Final Project Title The Design of Francis Turbine at 30 m Head and 500 kW Power Rating for Mini Hydro Power Generation

• Main Author: Yogastama-13113007, Agisatyo
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25104
• Institution: Institut Teknologi Bandung

In this study, the design and numerical simulation of Francis Turbine system for 30 m head and 500 kW power rating is commenced. The power generated from this turbine system is rated as Mini Hydro Electric Power Generation. Meridional geometry of the turbine blade is designed using 2 empirical methods, which are graphical method and Bovet method. The main components such as runner, guide vane, stay vane, spiral casing, and draft tube are modelled using Ansys BladeGen V17.1 and Autodesk Inventor 2017. This turbine system is further validated on Ansys Fluent with k-epsilon turbulence model at steady state condition. Results achieved from CFD simulation show that the BEP (Best Efficiency Point) is reached on the 21° opening of guide vane. At the same point, the calculated efficiency is 84,3% with 1,97 m3/s flowrate and also able to produce 479 kW. In the design operating region, the designed turbine could provide 500 kW power at guide vane opening between 23°-25° by 2-2,17 m3/s flowrate with efficiency ranging from 82-83%. The lowest calculated pressure in this design is valued higher than the working fluid vapor pressure at the operating temperature so that it is estimated the cavitation isn’t present. Based on the results, the design and numerical simulation of Francis Turbine system in this project are completed successfully.