Effect of Blade Design on Angular Velocity of Vertical Axis Wind Turbine – CFD Analysis

Arun Prakash C., Ponsuganth Ilangovan P., Nitin Joy, Subramanian R.

Abstract


Application of Vertical Axis Wind Turbine (VAWT) for generation of power is gaining momentum. However no research has been done to increase the efficiency of blade design for bidirectional wind flow. In the present study the effect of blade profile and thickness for a Savonius wind turbine has been studied. Different blade profiles with thickness 2mm, 4mm and 6mm were modelled. A numerical analysis was done for a bi-directional wind input. The model for the rotor was designed on Solidworks 2017 and a numerical analysis was carried outon commercial CFD software, Ansys Fluent. From the analysis, the angular velocity graphs were plotted with respect to time and compared. The effect of the blade profiles and thickness were studied. And it was observed that 2mm blade with curved profile was most suitable for bidirectional wind flow as it gains stable velocity sooner which is an important factor for power generation.

Keywords


Vertical axis wind turbine; Blade design; Numerical analysis; Angular velocity; Bidirectional wind flow

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References


B.D. Altan and M. Atilgan, The use of a curtain design to increase the performance level of a Savonius wind rotors, Renewable Energy 35 (April 2010), 821 – 829.

S. Brusca, R. Lanzafame and M. Messina, Design of a vertical-axis wind turbine: how the aspect ratio affects the turbine’s performance, International Journal of Energy and Environmental Engineering 5 (December 2014), 333 – 340.

M.A. Kamoji, S.B. Kedare and S.V. Prabhu, Performance tests on helical Savonius rotors, Renewable Energy 34 (March 2009), 521 – 529.

N.H. Mahmoud, A.A. EL-Haroun, E. Wahba, M.H. Nasef, An experimental study on improvement of Savonius rotor performance, Alexandria Engineering Journal 51 (March 2012), 19 – 25.

V.J. Modi and M.S.U.K. Fernando, On the performance of the Savoniuswind turbine, Journal of Solar Energy Engineering 111 (February 1998), 71 – 81.

S. Sharma and R.K. Sharma, Performance improvement of Savonius rotor using multiple quarter blades – A CFD investigation, Energy Conversion and Management 127 (1 November 2016), 43 – 54.

S. Sharma and R.K. Sharma, CFD investigation to quantify the effect of layered multiple miniature blades on the performance of Savonius rotor, Energy Conversion and Management 144 (15 July 2017), 275 – 285.

A. Shigetomi, Y. Murai, Y. Tasaka and Y. Takeda, Interactive flow field around two Savonius turbines, Renewable Energy 36 (February 2011), 536 – 545.




DOI: http://dx.doi.org/10.26713%2Fjims.v10i1-2.1053

eISSN 0975-5748; pISSN 0974-875X