On ice accretion for wind turbines and influence of some parameters

Abstract

The aim of this chapter is to find out the influence of the ice accretion on the wind turbine blade performance, to reveal how different icing variables affect ice accre- tion and to estimate the heat amount required to de-ice the blades at different icing eventsAlso different computational model simulations of ice accretion and the different de-icing technologies existing today are describedAll the simulations of icing events are performed with a software called LEWINT, developed by NASA Glenn Research Centre, USAThe study emphasises the conditions that are most severe for ice accretionHowever, the chapter is theoretical, so experiments are needed to validate and complement the conclusions reached in this chapterIt is pointed out that it is important to find the conditions for which ice accretion is formed and the heat amount required to avoid it, to design suitable blades for regions where ice accretion is formed regularly and develop suitable de-icing systems�