风力机翼型后缘射流及功率载荷影响分析  

Analysis of wind turbine airfoil trailing edge jets and power loading effects

作　　者：聂伟 陆奇志[1] Nie Wei;Lu Qizhi(Xinjiang Vocational&Technical College of Communications,Urumqi,831401,Xinjiang,China)

机构地区：[1]新疆交通职业技术学院,新疆乌鲁木齐831401

出　　处：《新疆农机化》2024年第4期26-30,共5页Xinjiang Agricultural Mechanization

摘　　要：通过数值计算方法,对风力机翼型DU91-W2-250建立有限元模型,采用适合翼型仿真的SST k-ω湍流模型,研究原始翼型与添加后缘射流口翼型,得到不同攻角、不同射流速度下的升力系数、阻力系数并分析了其流场,最后通过动量-叶素理论计算射流翼型对功率和载荷的影响。结果表明:在0°~8°攻角范围内,升力系数和阻力系数上升呈现线性,升阻比保持不变,大于8°攻角阻力系数上升明显,射流不能改善翼型气动特性。添加射流翼型在8°攻角范围内可以增加翼型单位功率,但增加了叶片的载荷。The finite element model of DU91-W2-250 wind turbine airfoil was established by numerical calculation method,and the SST k-ω turbulence model suitable for airfoil simulation was used to study the original airfoil and the airfoil with added trailing-edge jet ports,the lift coefficient and drag coeficient were obtained and the flow field was analyzed for different angles of attack and different jet speed.Finally,the effect of airfoil shape on power and load is calculated by momentum-voxel theory.The results show that:In the range of 0° to 8° angle of attack,the lift coefficient and drag coefficient increase linearly,and the lift-to-drag ratio remains constant.The drag coeficient rises significantly for angle of attack greater than 8°,and the jet does not improve the aerodynamic characteristics of the airfoil.Add gas-jet airfoil within 8°angle of attack increases the unit power of airfoil,but the cost is to increase the load of the blade.

关 键 词：气体射流 流动控制 气动性能 叶片载荷 叶片功率 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]