scholarly journals Experimental study of surface curvature effects on aerodynamic performance of a low Reynolds number airfoil for use in small wind turbines

2016 ◽  
Vol 8 (5) ◽  
pp. 053303 ◽  
Author(s):  
Xiang Shen ◽  
Eldad Avital ◽  
Gordon Paul ◽  
Mohammad Amin Rezaienia ◽  
Pihua Wen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Reynolds Number ◽  
Wind Turbines ◽  
Low Reynolds Number ◽  
Aerodynamic Performance ◽  
Surface Curvature ◽  
Curvature Effects ◽  
Small Wind Turbines ◽  
Low Reynolds ◽  
Low Reynolds Number Airfoil

scholarly journals Surface curvature effects on the tonal noise performance of a low Reynolds number aerofoil

2017 ◽  
Vol 125 ◽  
pp. 34-40 ◽  
Author(s):  
Xiang Shen ◽  
Eldad Avital ◽  
Qinghe Zhao ◽  
Junhui Gao ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Surface Curvature ◽  
Noise Performance ◽  
Tonal Noise ◽  
Curvature Effects ◽  
Low Reynolds

Design of a low Reynolds number airfoil for small horizontal axis wind turbines

2012 ◽  
Vol 42 ◽  
pp. 66-76 ◽  
Author(s):  
Ronit K. Singh ◽  
M. Rafiuddin Ahmed ◽  
Mohammad Asid Zullah ◽  
Young-Ho Lee
Keyword(s):  
Reynolds Number ◽  
Wind Turbines ◽  
Low Reynolds Number ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbines ◽  
Low Reynolds ◽  
Low Reynolds Number Airfoil

Computational Analysis of a High-Lift and Low Reynolds Number Airfoil at Turbulent Atmospheric Conditions

2009 ◽  
Author(s):  
Mazharul Islam ◽  
M. Ruhul Amin ◽  
Yasir M. Shariff
Keyword(s):  
Reynolds Number ◽  
Wind Turbines ◽  
Turbulence Intensity ◽  
Computational Analysis ◽  
Low Reynolds Number ◽  
Experimental Results ◽  
High Lift ◽  
Wide Range ◽  
Low Reynolds ◽  
Low Reynolds Number Airfoil

Selection of airfoil is crucial for better aerodynamic performance and design of aerodynamic applications such as wind turbine and aircrafts. In this paper, a high-lift and low-Reynolds number airfoil has been selected and investigated through computational analysis for applying it for small-sized wind turbines as blades. The S1223 airfoil, designed by the University of Illinois at Urbana-Champaign, was chosen for its high-lift characteristics at low Reynolds number typically encountered by the small wind turbines. CFD work is performed with S1223 airfoil profile over a wide range of conditions of interest to analyze the performance of the airfoil using the Spalart-Allmaras turbulence model. The results obtained from the simulation works have been compared with experimental data for validation purpose. It has been found that the Spalart-Allmaras model conforms well with the experimental results, though the values of lift coefficients (Cl) are slightly less than the experimental results. In the present analysis, velocity distributions are analyzed at different angle of attacks for different turbulence intensities. It has been observed that there is vortex shedding around the trailing edge of the airfoil for both turbulence levels. It has been observed in the present study that due to increase in turbulence intensity, both the maximum lift coefficient and the stall angle increases significantly. It has been found after investigating the effect of turbulence intensity over lift-to-drag coefficient ratio that it drastically decreases due to increase in turbulence intensity up to certain value (about 3.5%), then it starts decreasing in gradual manner.

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