Abstract：Based on independently developed airfoil of H type vertical axis wind turbines(H-VAWT)as the research object, the aerodynamic performance and three-dimensional effect of H-VAWT at the low wind speed condition are analyzed using the numerical simulation methods.The results showed that at the low wind speed condition, the change of the wind speed or rotating speed have a significant influence on the performance of the H-VAWT while keeping the tip speed ratio constant. The tip speed ratio is more sensitive than rotational speed considering the effect of wind speed. For the low wind speed case, H-VAWT works in the low tip speed ratio area,even if the rotational speed is high. Setting reasonable wind speed and rotational speed is necessary in the numerical simulation. Without considering the wind shear, three-dimensional effect is influenced by the tip vortex. The tip vortex mainly located in 0° azimuth angle play an important role. The three-dimensional effect is also influenced by the flow field inside, and the effect increases while the rotational speed increases. Further research on H-VAWT can use these results as references.
杨从新, 李寿图, 王秀勇. 低风速下H型垂直轴风力机气动性能[J]. 排灌机械工程学报, 2014, 32(10): 888-893.
Yang Congxin, Li Shoutu, Wang Xiuyong. Aerodynamic performance of H type vertical axis wind turbine under condition of low wind speed. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(10): 888-893.
[1]科技部.《风力发电科技发展“十二五”专项规划》解读[EB/OL].(2012-05-04)[2013-12-18].http://www.most.gov.cn/fggw/zcjd/201205/t20120504_94138.htm.[2]Islam M, Ting D S K, Fartaj A. Desirable airfoil features for small-capacity straight-bladed VAWT[J]. Wind Engineering, 2007,31(3):165-196.[3]Schuble P J, Crossley R J. Wind turbine blade design[J]. Energies,2012,5(9):3425-3449.[4]Ferreira C S, Van Kuik G, Van Bussel G, et al. Visua-lization by PIV of dynamic stall on a vertical axis wind turbine[J]. Experiments in Fluids,2009, 46(1): 97-108.[5]Zanon A, Giannattasio P, Ferreira C S. A vortex panel model for the simulation of the wake flow past a vertical axis wind turbine in dynamic stall[J]. Wind Energy, 2013, 16(5):661-680.[6]杨从新, 巫发明, 张玉良. 基于滑移网格的垂直轴风力机非定常数值模拟[J]. 农业机械学报, 2009, 40(6):98-102. Yang Congxin, Wu Faming, Zhang Yuliang. Numerical simulation on unsteady rotated flow of a vertical axis wind turbine based on moving meshes[J].Transactions of the Chinese Society for Agricultural Machinery, 2009, 40(6): 98-102.(in Chinese)[7]李岩, 迟媛, 冯放,等. 垂直轴风力机叶片表面结冰的风洞试验[J]. 工程热物理学报, 2012, 33(11):1872-1875. Li Yan, Chi Yuan, Feng Fang, et al. Wind tunnel test on icing on bladed used for vertical axis wind turbine[J].Journal of Engineering Thermophysics, 2012,33(11): 1872-1875.(in Chinese)[8]李岩,田文强,冯放,等. 组合型垂直轴风力机结合角度对起动性的影响[J]. 农业机械学报,2012,43(12):102-106. Li Yan, Tian Wenqiang, Feng Fang, et al. Starting performance effects of combining angle on combined type VAWT[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(12):102-106.(in Chinese)[9]Li Chao,Zhu Songye,Xu Youlin,et al. 2.5 D large eddy simulation of vertical axis wind turbine in consideration of high angle of attack flow[J]. Renewable Energy, 2013, 51: 317-330.[10]赵振宙, 原红红,郑源, 等. 直叶片达里厄风轮流场非定常数值计算[J]. 排灌机械工程学报,2012,30(5):567-572. Zhao Zhenzhou, Yuan Honghong, Zheng Yuan, et al. Numerical simulation on unsteady flow field of straight bladed darrieus wind rotor[J]. Journal of Drainage and Irrigation Machinery Engineering, 2012,30(5):567-572.(in Chinese)[11]赵振宙,郑源,周大庆,等. 基于数值模拟Savonius风力机性能优化研究[J]. 太阳能学报,2010,31(7):907-911. Zhao Zhenzhou, Zheng Yuan, Zhou Daqing, et al. Optimization of the performance of savonius wind turbine based on numerical study[J]. Acta Energiae Solaris Sinica,2010,31(7):907-911.(in Chinese)[12]Liebeck R H. Design of subsonic airfoils for high lift[J]. Journal of Aircraft,1978,15(9): 547-561.[13]Howell R, Qin N, Edwards J,et al. Wind tunnel and numerical study of a small vertical axis wind turbine[J]. Renewable Energy,2010,35(2): 412-422.
