SIMULASI TURBIN ANGIN SUMBU HORIZONTAL DENGAN VARIASI AIRFOIL SERTA ANALISIS KARAKTERISTIK AERODINAMIKA MENGGUNAKAN APLIKASI Q-BLADE

The wind speed in Indonesia is only about 3 m/s – 11 m/s, it is quite difficult to generate electricity on a large scale. This also makes the utilization of wind energy still very low, but the potential of wind in Indonesia is available almost all year round so there is the possibility of developing technology to utilize wind energy. Modifications of wind turbines need to be made that are adapted to low wind speed conditions. Therefore, a Horizontal Axis Wind Turbine type wind turbine was designed using a NACA airfoil which has a high Cl/Cd value to generate power in low-speed winds. The research was conducted in 2 stages. The first step is the calculation to determine the radius and chord. The two initial design stages of the blade are carried out in a simulation using QBlade software to determine the NACA airfoil used and determine the performance coefficient and the resulting power. The design results produce HAWT blades with NACA 4412, NACA 4712 and NACA 6412 taperless airfoils with a blade radius of 1 m and a chord width of 0.12 m. From the results of the analysis of the three airfoils, NACA 4412 is the best geometry from the other geometries because it has the highest Cp value of 0.43 or 43% with the resulting power of 574.71 Watts.