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Analysis of Savonius water turbine performance on Horizontal Axis with blade modification
Dandun Mahesa Prabowoputra1, Syamsul Hadi2, Jung Min Sohn3, Aditya Rio Prabowo2

1.Graduate School of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A, Central Java, Surakarta, 57126 Indonesia
2.Department of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A, Central Java, Surakarta, 57126 Indonesia
3.Department of Naval Architecture and Marine System Engineering, Pukyong National University,Busan 48513, South Korea


Savonius water turbine research is still growing today. One of the developments that has been made is about modification of geometry. The research that has been done aims to improve the efficiency of savonius turbines. Savonius turbine has a simple structure, and is easily applied so that research on the savonius turbine is interesting. Savonius rotor ability that can operate at low velocity is an advantage that can be combined in the process of developing renewable energy. One of the researches that develops is changes in blade shape. In this study a change in blade shape was carried out. The circular profile "S" shaped geometry is modified into a semi-circular profile "L" with an outer overlap. Research has been carried out simulations using Ansys software with CFX Solver. Savonius rotors that have been used in this study are rotors with aspect ratio 1. Simulation has been done on 3-dimensional modeling and on the properties of pure water. Mesh is performed on the workbench with the tetrahedral method, and uses the K-epsilon turbulent type. From this study it was found that blade modification into semi-circular with "L" profile and outer overlap can improve the performance of the savonius water turbine on the horizontal axis.

Keywords: Savonius Rotor, Water Turbine, CFD, Renewable Energy, Coefficient of Power

Topic: Mechanical Engineering


Conference: Broad Exposure on Science and Technology (BEST 2019)

Plain Format | Corresponding Author (Dandun Mahesa Prabowoputra)

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