叶轮参数对垂直轴风机风能利用系数的影响分析
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摘要
为研究垂直轴风力发电机风能利用系数的影响因素,在动量叶素理论基础上建立了双盘多流管模型,并通过数学建模方法来重点研究弦长、叶轮半径、叶片数对风机的影响。由于风轮在旋转过程中受力复杂,在原有理论基础上提出了四象限分析方法,将风轮旋转平面分成四个象限进行受力分析,在分析受力之后进行建模仿真。最后,针对NACA0018翼型,分别研究在不同弦长、叶轮半径、叶片数下,垂直轴风力发电机风能利用系数的变化情况,从而为风机叶轮参数的选用提供了参考依据。
In order to have a better research on the effect factors of the vertical axis wind turbine wind-energy utilization coefficient,based on the multi-blade element momentum theory a Double Disk Multi-tube Model was established,and through mathematical modeling method to focus on the influence of chord length,radius and number of blades. Because of the loading on the wind turbine during rotation was complex,the rotation plane was divided into four quadrants,and put forward the fourquadrant analysis method on the basis of the original theory,then established the simulation model based on the analysis of stress. Finally,in view of the NACA0018 airfoil,study respectively in different chord length,impeller radius and number of blades using the four-quadrant analysis method,the change of vertical axis wind turbine wind-energy utilization coefficient,which provides a reference for the selection of fan impeller parameters.
In order to have a better research on the effect factors of the vertical axis wind turbine wind-energy utilization coefficient,based on the multi-blade element momentum theory a Double Disk Multi-tube Model was established,and through mathematical modeling method to focus on the influence of chord length,radius and number of blades. Because of the loading on the wind turbine during rotation was complex,the rotation plane was divided into four quadrants,and put forward the fourquadrant analysis method on the basis of the original theory,then established the simulation model based on the analysis of stress. Finally,in view of the NACA0018 airfoil,study respectively in different chord length,impeller radius and number of blades using the four-quadrant analysis method,the change of vertical axis wind turbine wind-energy utilization coefficient,which provides a reference for the selection of fan impeller parameters.
引文
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[2]尚彬彬.垂直轴风力发电机叶片结构设计[D].哈尔滨:哈尔滨工业大学,2012:9-12.SHANG Bin Bin.Structural design for the blade of vertical axis wind turbine[D].Harbin:Harbin Institute of Technology,2012:9-12(In Chinese).
[3]孙亮.垂直轴风力机的气动及结构强度一体化设计研究[D].哈尔滨:哈尔滨工业大学,2010:9-13.SUN Liang.Aerodynamic and structure analysis of vertical axis wind turbine[D].Harbin:Harbin Institute of Technology,2010:9-13(In Chinese).
[4]顾煜炯,王兵兵,李佳佳,等.一种修正的多流管模型在垂直轴风力机气动性能分析中的应用[J].太阳能学报,2015,1:004.GU Yu Jiong,WANG Bing Bing,LI Jia Jia,et al.A kind of modified stream tube model in the application of the vertical axis wind turbine aerodynamic performance analysis[J].Acta Energiae Solaris Sinica,2015,1:004(In Chinese).
[5]徐轶.5 k W H型垂直轴风力发电机叶片结构优化设计[D].南京:南京航空航天大学,2012:6-14.XU Yi.Structure optimization design of 5 KW H type vertical axis wind composite turbine blade[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2012:6-14(In Chinese).
[6]杨从新,巫发明,王立鹏,等.设计参数对直叶片垂直轴风力机功率系数的影响[J].兰州理工大学学报,2009,35(5):47-50.YANG Cong Xin,WU Fa Ming,WANG Li Peng,et al.Effect of design parameters on power coefficient of a straight-bladed verticalaxis wind turbine[J].Journal of Lanzhou University of Technology,2009,35(5):47-50(In Chinese).
[7]Brahimi M T,Allet A,Paraschivoiu I.Aerodynamic analysis models for vertical-axis wind turbines[J].International Journal of Rotating Machinery,1995,2(1):15-21.
[8]Claessens M C.The design and testing of airfoils for application in small vertical axis wind turbines[J].Master of Science Thesis,2006.
[9]Burton T.风能技术[M].北京:科学出版社,2014:52-56.Burton T.Wind technology[M].Beijing:Science Press,2014:52-56(In Chinese).
[10]Paraschivoiu I.Double-multiple streamtube model for Darrieus in turbines[C].Lewis Research Center Wind Turbine Dynamics,1981:19-25.
[11]韩非非,席德科,任栋.用多流管模型预测达里厄型垂直轴风力机性能[J].太阳能学报,2011,32(9):1309-1314.HAN Fei Fei,XI De Ke,REN Dong.The Performance prediction of darrieus vertical-axis wind turbine by using multiply stream-tubes model[J].Acta Energiae Solaris Sinica,2011,32(9):1309-1314(In Chinese).
[12]张立勋,梁迎彬,李二肖,等.实度对直叶片垂直轴风力机风轮气动性能的影响分析[J].农业机械学报,2013,5:029.ZHANG Li Xun,LIANG Ying Bin,LI Er Xiao,et al.Effects analysis of solidity on aerodynamic performance of straight-bladed vertical axis wind turbine[J].Transactions of the Chinese Society for Agricultural Machinery,2013,5:029(In Chinese).