Wind Tunnel Experiment on a Small Horizontal Axis Wind Turbine

2013 ◽  
Author(s):  
K. Sankaranarayanan ◽  
S. Krishnakumar ◽  
G. Victor PaulRaj ◽  
R. Rahul ◽  
S. Chitra Ganapathi
Keyword(s):  
Wind Tunnel ◽  
Wind Turbine ◽  
Wind Tunnel Experiment ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine

scholarly journals Influence of Turbulence Model for Wind Turbine Simulation in Low Reynolds Number

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Masami Suzuki
Keyword(s):  
Reynolds Number ◽  
Wind Tunnel ◽  
Wind Turbine ◽  
Turbulence Model ◽  
Turbulence Models ◽  
Leading Edge ◽  
Wind Tunnel Experiment ◽  
Speed Ratio ◽  
Horizontal Axis Wind Turbine ◽  
Developed Turbulence

In designing a wind turbine, the validation of the mathematical model’s result is normally carried out by comparison with wind tunnel experiment data. However, the Reynolds number of the wind tunnel experiment is low, and the flow does not match fully developed turbulence on the leading edge of a wind turbine blade. Therefore, the transition area from laminar to turbulent flow becomes wide under these conditions, and the separation point is difficult to predict using turbulence models. The prediction precision decreases dramatically when working with tip speed ratios less than the maximum power point. This study carries out a steadiness calculation with turbulence model and an unsteadiness calculation with laminar model for a three-blade horizontal axis wind turbine. The validation of the calculations is performed by comparing with experimental results. The power coefficients calculated without turbulence models are in agreement with the experimental data for a tip speed ratio greater than 5.

Field Experiment of Blade Surface Pressure of a HAWT

2013 ◽  
Vol 291-294 ◽  
pp. 445-449
Author(s):  
De Shun Li ◽  
Ren Nian Li
Keyword(s):  
Experimental Study ◽  
Numerical Calculation ◽  
Wind Tunnel ◽  
Field Experiment ◽  
Wind Turbine ◽  
Surface Pressure ◽  
Pressure Sensors ◽  
Horizontal Axis ◽  
Blade Surface ◽  
Horizontal Axis Wind Turbine

Field experimental study is performed on a 33 kW horizontal axis wind turbine with rotor diameter of 14.8 m. The distribution of pressure is gathered by disposed 191 taped pressure sensors span-ward on seven particular sections of a blade. The results will provide a comparative basis to wind tunnel experiment and numerical calculation of the flow of the wind turbine.

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