Numerical study of fluid flow characteristics across a lens wind turbine with vortex generators

Indonesia still needs the development of wind turbine technology to increase the utilization of wind potential. This research will design a wind farm using Lens Wind Turbine with the addition of a vortex generator on the brim surface (LWTvg). The purpose of this research is to produce Lens Wind Turbine (LWTvg) to achieve Green Economy. The vortex generators are put in brim surface with ratio variations z/h=4.5, z/h=2.5, and z/h=0.5. This research uses simulation method to analyze fluid characteristics. The simulation result shows that based on air velocity contour the LWTvg z/h=0.5 has higher air velocity when through the turbine than other variations. The fluid characteristics for air velocity, air pressure, and performance coefficient in top line and middle line are similar but the phenomena are different in bottom line. The number of vortex generators can intensify changes in wind flow velocity around the wind turbine.