عنوان مقاله [English]
An extensive experimental investigation has been conducted to study the aerodynamic behavior of a wind turbine blade. A three
dimensional wing was fabricated using the existing wind turbine blade cross section. The wing was tested at angles of attack of -5 to 25 degrees and at various Reynolds numbers in the Shiraz subsonic wind tunnel. Experimental results, such as static pressure distribution, lift coefficient, wake and 3-D flow effects, are compared with the 2-D test results. The comparison shows that 3-D flow effects reduce both wing lift coefficient and blade performance, with respect to the 2-D results, while the stall angle increases considerably.