Investigasi Perbandingan Numerik dan Eksperimental Turbin Savonius Bilah Konvensional dan Bilah Ellips

Abstract

The Savonius turbine is a type of vertical wind turbine with a simple design and is easy to manufacture. This turbine has two semicircular blades that rotate in opposite directions when exposed to wind. Savonius turbines have been proven effective in producing wind energy at low wind speeds. This research aims to compare the performance of Savonius turbines with conventional blades and elliptical blades numerically and experimentally with various variations in wind speed. Numerical simulations were carried out using Computational Fluid Dynamics (CFD) software to predict the performance of the Savonius turbine at various wind speeds. Experiments were carried out in the laboratory to validate the numerical simulation results. Savonius turbines with conventional and elliptical blades were manufactured and tested in wind tunnels with various wind speeds. Experimental results show that the elliptical blade produces higher torque and power than the conventional blade at all wind speeds, which agrees with the numerical simulation results. That is due to the more aerodynamic elliptical shape, which allows the turbine to capture more wind energy. In addition, Savonius turbines with elliptical blades have more stable torque compared to Savonius turbines with conventional blades. This research shows that the Savonius turbine with elliptical blades is a better choice for wind energy applications at low wind speeds. This turbine has better performance and more stable torque than the Savonius turbine with conventional blades.