A New Method of Sectional Expression of Wind Turbine Airfoil Function

To expand the airfoil database and realize reverse digital design, this paper proposes a new sectional expression function of wind turbine based on Joukowski transformation derives equation for novel airfoil. Compared with existing function, can adjust parameter values to control relative thickness, thickness position, camber, camber position Taking common (NACA63-212) as an example, is fitted according expected direction. The maximum fitting deviation 1.22135×10-3, better than four methods shape fitting, which demonstrates well practicability accuracy method. It also shows that changing generate enrich database. Therefore, proposed method broadens ideas design research.