Performance Analysis of Savonius VAWT with and Without Dimples and Fins by Using CFD

In an energy-demanding world with a growing population, effective energy methods to increase the extraction of work from various renewable energy sources are always encouraged. The primary goal of this study is to improve the performance of the Savonius vertical axis wind turbine, which is commonly used in areas with low wind speed. Dimples are added to the blade profile, resulting in a more aerodynamic design that reduces drag on wind turbine blades. In addition, to save space and accelerate pressure along the blade width, fins are added. This influences the wind turbine's ability to generate more power. The Computational Fluid Dynamics (CFD) analysis is used to understand the performance of the Savonius VAWT with and without Dimples and Fins when subjected to low incoming wind velocity. In this study, wind turbine blade is tested over air velocity 5, 8, 10, and 12 m/s with the use of CFD analysis. Result shows the combination of Dimples and Fins on blade surface of Savonius VAWT performs better at the air velocity of 10 m/s to precipitate more torque and output power for the generation of electricity.