NUMERICAL STUDY ON WIND TURBINE WAKES: PARAMETERS ANALYSIS

Accurate prediction of wind turbine wake are crucial for planning and oprating wind farm. Turbine wake velocity is especially important, which decides the total power generation. Using numerical methods, turbine wake velocity can be simulated with relatively high accuracy and low cost. Combining actuator disc model and computational fluid dynamics techniques, numerical methods show good agreement with the experiment results. Further investigation shows the effect of different parts of turbine on the turbine wake velocity. Comparison between different cases show that full model considering the rotation of rotor, nacelle and tower will give accurate simulation of turbine wake velocity. Simplificated turbine models can also yield relatively accurate results with less computational resources.