Journal cover Journal topic
Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
https://doi.org/10.5194/wes-2016-50
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research articles
22 Dec 2016
Review status
This discussion paper is a preprint. It has been under review for the journal Wind Energy Science (WES). A final paper in WES is not foreseen.
Methodology for the engineering calculation of flaps on Wind Turbines using BEM codes
Maria Aparicio-Sanchez, Alvaro Gonzalez-Salcedp, Sugoi Gomez-Iradi, and Xabier Munduate CENER, Sarriguren, Navarra, 31621, Spain
Abstract. Aeroelastic codes based on Blade Element Momentum theory are the standard used by many wind turbine designers. These codes usually include models and corrections for unsteady aerodynamics, tip and root effect, tower shadow and other effects. In general, this kind of codes does not include models to adequately simulate aerodynamic control devices. This paper presents a method to take into account the unsteady contributions due to the flap motion (based on indicial models) and the spanwise effects (based on circulation theory), in order to simulate flaps on the blades. This method can be included in BEM codes in general and it could also be applied to another kind of control devices. The validation and verification show the accuracy of this method using experimental data for two-dimensional unsteady cases, and CFD for three-dimensional steady and unsteady cases.

Citation: Aparicio-Sanchez, M., Gonzalez-Salcedp, A., Gomez-Iradi, S., and Munduate, X.: Methodology for the engineering calculation of flaps on Wind Turbines using BEM codes, Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2016-50, 2016.
Maria Aparicio-Sanchez et al.
Maria Aparicio-Sanchez et al.

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Short summary
The use of the flaps is one of the options to reduce the equivalent loads or to increase the power in large wind turbines. This paper presents a methodology to simulate the performance of the blades with these aerodynamic devices. This method presents important advantages with respect to CFD in terms of computational effort and leads to similar results.
The use of the flaps is one of the options to reduce the equivalent loads or to increase the...
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