Horizontal Axis Wind Turbine Efficiency Optimization Through Tip Radius Modification on 4:5 Flat Taper Blades

Authors

  • Sahid Sahid Department of Mechanical Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia
  • Faranita Putri Anandia Politeknik Negeri Semarang
  • Christopher Johanes Edsel Wattimena Department of Mechanical Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia
  • Okta Ayu Pratiwi Department of Mechanical Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia
  • Riris Annisa Tarra Tantri Department of Mechanical Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia
  • Muhammad Barid Department of Mechanical Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia

DOI:

https://doi.org/10.32497/eksergi.v21i03.7112

Keywords:

edge modification, flat tapper, horizontal axis, performance, , wind turbine

Abstract

This study aims to investigate how changing the roundness of the back edge of blades affects a 4:5 flat taper wind turbine. Tests used blades with 5 mm, 10 mm, and 15 mm rounded edges, compared to a 5 mm notched blade, across wind speeds from 3 to 9 m/s. The results show the 5 mm rounded edge works best at low wind speeds, with an efficiency of 11.12% at 3 m/s. At higher wind velocities, the 15 mm rounded blade demonstrated superior aerodynamic performance, attaining an efficiency of 1.63% at 7 m/s. The rounded trailing edge improved aerodynamic behavior by minimizing turbulence and enhancing flow stability. Therefore, the optimal edge radius should be determined based on regional wind characteristics, especially for low-speed wind zones typical of Indonesia

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Published

2025-09-20

Issue

Vol. 21 No. 03 (2025): SEPTEMBER 2025

Section

Articles

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Copyright (c) 2025 Faranita Putri Anandia, Sahid Sahid, Christopher Johanes Edsel Wattimena, Okta Ayu Pratiwi, Riris Annisa Tarra Tantri, Muhammad Barid

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