Isolated Rotor The predicted surface pressure coefficients are compared

1999 European Wind Energy Conference, 1-5 March 1999, Nice, France pp85-88

Ris0-Al-18 has the smoothest stall of the three airfoils. For Ris0-Al-21 and Ris0-Al-24 the experimental and computational results, respectively, look very much alike both showing a more abrupt stall.