Pingkan Sihassaleh, Retno Wulandari, Redyarsa Dharma Bintara
Utilization free water flow can be used one of the fluid machines is water turbines. The purpose of this study was to determine the optimum performance and efficiency in variations of the water turbine geometry model. The research method used a quasi-experimental method with a Design of Experiment made on Minitab 18.0 using the Taguchi Orthogonal Array L9 method. Experimental variations were carried out 9 times. The turbine was designed using Inventor 18 software of 6 blades with variations fins 13, 15, and 17. The simulation was using Ansys (CFX) software in three stages, pre-processing, solving, and post-processing. In the pre-processing stage, geometry is generated, determining and naming boundary conditions for meshing and setting up. Set up process in the control solver uses k-epsilon and root mean square (RMS) residual criterion. The solving stage for the running process uses local parallel and double-precision settings. Post-processing stage, tangential speed, and torque results are obtained. Simulation results show the highest tangential speed of 6.45 m/s and the highest torque of 40.53 Nm. The calculation of water turbine performance shows the highest turbine power of 142.71 Watt. Final result of Taguchi method among others response Means (M) from highest to lowest, namely velocity (M = 24,587), number of fins (M = 10,210), and turbine depth (M = 2,047). © 2023 American Institute of Physics Inc.. All rights reserved.
Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia