STUDI NUMERIK PENGARUH VARIASI PANJANG DEFLEKTOR DI DEPAN RETURNING BLADE TERHADAP PERFORMA TURBIN ANGIN SAVONIUS MYRING n=1

Abstract

The experiment on the Savonius wind turbine with Myring n=1, by adding a deflector in front of the returning blade, has been proven to improve its performance. However, one limitation of the experiment was the inability to visualize the airflow, such as velocity contours, streamline velocity, and pressure contours. Therefore, this study was conducted to provide a visualization of the airflow. This research uses a numerical analysis method with the aid of computational fluid dynamics (CFD)-based software in a 3D model. The study employs a Savonius wind turbine model with Myring n=1, having a diameter and height of 40 cm. The variations in deflector length used are 10 cm, 20 cm, 30 cm, and 40 cm. The simulation results showed a performance improvement of 17,8% compared to the Savonius wind turbine with Myring n=1 without a deflector, with the highest coefficient of power value occurring at a TSR of 0,8, reaching a value of 0,244