Innovative Wind Flow Modifier Solutions for Improved Vertical Axis Wind Turbine Performance

Abstract

Wind power has become more important as the world moves toward using cleaner, more sustainable energy sources. However, optimizing VAWT performance under these circumstances is difficult. An innovative method to improve VAWT performance in low wind profiles is the use of wind flow modifiers (WFMs). The effectiveness of a C-shaped rotor with a low aspect ratio is simulated. In addition, a series of tubes with progressively smaller inside diameters are stacked from wind input to outflow in the WFM model. Its efficacy in increasing wind speed is tested using an involute turbine. The maximum power coefficients for the drag force rotor and the lift force involute rotor are 0.071 and 0.22, respectively. Further, the maximum power coefficient of the suggested WFM with an involute rotor is significantly increased to a noticeable value of 0.397 at 5 m/s wind speed, which allows for effective design in the low wind profile region.