Computational characterization of a Gurney flap on a DU91(2)W250 airfoil Unai Fernandez-Gamiz, Iñigo Errasti, Ekaitz Zulueta, José Manuel Lopez Guede and Ana Boyano MATEC Web Conf., 307 (2020) 01053 Published online: 10 February 2020 DOI: 10.1051/matecconf/202030701053