Abstract: This article simulated and analyzed the behavior of wind-mill generator aerofoil in the wind field by using of the physics environment method in the fluid- solid coupling module of the large finite element analysis software-ANSYS, and a calculation method on cL/cD of the airfoil was found through many attempts and selection, the method can give a result which relatively approaches the real value.

Key words: analysis software-ANSYS, physics environment method, wind-mill generator blade, cL/cD of airfoil