The Effect of Savonius Geometry on the Performance of The Combination of Cylinder and Savonius Blades on Wind Turbines and Propulsion Systems

• Main Author: Al Mujtahid, Ahmad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43802
• Institution: Institut Teknologi Bandung

The average growth rate of Indonesia’s energy needs predicted to reach 5,3% per year, from 2016?2050. As of now, most of Indonesia’s energy supply comes from fossil fuel. In the mean time, Indonesia’s renewable energy has potential of 443.208 MW, and wind is one of them. This study is aimed to design a turbine that uses Magnus effect with a combination of cylinder and a Savonius blade. Simulations combining a cylinder and a Savonius blade were carried out with a variation of Savonius length to the total turbine length ratio, Savonius diameter to cylinder diameter ratio, as well as the number of Savonius blades, as opposed to power, lift, and drag coefficients. Modeling and simulation were done with CFD on the design of the combination of a cylinder and a Savonius blade. The results from the simulation showed as the three ratio increases, the values of power coefficient increases as well. Savonius length to the total turbine length ratio with the value of 0,6 is greater in power coefficient by 5.9% compared to the ratio of 0.5. The lift and drag coefficients increased by 11.7% and 4.3%. Moreover, the use of Savonius diameter to cylinder diameter ratio of 1.4 had the greatest power, lift, and drag coefficients compared to the other ratio values, and as for the number of Savonius blade use, the turbine with four blades would have maximum value of power, lift, and drag coefficients.