Airfoil Shape Optimization of a Horizontal Axis Wind Turbine Blade using a Discrete Adjoint Solver

In this study, airfoil shape optimization of a wind turbine blade is performed using the ANSYS Fluent Adjoint Solver. The aim process to increase output power, and objective function maximize lift drag ratio (Cl/CD ). This study applied NREL phase VI turbine, therefore, S809 used as reference profile. First, for validation numerical model, steady-state simulations are carried out at various angles attack. Then, with set fixed angle attack, , considering three Reynolds numbers, Re =3 105,4.8 105 106. Next, computations fluid flow around optimized airfoils attack AOA= 6.1° ranging from 0° 20°. results show that (i) ratios significantly improved compared baseline airfoil, (ii) improvement sensitive number, (iii) Cl/CD also another values. Thereafter, design Phase aerodynamic performances new assessed open-source code QBlade. These latter indicate when blades designed airfoils, significantly. Indeed, speed 10 m/s, power by about 38% original turbine.