• D.Dominic Xavier
• R.Sarath Kumar
• S.Sabapathy

Savonius wind turbine is the simplest type of vertical axis rotor that has a relatively low Efficiency, but can operate throughout the year even with wind speed as low as 4 to 5 m/s. Operation of the Savonius wind turbine is based on the difference of the drag force on its semi-cylindrical blades, depending on whether the wind is striking the convex or the concave part of the blades. This turbine is being used in various countries around the world due to the simplistic design, ordinary workmanship for construction, and has a good starting torque along with independency towards wind direction at low wind speeds. The main goal of this current research is to investigate the aerodynamic performance of Savonius wind turbine. The numerical study conducted in this paper aims to investigate the effect of number of blades on the performance of the model of Savonius type wind turbine. Numerical investigation on 2, 3, and 4 blades wind turbines has been carried out using ANSYS FLUENT 15.0 to show torque and power coefficient related with wind speed on different tip speed ratios. The results of study showed that number of blades influence the performance of wind turbine. Savonius model with three blades has the best performance at Tip speed ratio 1.0 when compared to other blades. Moreover, significant improvement was observed in the torque and power coefficients on all the three blades as the free-stream velocity increases.

"Computational Analysis on Savonious Vertical Axis Wind Turbine to enhance the performance", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 3, page no.1095-1100, March-2018, Available :http://www.jetir.org/papers/JETIR1803208.pdf

"Computational Analysis on Savonious Vertical Axis Wind Turbine to enhance the performance", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 3, page no. pp1095-1100, March-2018, Available at : http://www.jetir.org/papers/JETIR1803208.pdf