Numerical Simulation And Analysis Of Aerodynamic Performance For 1.5MW Wind Turbine Blades

The blade is one of the most important parts for wind turbine.Based on better designed blade,higher power coefficient is obtained and better economic profit can be gained. According to the aerodynamics ,1.5mw wind turbine blades A and B were designed by a profile and two different profiles in this paper, aerodynamic characteristics of two different 2-D profiles at the different attack angles and two different 3-D wind turbine blades at different wind speeds in static and rotating have been studied in present dissertation by CFD . Compare with blades A and B, It predicted that designing method was used in the blade B is feasible. The main contents and conclusions are as following:Firstly, the 2-D numerical simulation method was employed to study the dynamic stall of NACA63-430 and NACA4412 airfoils with the same Reynolds and the other operation conditions .The aerodynamic characteristic curves of two different profiles were gained. As a result, they were indentical to the experiment data .Secondly, Based on the similar theory and the variety coordinates of points, two wind turbine blades A and B were designed by UG software. In the course of blade designing, The relative blade section chord and setting angle of blades A and B were equality.also, numerical simulation of 3-D wind turbine blades A and B at different wind speeds in static and rotating at the same operations including same grid design, computing zone and model. Except that the mesh count on the half of blade B were more heavier.Finally, Simulation result shows that the aerodynamic characteristic of blade B was superior to blade A whatever in static or rotating. It proves that designing method was used in the blade B is feasible. and provides a new designing way to the wind turbine blade.