Investigation on the Effect of Blades Number and Wind Velocity on the Ventilator Wind Turbine

Ventilator turbine is a ventilation device that has a simple operating mechanism where its superiority is also supported by its fairly lightweight frame, thus making its performance high and stable in converting wind gusts into drag force. The advantage comes from the construction of turbines that are quite flexible; however, there is still room for further modifications to improve its performance. Based on a series of research modifications to improve performance, it was found that very little research has been done on the performance of curved blade ventilators based on the number of blades and wind velocities. This study aims to find the effects of the number of blades and wind velocities on the efficiency of curved blade ventilators by using Computational Fluid Dynamics (CFD) and surface response approaches. This study used a quasi-experimental study method. The stages in this study begin with a DOE (Design of Experiment) from which the results will be used for simulation on Ansys Fluent. The next stage of the analysis process uses Ansys. Through the use of simulations, the tangential speed and torque and the wind distribution flow on the turbine can be obtained. The results of this study show that the highest efficiency value was found in a variable with 36 blades and a wind speed of 5 m/s with an efficiency value of 88.3 %. In the use of surface response approaches, the optimum value was obtained with the use of 36 blades and 5 m/s wind speed with an efficiency of 82 %.