稳定流和不稳定流中Wells透平的流动特性  

The flow characteristics of Wells turbine in steady and unsteady flows

作　　者：伍儒康 吴必军[1,2,3] 王文胜 WU Rukang;WU Bijun;WANG Wensheng(Chinese Academy of Sciences Guangzhou Institute of Energy Conversion,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China;Chinese Academy of Sciences Key Laboratory of Renewable Energy,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;Collage of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640 [3]中国科学院可再生能源重点实验室,广东广州510640 [4]中国科学院大学,北京100049 [5]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2019年第7期1224-1229,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51579231);广东省科技发展专项资金项目(2017A010104012);广东省海洋与渔业发展专项资金项目(A201701B08)

摘　　要：为了研究不稳定流对Wells透平内部流动的影响,本文通过实验、数值计算方法研究了NACA翼型和优化翼型Wells透平在稳定流、不稳定流中的流动特性。实验结果表明:不同流动中,优化翼型都提高了透平的最高转换效率,拓宽了正常运行流量系数范围;不稳定气流中,Wells透平的平均输出力矩高于同样进口速度条件下的准稳态分析结果,不稳流中的输出扭矩能够达到准稳态分析结果的1.23~1.26倍。不稳定流对优化翼型输出扭矩的提升效果低于NACA翼型。To study the effect of unsteady flow on the internal flow of Wells turbine,the experimental method and numerical calculation method were used to investigate the flow characteristics of the NACA airfoil and the optimized airfoil of Wells turbine under steady and unsteady flows.The experimental results show that the optimized airfoil always increased the maximum conversion efficiency of the turbine and broadened the range of normal operating flow coefficients in different flows.The average output torque of the Wells turbine under unsteady flow was higher than that under quasi-steady state at the same inlet speed.According to the analysis,the average output torque in unsteady flow can be 1.23 to 1.26 times that in quasi-steady flow.The improvement effects of unsteady flow to the optimized airfoil is worse than that of the NACA airfoil.

关 键 词：波浪能 转换效率 不稳定流动 数值计算 透平 振荡水柱 Wells透平 

分 类 号：O355[理学—流体力学] TK79[理学—力学]