Numerical Studies of Three and Four HAWT Array Using LES and IDDES

The use of wind farms has been growing significantly in the past decades. However, harvesting the wind energy, from wind turbine farms poses significant challenges associated with the complex fluid dynamics such as wind turbine wake flow, wind-tower interactions, blade-wake interactions, etc. The present studies concern the aerodynamics and aeroacoustics studies of HAWT arranged in a 3 and 4 four array configuration. The computational studies are performed using the large-eddy simulation (LES) and improved delayed detached eddy simulation (IDDES) approach. The simulations were performed for a Reynolds number, Re = 1.2 × 10⁵, based on the NACA0012 airfoil chord and free-stream velocity. The results show that the LES and IDDES approaches capture very well the flow physics associated with the wind turbine.