BEM theory adaptation taking into account the wind speed vertical gradient for wind turbines of high class part 2 numerical analysis of the aerodynamic interaction

The article provides the realization of the proposed methodology in the publication "BEM theory adaptation taking into account the wind speed vertical gradient for wind turbines of high class. Part 1 – A theoretical formulation". A wind turbine prototype NREL 5MW is investigated. The comparison of the obtained results in the article with the prototype characteristics confirms the adequacy of the proposed modification of the method and at the same time shows new important effects of the aerodynamic interaction which are expressed in a cyclic impact on the wind turbine blades. This gives much more possibilities for the accurate study of the fatigue loads in the turbine’s blades and for the synthesis of an individual pitch control with an objective a greater power to be achieved and for adjusting of the mechanical loads.