Geometrical Design of a Rotor Blade for a Small Scale Horizontal Axis Wind Turbine
R Supreeth1, A Arokkiaswamy2, Nagarjun J Raikar3, Prajwal H P4, Sudhanva M5
1R Supreeth*, Research Scholar, Department of Aeronautical Engineering, Dayananda Sagar College of Engineering, Assistant Professor, Department of Aerospace Engineering, Rashtreeya Vidyalaya College of Engineering, Bengaluru, India.
2A Arokkiaswamy, Department of Aeronautical Engineering, Dayananda Sagar College of Engineering, Bengaluru, India.
3Nagarjun J Raikar, Department of Aerospace Engineering, Rashtreeya Vidyalaya College of Engineering, Bengaluru, India.
4Prajwal H P, Department of Aerospace Engineering, Rashtreeya Vidyalaya College of Engineering, Bengaluru, India.
5Sudhanva M, Department of Aerospace Engineering, Rashtreeya Vidyalaya College of Engineering, Bengaluru, India.
Manuscript received on 6 August 2019. | Revised Manuscript received on 11 August 2019. | Manuscript published on 30 September 2019. | PP: 3390-3400 | Volume-8 Issue-3 September 2019 | Retrieval Number: C5036098319/2019©BEIESP | DOI: 10.35940/ijrte.C5036.098319
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In the present study, Blade Element Momentum theory (BEMT) has been implemented to heuristically design a rotor blade for a 2kW Fixed Pitch Fixed Speed (FPFS) Small Scale Horizontal Axis Wind Turbine (SSHAWT). Critical geometrical properties viz. Sectional Chord ci and Twist distribution θTi for the idealized, optimized and linearized blades are analytically determined for various operating conditions. Results obtained from BEM theory demonstrate that the average sectional chord ci and twist distribution θTi of the idealized blade are 20.42% and 14.08% more in comparison with optimized blade. Additionally, the employment of linearization technique further reduced the sectional chord ci and twist distribution θTi of the idealized blade by 17.9% and 14% respectively, thus achieving a viable blade bounded by the limits of economic and manufacturing constraints. Finally, the study also reveals that the iteratively reducing blade geometry has an influential effect on the solidity of the blade that in turn affects the performance of the wind turbine.
Keywords: Blade Element Momentum Theory, Chord Distribution, Renewable Energy, Solidity, Twist Distribution, Wind Energy.
Scope of the Article: Renewable Energy Technology