The Effect of Circular Cylinder Diameter Installed The Side of Advancing Blade to Performance of Savonius Water Turbine Performance by means of Myring Blade formula for n=1 Priyo Agus Setiawan, Rini Indarti, Nopem Ariwiyono, Triyogi Yuwono, and Wawan Aries Widodo
Politeknik Perkapalan Negeri Surabaya
Abstract
This study will analyze the performance of savonius water turbines by using blades with the Myring equation n = 1 and adding a circular cylinder on the side of advancing which is simulated in flowing tank with a height of 800 mm and width of 1100 mm with a current speed of 0.22 m/s. The diameter variation of the circular cylinder used is ds/D = 0.2, 0.3, and 0.4. The numerical analysis uses 2D analysis and CFD method in ANSYS-Fluent software. The results obtained from these variations in torque coefficient values and power coefficient. The results of this study indicate that modifying the myring equation n of 1 and adding a circular cylinder on the side of the advancing can improve the performance of the Savonius. Savonius water turbine test results on variations of myring n = 1 with cylinder diameter ds/D = 0.4 get the highest power coefficient.
