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Title: Investigations on Blade Tip Tilting for Hawt Rotor Blades Using CFD
Authors: Elfarra, Monier A.
Uzol, Nilay Sezer
Akmandor, I. Sinan
Keywords: Winglet
Wind turbine
Tip tilting
Issue Date: 2015
Publisher: Taylor & Francis Inc
Source: 10th International Conference on Clean Energy -- SEP 15-17, 2010 -- Famagusta, CYPRUS
Abstract: The main purpose of this paper is to study the aerodynamic effects of blade tip tilting on power production of horizontal-axis wind turbines by using Computational Fluid Dynamics (CFD). For validation and as a baseline rotor, the NREL Phase VI wind turbine rotor blade is used. The Reynolds-Averaged Navier-Stokes Equations are solved and different turbulence models including the Spalart-Allmaras, Standard k-epsilon, k-epsilon Yang-Shih and SST k-omega models are used and tested. The results are shown in terms of power generation at different wind speeds and the pressure distribution at different sections of the blade, and the comparisons are made with the available experimental data. For tip tilting analysis, 16 different geometries belonging to four different configurations are studied. The geometries are generated based on changing the twist and the cant angles of the winglet. The four different configurations are obtained from tilting the blade tip toward pressure side, suction side, leading edge, and trailing edge. The effect of the different configurations on the flow characteristics and hence on the power production of the wind turbine is investigated.
ISSN: 1543-5075
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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