Gurney Flap Implementation on a DU91W250 Airfoil

Proceedings

Zulueta, Ekaitz¹  Saenz-Aguirre, Aitor²  Fernandez-Gamiz, Unai³  Aramendia, Iñigo⁴  Lopez-Guede, Jose Manuel⁵ 

[1] Author to whom correspondence should be addressed.;Automatic Control and System Engineering Department, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain;Mechanical Engineering Department, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain;Nuclear Engineering and Fluid Mechanics Department, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain;Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 September 2018

关键词: wind turbine;    flow control;    Gurney Flap;    aerodynamics;    optimization;   

DOI  :  10.3390/proceedings2231448

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The increasing capability of Wind Turbine (WT) based power generation systems has derived in an increment of the WT rotor diameter, i.e., longer rotor blades. This results in an increase of the electrical power generated but also in instabilities in the operation of the WT, especially due to the mechanical fatigue loads generated in its elements. In this context, flow control has appeared as a solution to improve the aerodynamic performance of the blades. These devices not only increase lift coefficient but also reduce mechanical fatigue loads. This paper presents a detailed numerical analysis of the effects of placing a passive flow control element, a Gurney Flap (GF), in a DU91W250 airfoil. Moreover, a numerical study of the influence of the GF length on the aerodynamic performance of the blade has been carried out. This study is considered as a basis for the development of an optimization technique of the GF length for long WT blades.

【 授权许可】

CC BY