Numerical simulation on the aerodynamic performance of aerofoil for wind turbine blade

摘要

By applying the theory of aerodynamics and structural mechanics, and aimed on flow around the aerofoil of the wind turbine, the 2-D compressed turbulent flow model is established. The numerical simulation on the aerodynamic performance of an airfoil for wind turbine blade is finished. According to the turbulent flow viscosity based on the RANS, the relation between lift coefficient and drag coefficient of the aerofoil and the angle change of attack is found. And the distribution laws of pressure and velocity is also gained when Reynolds number is 3 X 10'. The results show the lift component is best when the angle of attack is 6°-14°. There will be lesser separation eddy when the angle of attack is small. However, vortex of end part extends along with the rise of angle of attack, and strong separation eddy will appear. When the angle of attack is big enough, separation eddy of end part accrete the aerofoil surface. The simulation results could provide reference on the research of aerofoil for wind turbine.