Lift and drag coefficients behaviour at low Reynolds number in an airfoil with gurney flap submitted to a turbulent flow. Part 1.  / Grupo de Fluidodinámica ComputacionalCFC; Colman Lerner, Jorge.; Marañón di Leo, Julio.; Delnero, Juan Sebastián.; Martínez, M.; Boldes, Ulfilas.; Bacchi, Federico Alfredo.; Alfredo.