The dynamic response of a wind turbine has been considered here to study the differences between inflows from physics based codes and spectral techniques. In particular, inflows from Large Eddy Simulations (LES) of a nighttime stable and a neutrally stable Atmospheric Boundary Layers (ABL) are compared against those from TurbSim. Furthermore, turbine response has also been used to assess the low-order LES models. While the mean wind profiles from LES and TurbSim for both atmospheric boundary layers show a good agreement, the turbulent kinetic energy distributions could not be matched. Nonetheless, for both LES and TurbSim the turbine response was found to be mainly dictated by the mean wind profile. Due to their low frequencies, the effect of energetic turbulent structures was found to be negligible on the turbine that responds at higher frequencies. The assessment of the low-dimensional models proved that, based on the type of ABL, large LES datasets may be significantly compressed without compromising their ability to produce accurate turbine response.
展开▼
