Large Eddy Simulation of Wind Turbine Wake by using Actuator Line Model Part 1: wind turbine control and blade rotation effects

Abstract

The present study in part 1 is to develop a Large Eddy Simulation (LES) framework for wind turbine wake and power prediction by incorporating control algorithm and blade rotation. Firstly, the torque, pitch and yaw control is implemented in LES, and the predicted thrust force and power generation under varying wind speed and wind direction show good agreement with those calculated by the aeroelastic model FAST. Subsequently, three-dimensional flow field visualization and spectrum analysis are performed, and the results demonstrate that the blade rotation-induced aerodynamic effect is reproduced by using the Actuator Line Model (ALM).