  The present research aims to enhance the efficiency of a DTU-10MW Horizontal
Axis Wind Turbine (HAWT) via Active Flow Control (AFC) implementation and using
Synthetic Jets (SJ). In the initial part of the study the flow around two
airfoil sections cut along the wing turbine blade and for a wind speed of 10m/s
is simulated using CFD-2D-RANS-K{\omega}-SST turbulence model, in order to
obtain the time averaged boundary layer separation point and the associated
vortex shedding frequency. This information is used, on a second stage of the
paper, to set, in one of these two airfoils where the boundary layer is having
an early separation, two of the AFC parameters while optimizing the remaining
three. The optimization is performed employing a parametric analysis and
demonstrates that a considerable WT power increase can be obtained when
managing to reattach the former separated boundary layer. This is further
clarified thanks to the energy assessment presented in the final part of the
paper. Although the AFC optimization needs to be extended for the rest of the
blade sections, the procedure outlined in the present research clarifies the
different steps to be followed to optimize the performance of any HAWT under
any operating conditions. The Reynolds numbers associated to the respective
airfoil sections analyzed in the present manuscript are Re = 14.088 e6 and Re =
14.877 e6, the characteristic length being the corresponding chord length for
each airfoil.
