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.
作者
李寿图
杨从新
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)
出处
《排灌机械工程学报》
EI
CSCD
北大核心
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)
