Studi Numerik Pengaruh Sudut Deflektor ? = 45° Di Depan Returning Blade Terhadap Performa Turbin Angin Savonius Myring n=1 Pada Kecepatan Angin 6 m/s

Abstract

Savonius-type wind turbines typically exhibit low efficiency due to high aerodynamic drag on the returning blade, so that performance improvements are needed. Based on the condition, this study investigates the effect of deflector angle variations placed in front of the returning blade to the performance of a Myring-type Savonius wind turbine (n=1). It used a numerical approach through Computational Fluid Dynamics (CFD) simulations. The deflector angles tested were 0°, 30°, 45°, and 60°, with wind speeds of 5 m/s, 6 m/s, and 7 m/s. The turbine had a height and diameter of 40 cm, while the deflector measured was 40 cm in height and 50 cm in width. The simulation result showed that a deflector angle of 45° at a wind speed of 6 m/s provided the best performance. The value of Coefficient of Torque (CT) was 0.2862 and the Coefficient of Power (CP) was 0.2283. The additional deflector angle effectively enhances turbine efficiency by mitigating reverse flow impact on the returning blade.

Keyword: Numerical, Angle Deflector ?=45°, Myring n = 1, Savonius Wind Turbine, Computational Fluid Dynamics