Energies 2013, 6(6), 2784-2803; doi:10.3390/en6062784
Article

The Performance Test of Three Different Horizontal Axis Wind Turbine (HAWT) Blade Shapes Using Experimental and Numerical Methods

1,2,* email, 1email and 3,4email
Received: 7 March 2013; in revised form: 20 May 2013 / Accepted: 22 May 2013 / Published: 5 June 2013
(This article belongs to the Special Issue Wind Turbines 2013)
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Abstract: Three different horizontal axis wind turbine (HAWT) blade geometries with the same diameter of 0.72 m using the same NACA4418 airfoil profile have been investigated both experimentally and numerically. The first is an optimum (OPT) blade shape, obtained using improved blade element momentum (BEM) theory. A detailed description of the blade geometry is also given. The second is an untapered and optimum twist (UOT) blade with the same twist distributions as the OPT blade. The third blade is untapered and untwisted (UUT). Wind tunnel experiments were used to measure the power coefficients of these blades, and the results indicate that both the OPT and UOT blades perform with the same maximum power coefficient, Cp = 0.428, but it is located at different tip speed ratio, λ = 4.92 for the OPT blade and λ = 4.32 for the UOT blade. The UUT blade has a maximum power coefficient of Cp = 0.210 at λ = 3.86. After the tests, numerical simulations were performed using a full three-dimensional computational fluid dynamics (CFD) method using the k-ω SST turbulence model. It has been found that CFD predictions reproduce the most accurate model power coefficients. The good agreement between the measured and computed power coefficients of the three models strongly suggest that accurate predictions of HAWT blade performance at full-scale conditions are also possible using the CFD method.
Keywords: horizontal axis wind turbine; blade element momentum theory; wind tunnel experiment; power coefficient; computational fluid dynamics
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Hsiao, F.-B.; Bai, C.-J.; Chong, W.-T. The Performance Test of Three Different Horizontal Axis Wind Turbine (HAWT) Blade Shapes Using Experimental and Numerical Methods. Energies 2013, 6, 2784-2803.

AMA Style

Hsiao F-B, Bai C-J, Chong W-T. The Performance Test of Three Different Horizontal Axis Wind Turbine (HAWT) Blade Shapes Using Experimental and Numerical Methods. Energies. 2013; 6(6):2784-2803.

Chicago/Turabian Style

Hsiao, Fei-Bin; Bai, Chi-Jeng; Chong, Wen-Tong. 2013. "The Performance Test of Three Different Horizontal Axis Wind Turbine (HAWT) Blade Shapes Using Experimental and Numerical Methods." Energies 6, no. 6: 2784-2803.


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