ABSTRACT
This paper concerns the experimental verification of a new airfoil family for wind turbines. The family consists of airfoils in the relative thickness range from 15% to 30%. Three airfoils, Risø-A1-18, Risø-A1-21, and Risø-A1-24 were tested in a wind tunnel. The verification consisted of both static and dynamic measurements. Here, the static results are presented for a Reynolds number of 1.6×106 for the following airfoil configurations: smooth surface (all three airfoils) and Risø-A1-24 mounted with leading edge roughness, vortex generators, and Gurney-flaps, respectively. All three airfoils have constant lift curve slope and almost constant drag coefficient until the maximum lift coefficient of about 1.4 is reached. The experimental results are compared with corresponding computational results from the general purpose flow solver, EllipSys2D, showing good agreement.
