Investigations on blade tip tilting for hawt rotor blades using CFD

Date

2015-02-26

Author

Elfarra, Monier A.
Sezer Uzol, Nilay
Akmandor, I. Sinan

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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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-ε, k-ε Yang-Shih and SST k-ω 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.

Subject Keywords

CFD, HAWT, Tip tilting, Wind turbine, Winglet

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84919919071&origin=inward
https://hdl.handle.net/11511/96826

Journal

International Journal of Green Energy

DOI

https://doi.org/10.1080/15435075.2014.889007

Collections

Department of Aerospace Engineering, Article

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Citation Formats

M. A. Elfarra, N. Sezer Uzol, and I. S. Akmandor, “Investigations on blade tip tilting for hawt rotor blades using CFD,” International Journal of Green Energy, vol. 12, no. 2, pp. 125–138, 2015, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84919919071&origin=inward.