Design and Analysis of the Effect Through Different Aspect Ratio on Performance of VAWT

Abstract

This paper aims to analyze the effect of the aspect ratio, which is the ratio between the height of the blade to the radius of the rotor on the turbine’s performance. A vertical wind turbine is different from a traditional wind turbine; the axis of rotation of the blade for vertical axis wind turbine is in the vertical direction, as its name suggests, whereas a traditional wind turbine or horizontal wind turbine has an axis of rotation in a horizontal manner. Many researchers have found that the performance of VAWT is more efficient than HAWT. Their performance factors solely depend upon the design of the turbine and its blade for better drag coefficient, aerodynamicity, and aerofoil which generates more Reynolds numbers. Pressure found at inlet or outlet. So, we will conclude this study and see through the result. The model is designed using SOLIDWORKS and analyzed through flow simulation. The angle of the blade is taken as 22$^\circ$ (efficient). The model is tested at different aspect ratios, and the variation in torque generation has been studied. Inside SOLIDWORKS flow simulation, BEM analysis is performed. From the results, it can be concluded that for the angle of attack at 22$^\circ$, the optimum aspect ratio ranges in-between 1.30 and 1.35. Table 1 shows torque variation with the aspect ratio at that point pressure calculated for the blade; these are plotted with the help of Figs. 3, 4, 5, 6, 7, and 8 that shown and discussed below.