Abstract
Wind turbines are currently a rapidly expanding form of renewable energy. However, there are numerous technological challenges that must be overcome before wind energy provides a significant amount of power in the United States. One of the primary challenges in wind turbine design and analysis is accurately accounting for the wake. This study represents a step towards including wake effects in wind turbine design and analysis codes. A free wake model is developed using a time-marching vortex line method, and subsequently coupled with FAST, an open source wind turbine aeroelastic code. The resulting model is verified and validated against existing results. Subsequently, comparisons are made in power predictions and aeroelastic responses between the developed free wake model and typical wind turbine aerodynamic modeling approaches such as Blade Element Momentum theory and dynamic inflow. Results indicate that the free wake model has an impact on the power, blade loads, and blade deflections.
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