LAUSR

An anti-flutter optimization design of DU 98-W-210 airfoil for wind turbine blades is carried out by employing the particle swarm optimization algorithm. As is well known, the increase in the torsional blade stiffness, which is in proportion to the polar moment of inertia, will improve the anti-flutter ability of airfoil. Thus, maximizing the polar moment of inertia is selected as the design objective, within the aerodynamic performance constraints (i.e., the lift-to drag ratios in a wide range of AOAs (Angle of Attack) should not be lower than the original value). The commercially available software CFX is employed to calculate the flow field by solving the Reynolds-averaged Navier-Stokes equations coupled with the shear stress transport turbulence model. The results show a significant improvement in both the polar moment of inertia and the lift-to-drag ratios in a wide range of AOAs of the optimized airfoil compared to the original DU 98-W-210 airfoil.