Boundary layer stability impact on wind power

Abstract

Turbulence calculation is important in terms of the amount of energy the turbines will produce and the resistance of the turbines to extreme loads. Turbulence is the deviations of regular flow. Friction faced by flow and chaotic changes in velocity and pressure cause turbulence. There are many theorems and methods used for turbulence calculation. Some of these are K-theory (Eddy Diffusivity) and Power Law Expression. Calculation of turbulence is of great importance in order to improve wind forecasts. Thus, the amount of energy obtained from the wind can be calculated with higher accuracy and the regions where the wind energy farm will be established can be determined more precisely. Along with this study, wind turbulence calculation was carried out by wind data obtained from MILRES (National Wind Power Plant) turbine in Terkos, Istanbul region at different heights. In the light of these data, the distribution of energy output, wind speed, and wind direction was calculated both mathematically and by simulation. Based on the National Wind Power Plant (MILRES) turbine data, turbulence calculation was performed using Eddy Diffusivity and Power Law Expression methods. The results obtained were compared and the atmospheric stability of the region was examined using these results. During the considering period, each month was examined separately and the relationship between seasonal anomalies and turbulence was observed. Daily, monthly and seasonal deviations and changes were determined.