 Wu Chen;Yu Yang;Yu Jianxing;Li Zhenmian;Gao Yang;Xu Lixin(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]天津市港口与海洋工程重点实验室,天津300072

出　　处：《太阳能学报》2021年第10期399-407,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51779173,51609169)。

摘　　要：以双叶片Savonius型水轮机为研究对象,使用CFD仿真模拟开展二维、三维模型下的水动力性能计算,并对结合滞点压力的脉冲动量理论进行改进优化,进而将数值结果与理论结果进行对比分析。结果显示,脉冲动量理论的推导过程过于理想化,与二维计算结果更加贴近,且在低叶尖速比下的适用情况更佳,仅具备有限的预测可靠性。Taking two-blade Savonius hydraulic turbine as research object,hydrodynamic performance of two-dimensional and threedimensional models was calculated through CFD simulation.And impulse momentum theory combined with stagnation pressure was improved and optimized.The theoretical results was compared with the above numerical results.The comparison shows that the derivation process of impulse momentum theory tends towards idealization,which is closer to the two-dimensional calculation results,and is better applied under low tip speed ratio.In other words,this theory has a certain reliability on performance prediction of Savonius hydraulic turbine.

关 键 词：海流能 水轮机 计算流体力学 误差分析 脉冲动量理论 滞点压力 

分 类 号：TK736[交通运输工程—轮机工程]