Bionic Design of Wind Turbine Blade Based on Long-Eared Owl’s Airfoil

Figure 15

Lift coefficients () and drag coefficients () of the airfoils at different AOA. “Standard-” is the lift coefficient of the standard airfoil, and “Standard-” is the drag coefficient of the standard airfoil. “Bionic-” is the lift coefficient of the bionic airfoil, and “Bionic-” is the drag coefficient of the bionic airfoil.

(a) Re = 6 × 10⁴

(b) Re = 8 × 10⁴