偏航工况下水平轴风力机气动性能数值分析
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摘要
基于计算流体力学方法(CFD),通过求解URANS方程与SST湍流模型,对Tj?reborg 2 MW风力机风轮在偏航角0°、10°、30°工况下的气动特性进行计算,结果表明数值计算的功率与实验值吻合较好。分析不同偏航角下风轮的功率、推力、叶片各截面切向力、法向力载荷和压力分布的变化规律。偏航工况下一个旋转周期内风轮功率、推力呈现3P波动性质,叶片气动载荷沿旋转方向呈现正弦交变性质,最大载荷发生在方位角90°附近区域。
The aerodynamic characteristics of the Tj?reborg 2 MW wind turbine rotor were researched under yaw angles of 0°,10°,30° based on computational fluid dynamics method(CFD)by solving the URANS equations with the SST turbulence model. Numerical results of power agree well with the experimental values. Under yaw conditions,wind wheel power and thrust behave 3 P properties in one rotational period. The azimuthal variation of aerodynamic loads is characterized by alternating properties of approximate sine curve with the maximum value occurred in region near azimuth angle of 90°.
The aerodynamic characteristics of the Tj?reborg 2 MW wind turbine rotor were researched under yaw angles of 0°,10°,30° based on computational fluid dynamics method(CFD)by solving the URANS equations with the SST turbulence model. Numerical results of power agree well with the experimental values. Under yaw conditions,wind wheel power and thrust behave 3 P properties in one rotational period. The azimuthal variation of aerodynamic loads is characterized by alternating properties of approximate sine curve with the maximum value occurred in region near azimuth angle of 90°.
引文
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[11]姚世刚,戴丽萍,康顺.风力机叶片气动性能及流固耦合分析[J].工程热物理学报,2016,37(5):988-992.[11]Yao Shigang,Dai Liping,Kang Shun.Aerodynamic performance and fluid-structure coupling analysis of wind turbine blades[J].Journal of Engineering Thermophysics,2016,37(5):988-992.
[12]ángel J,Antonio C,Emilio M.Application of a LEStechnique to characterize the wake deflection of a wind turbine in yaw[J].Wind Energy,2009(13):559-572.
[13]Li Yuwei,Paik K-J,Xing Tao,et al.Dynamic overset CFD simulations of wind turbine aerodynamics[J].Renewable Energy,2012,37:285-298.
[2]Jeong Min-Soo,Kim Sang-Woo,Lee In,et al.The impact of yaw error on aeroelastic characteristics of a horizontal axis wind turbine blade[J].Renewable Energy,2013,60:256-268.
[3]徐浩然,杨华,朱卫军,等.偏航工况下水平轴风力机叶片气动变形数值模拟研究[J].可再生能源,2013,31(5):51-55.[3]Xu Haoran,Yang Hua,Zhu Weijun,et al.Numerical study on horizontal wind turbine blades deflections under yaw conditions[J].Renewable Energy Resources,2013,31(5):51-55.
[4]Noura B,Dobrev I,Dizene R,et al.Experimental study of yawed inflow around wind turbine rotor[J].Journal of Power and Energy,2012,226(5):664-673.
[5]Ozbay A.An experimental investigation on wind turbine aeromechanics and wake interferences among multiple wind turbines[D].Iowa:Iowa State University,2014.
[6]Verelst D R S,Larsen T J,Van Wingerden J W.Wind tunnel tests of a free yawing downwind wind turbine[A].Journal of Physics:Conference Series(Volume 753),The Science of Making Torque from Wind[C].Oldenburg(Oldb),Germany,2012.
[7]Hand M M,Simms D A,Fingersh L J,et al.Unsteady aerodynamics experiment phase VI:Wind tunnel test configurations and available data campaigns[R].NREL/TP-500-29955,2001.
[8]Tongchitpakdee C,Benjanirat S,Sankar L.Numerical simulation of the aerodynamics of horizontal axis wind turbines under yawed flow conditions[J].Journal of Solar Energy Engineering,2005,127(4):464-474.
[9]Yu Dong Ok,You Ju Yeol,Kwon Oh Joon.Numerical investigation of unsteady aerodynamics of a horizontalaxis wind turbine under yawed flow conditions[J].Wind Energy,2013,16:711-727.
[10]陈晓明,康顺,左薇.基于FlowVision的水平轴风力机偏航气动性能研究[J].工程热物理学报,2014,35(9):1758-1761.[10]Chen Xiaoming,Kang Shun,Zuo Wei.Research of yaw aerodynamic characteristic of horizontal-axis wind turbine based on FlowVision[J].Journal of Engineering Thermophysics,2014,35(9):1758-1761.
[11]姚世刚,戴丽萍,康顺.风力机叶片气动性能及流固耦合分析[J].工程热物理学报,2016,37(5):988-992.[11]Yao Shigang,Dai Liping,Kang Shun.Aerodynamic performance and fluid-structure coupling analysis of wind turbine blades[J].Journal of Engineering Thermophysics,2016,37(5):988-992.
[12]ángel J,Antonio C,Emilio M.Application of a LEStechnique to characterize the wake deflection of a wind turbine in yaw[J].Wind Energy,2009(13):559-572.
[13]Li Yuwei,Paik K-J,Xing Tao,et al.Dynamic overset CFD simulations of wind turbine aerodynamics[J].Renewable Energy,2012,37:285-298.