潮流能水轮机翼型几何参数对其水动力学性能影响研究
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摘要
为研究潮流能水轮机翼型几何参数对其水动力学性能的影响规律,从Profili软件内置的翼型数据库中选择NACA4412翼型作为初始翼型,并利用Profili的翼型几何修形功能分别修改初始翼型的最大相对厚度、最大相对弯度、最大相对厚度所在的弦向位置和最大相对弯度所在的弦向位置等几何参数,得到几组新翼型。在Fluent软件中对初始翼型和新翼型进行二维翼型绕流数值计算并比较数值计算结果,研究几何参数对潮流能水轮机翼型升力系数、阻力系数、最大升阻比、高升阻比范围以及失速特性等水动力学性能的影响规律,为潮流能水轮机翼型的选取和潮流能水轮机专用翼型的设计奠定基础。
In order to investigate the influence of the geometric parameters of tidal energy turbine hydrofoils on its hydrodynamic performance,NACA 4412 hydrofoil is chosen as the original hydrofoil from the built-in database of the Profili software,and some new hydrofoils are got by using Profili's modifying function to modify the geometric parameters of original hydrofoil,such as the maximum relative thickness,the maximum relative camber,the chordwise position where the maximum relative thickness is located and the chordwise position where the maximum relative camber is located. The two-dimensional numerical calculation of the hydrofoil flow around the initial hydrofoil and the new hydrofoil is performed in Fluent software and the numerical results are compared. The influence of geometric parameters on the hydrodynamic performance of tidal energy turbine hydrofoil,such as lift coefficient,drag coefficient,maximum lift-to-drag ratio,high lift-to-drag ratio range and stall characteristics is studied,which lays the foundation for the selection of tidal energy turbine hydrofoil and the design of tidal energy turbine-specific hydrofoil.
In order to investigate the influence of the geometric parameters of tidal energy turbine hydrofoils on its hydrodynamic performance,NACA 4412 hydrofoil is chosen as the original hydrofoil from the built-in database of the Profili software,and some new hydrofoils are got by using Profili's modifying function to modify the geometric parameters of original hydrofoil,such as the maximum relative thickness,the maximum relative camber,the chordwise position where the maximum relative thickness is located and the chordwise position where the maximum relative camber is located. The two-dimensional numerical calculation of the hydrofoil flow around the initial hydrofoil and the new hydrofoil is performed in Fluent software and the numerical results are compared. The influence of geometric parameters on the hydrodynamic performance of tidal energy turbine hydrofoil,such as lift coefficient,drag coefficient,maximum lift-to-drag ratio,high lift-to-drag ratio range and stall characteristics is studied,which lays the foundation for the selection of tidal energy turbine hydrofoil and the design of tidal energy turbine-specific hydrofoil.
引文
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[2]Kang Tae-Ji,Park Warn-Gyu.Numerical investigation of active control for an S809 wind turbine airfoil[J].International Journal of Precision Engineering and Manufacturing,2013,14(6):1037-1041.
[3]Timmer W A,Van Rooij A.Summary of the Delft University wind turbine dedicated airfoils[J].Journal of Solar Energy Engineering,2003,125:488-496.
[4]Bjork A.Coordinates and Calculations for the FFA-W1-xxx,FFA-W2-xxx,FFA-W3-xxx Series of Airfoils for HAWTS[R].FFA TN 15,1990.
[5]王军,盛杰,施璐,等.风力机翼型同相对厚度条件下的气动性能模拟分析[J].水电能源科学,2011,29(3):185-187.[5]Wang Jun,Sheng Jie,Shi Lu,et al.Analysis of aerodynamic performance of wind turbine airfoil under the same relative thickness[J].Water Resources and Power,2011,29(3):185-187.
[6]王菲,吕剑虹,王刚.翼型厚度对风力机叶片翼型气动特性的影响[J].流体机械,2011,39(12):5-9.[6]Wang Fei,Lyu Jianhong,Wang Gang.Effects of airfoil thickness on airfoil aerodynamic characteristics[J].Fluid Machinery,2011,39(12):5-9.
[7]Goundar J N,Ahmed M R,Lee Young-Ho.Numerical and experimental studies on hydrofoils for marine current turbines[J].Renewable Energy,2012,42:173-179.
[8]Bahaj A S,Molland A F,Chaplin J R.Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank[J].Renewable Energy,2007,32(3):407-426.
[9]马舜,李伟,刘宏伟,等.水平轴潮流能发电系统能量捕获机构研究[J].机械工程学报,2010,46(18):150-156.[9]Ma Shun,Li Wei,Liu Hongwei,et al.Research on the energy capture of horizontal axis tidal current energy conversion systems[J].Journal of Mechanical Engineering,2010,46(18):150-156.
[10]王俭超.水平轴潮流能水轮机叶片设计和模型试验研究[D].青岛:中国海洋大学,2011.[10]Wang Jianchao.The blade design and experimental study on horizontal axis turbine driven by tidal current energy[D].Qingdao:Ocean University of China,2011.
[11]黎作武,陈江,陈宝,等.风力机组叶片的先进翼型族设计[J].空气动力学学报,2012,30(1):131-136.[11]Li Zuowu,Chen Jiang,Chen Bao,et al.Design of advanced airfoil families for wind turbines[J].Acta Aerodynamica Sinica,2012,30(1):131-136.
[12]刘丽娜,吴国新.Profili与Fluent环境下风力机翼型气动性模拟设计[J].北京信息科技大学学报,2014,29(1):68-70.[12]Liu Lina,Wu Guoxin.Wind turbine airfoil aerodynamic simulation design based on Profili&Fluent[J].Journal of Beijing Information Science and Technology University,2014,29(1):68-70.
[13]李仁年,张士昂,杨瑞,等.风力机的翼型弯度对风力机翼型气动性能的影响[J].流体机械,2009,37(5):17-21.[13]Li Rennian,Zhang Shi’ang,Yang Rui,et al.Effect of aerofoil camber on airfoil aerodynamic performance[J].Fluid Machinery,2009,37(5):17-21.[14]马林静,陈江,杜刚,等.风力机翼型气动特性数值模拟[J].太阳能学报,2010,31(2):203-209.
[14]Ma Linjing Chen Jiang,Du Gang,et al.Numerical simulation of aerodynamic performance for wind turbine airfoils[J].Acta Energiae Solaris Sinica,2010,31(2):203-209.
[15]江帆,黄鹏.Fluent高级应用与实例分析[M].北京:清华大学出版社,2008,8-15.[15]Jiang Fan,Huang Peng.Fluent advanced analysis application and instance analysis[M].Beijing:Tsinghua University Press,2008,8-15.