Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine

Wind energy is one of the renewable resources which clean and sustainable wind turbine used for harnessing from wind. The blades are key components a to convert into rotational energy. Recently, wingtip devices in horizontal axis (HAWT), decreases vortex drag, while increases lift thereby improve performance turbine. In present study, winglet at tip an NREL phase VI blade. Solidworks, Pointwise, Ansys-Fluent geometric modeling, computational grid generation, CFD simulation, respectively. result obtained using SST k-? turbulence modeling well validated with experimental data 5 7 m/s speeds. Numerical investigation stall characteristics carried out wingleted blade higher intensity (21% 25%) angle attack (0 0 30 intervals) speed. found that wingletd delay 15 both cases intensity. Increasing coefficient but drag also thus lower aerodynamic (C L /C D ratio = 13) obtained. Wingleted improves as vortices smaller compared baseline