Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (S1): 31-42.

• 论文 • 上一篇    下一篇

Investigation of horizontal-axis wind turbine (HAWT) blade threedimensional rotational effect based on field experiments

Deshun LI1,2,3, Rennian LI1,2,3, YinranLI1,2,3, Xiuyong WANG1,2,3, Liejiang WEI1,2,3, Yan QIANG1,2,3, Zhiqiang LIU1,2,3   

  1. 1. School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
    2. Gansu Provincial Technology Centre for Wind Turbines, Lanzhou 730050, China;
    3. Key Laboratory of Fluid Machinery and Systems, Lanzhou 730050, China
  • 收稿日期:2016-04-20 修回日期:2016-07-06 出版日期:2016-12-24 发布日期:2016-12-24
  • 通讯作者: Rennian LI E-mail:lirn@lut.cn
  • 基金资助:

    Project supported by the National Basic Research Program of China (973 Program) (No. 2014CB046201), the National Natural Science Foundation of China (Nos. 51166009 and 51566011), the National High Technology Research and Development Program of China (No. 2012AA052900), and the Natural Science Foundation of Gansu Province (Nos. 1308RJZA283 and 145RJZA059)

Investigation of horizontal-axis wind turbine (HAWT) blade threedimensional rotational effect based on field experiments

Deshun LI1,2,3, Rennian LI1,2,3, YinranLI1,2,3, Xiuyong WANG1,2,3, Liejiang WEI1,2,3, Yan QIANG1,2,3, Zhiqiang LIU1,2,3   

  1. 1. School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
    2. Gansu Provincial Technology Centre for Wind Turbines, Lanzhou 730050, China;
    3. Key Laboratory of Fluid Machinery and Systems, Lanzhou 730050, China
  • Received:2016-04-20 Revised:2016-07-06 Online:2016-12-24 Published:2016-12-24
  • Contact: Rennian LI E-mail:lirn@lut.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (973 Program) (No. 2014CB046201), the National Natural Science Foundation of China (Nos. 51166009 and 51566011), the National High Technology Research and Development Program of China (No. 2012AA052900), and the Natural Science Foundation of Gansu Province (Nos. 1308RJZA283 and 145RJZA059)

摘要:

Field experiments are performed on a two-bladed 33 kW horizontal-axis wind turbine (HAWT). The pressures are measured with 191 pressure sensors positioned around the surfaces of seven spanwise section airfoils on one of the two blades. Three-dimensional (3D) and two-dimensional (2D) numerical simulations are performed, respectively, on the rotor and the seven airfoils of the blade. The results are compared with the experimental results of the pressure distribution on the seven airfoils and the lift coefficients. The 3D rotational effect on the blade aerodynamic characteristics is then studied with a numerical approach. Finally, some conclusions are drawn as follows. From the tip to the root of the blade, the experimental differential pressure of the blade section airfoil increases at first and then decreases gradually. The calculated 3D result of the pressure distribution on the blade surface is closer to that of the experiment than the 2D result. The 3D rotational effect has a significant impact on the blade surface flow and the aerodynamic load, leading to an increase of the differential pressure on the airfoils and their lift coefficient than that with the 2D one because of the stall delay. The influence of the 3D rotational effect on the wind turbine blade especially takes place on the sections with flow separation.

关键词: horizontal-axis wind turbine (HAWT), three-dimensional (3D) rotational effect, numerical simulation, field experiment

Abstract:

Field experiments are performed on a two-bladed 33 kW horizontal-axis wind turbine (HAWT). The pressures are measured with 191 pressure sensors positioned around the surfaces of seven spanwise section airfoils on one of the two blades. Three-dimensional (3D) and two-dimensional (2D) numerical simulations are performed, respectively, on the rotor and the seven airfoils of the blade. The results are compared with the experimental results of the pressure distribution on the seven airfoils and the lift coefficients. The 3D rotational effect on the blade aerodynamic characteristics is then studied with a numerical approach. Finally, some conclusions are drawn as follows. From the tip to the root of the blade, the experimental differential pressure of the blade section airfoil increases at first and then decreases gradually. The calculated 3D result of the pressure distribution on the blade surface is closer to that of the experiment than the 2D result. The 3D rotational effect has a significant impact on the blade surface flow and the aerodynamic load, leading to an increase of the differential pressure on the airfoils and their lift coefficient than that with the 2D one because of the stall delay. The influence of the 3D rotational effect on the wind turbine blade especially takes place on the sections with flow separation.

Key words: horizontal-axis wind turbine (HAWT), three-dimensional (3D) rotational effect, numerical simulation, field experiment

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