非对称翼型反装对H型垂直轴风力机流场分布的影响  

Effect of concave-out's asymmetric airfoil on flow field of H-type vertical axis wind turbine

作　　者：李寿图 杨从新[1,2,3] 史广泰 张旭耀 LI Shoutu;YANG Congxin;SHI Guangtai;ZHANG Xuyao(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050,China;Gansu Provincial Technology Centre for Wind Turbines,Lanzbou,Gansu 730050,China;Key Laboratory of Fluid Machinery and System,Gansu Pro vince,Lanzbou,Gansu 730050,China;College of Energy and Power Engineering,Xibua University,Cbengdu,Sicbuan 610039 China)

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]甘肃省风力机工程技术研究中心,甘肃兰州730050 [3]甘肃省流体机械及系统重点实验室,甘肃兰州730050 [4]西华大学能源与动力工程学院,四川成都610039

出　　处：《排灌机械工程学报》2018年第2期141-145,共5页Journal of Drainage and Irrigation Machinery Engineering

基　　金：甘肃省青年科技基金计划项目(1508RJYA098);国家自然科学基金资助项目(11262011)

摘　　要：H型垂直轴风力机(H-VAWT)是典型的升力型垂直轴风力机,且有集群式发展的潜力和优势.文中采用数值模拟的研究方法,建立二维模型,对比分析了使用非对称翼型的H-VAWT叶片反装时的流场结构,以及反装时叶片数对H-VAWT流场分布的影响.结果表明:对于非对称翼型的H-VAWT,叶片反装所产生的尾流湍流强度较叶片正装时大,且尾流的恢复能力差,进而影响到H-VAWT在风场中的布局,但是叶片的正装和反装对H-VAWT附近外流场中Y方向上流场分布的影响基本一致;随着叶片数的增加,反装叶片的H-VAWT本身产生尾流的湍流强度增加,这增强了下风轮区域叶片和上风轮区域叶片所产生湍流的相互作用,但是叶片数为3时,叶片的正装和反装所产生的湍流差别不大.The H-type vertical axis wind turbine（ H-VAWT） is a classic lift-driven vertical axis wind turbine,and it has cluster developing potential and advantages. The research method of numerical simulation was adopted and the two-dimensional model was established,flow field structure of H-VAWT of the concave-out＇s asymmetric airfoils was analyzed,as well as the flow field distribution was analyzed when the blade numbers of H-VAWT of the concave-out＇s asymmetric airfoils change. The results show that the wake turbulence of H-VAWT of the concaver-out＇s asymmetric airfoils is more intense than that of the concaver-in＇s asymmetric airfoils,and the recovery capability of wake is weaker,thus influencing the distribution of H-VAWT in the wind field. But for the regardless of the concave-out and con-cave-in,the distribution of flow field is basically the same that of out flow field near the turbine. With increasing of blade number,the wake turbulence intensity resulting from H-VAWT of the concave-out＇s asymmetric airfoils increases. But for the regardless of the concave-out and concave-in,the turbulence produced is basically the same when blade number is 3.

关 键 词：垂直轴风力机 叶片安装方式 尾流场 数值模拟 叶片数 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程] S277.9[农业科学—农业水土工程]