STUDI NUMERIK PENGARUH VARIASI SUDUT DEFLEKTOR DI DEPAN RETURNING BLADE TURBIN ANGIN SAVONIUS MYRING n=1 KECEPATAN ANGIN 6m/s

Abstract

Many variation models are carried out to optimize the performance of the Savonius wind turbine. From the various variations that have been carried out, there are various ways to optimize the performance of the Savonius wind turbine. In this study, it was carried out by varying the angle of the deflector in front of the returning blade of the Savonius turbine. The experiment was carried out using a Myring Savonius wind turbine n = 1 with a height and diameter of 40 cm, with a deflector of 50 cm long and 40 cm high using a wind speed of 6 m / s. The variation of the angle of the deflector in front of the returning blade was 30o, 35o, 45o, 60o. The study was conducted using numerical simulations with the Computational Fluid Dynamic method. The study obtained the highest value of the Coefficient of Power (Cp) of 0.1807 at TSR 0.8 on a wind turbine without a deflector. The coefficient of power (CP) values show that adding a deflector in front of the returning blade at angles of 30°, 35°, 45°, and 60° reduces Savonius turbine performance by -45.7% at the 30° angle, -30.8% at the 35° angle, -24.8% at the 45° angle, and -22.8% at the 60° angle. This study concludes that adding a deflector in front of the returning blade can reduce Savonius wind turbine performance. This research contributes to the development of more efficient wind turbine designs and can serve as a reference for future studies in the field of renewable energy.