Performance Optimization of Wind Turbine Rotots with Active Flow Control. Part 2: Active Aeroelastic simulations.

ASME IGTI Turbo Expo Proceedings June 2012
Authors: G. Weinzierl, George Pechlivanoglou, C.N. Nayeri, C.O. Paschereit

This paper presents the continuation of the research efforts of the authors in the direction of the development of ”smart blades” for the wind turbines of the future. Results from previous research work is further in combination with a newly developed simulation code in order to assess the performance of Active Flow Control (AFC) elements implemented on modern wind turbine blade structures. Parametric investigations have been conducted in order to identify the optimal configuration of various AFC elements. These are tested under identical bound-ary conditions to define an overall optimal solution. The results of the research project show that the Active Gurney Flap is the element with a highest probability for the fastest implementation on wind turbine blades for load alleviation purposes. The most promising however overall solution is the Flexible Trailing Edge Flap. With its high control authority and relatively high regulation speed is able to significantly vary the aerodynamic performance of wind turbines.