This paper conducted a research on the aerodynamic characteristics of megawatt wind turbine's 3D model using the Computational Fluid Dynamics(CFD) method. A 1.5 MW wind turbine's 3D model was proposed as an example. For the blades including three airfoils, the improved Wilson's method was used for aerodynamic design. The blades were optimized by finding the best Reynolds number of various sections. By using FLUENT software, a 3D model of the whole turbine was established. Flow field was designed and divided...