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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
I Kade Wiratama, I Kade
Mechanical Department, Faculty of Engineering, Mataram University
Aerospace Engineering Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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PENGARUH VARIASI JUMLAH BLADE TURBIN ANGIN TERHADAP OUTPUT DAYA LISTRIK Wiratama, I Kade; Mara, Made; Mulyanto, Arif; Harianhady, Muliadi
Dinamika Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Some area in Indonesia such as southern part of Sumatra to Nusa Tenggara have big enough wind speed to produce electrical energy by using wind turbine. However, the potential resources are not yet fully developed, and only 1.4 GW electrical energy has been generating in the Indonesia region. Most of the wind energy generating equipment is designed to the European wind speed which is   10 - 30 knot. So, it is very important to modify the such equipment to be able to implement in Indonesia area which is have a lower wind speed.The purpose of this research is to know the influence of number of blades and wind speed to electricity generated by horizontal axis wind turbine with blade taper inversed linear.The result showed that the highest electrical output power was 2,02 watt produced by 5 blades and 3,5 m/s wind speed. The lowest electrical output power was 2,347 watt achieved by using 3 blades and 2,5 m/s wind speed.
Analisis Aerodinamika Diffuser Dengan Kurvatur Lengkung Berbasis Airfoil Pada Variasi Sudut Serang dan Tinggi Flange Muhammad, Baginda Arsyi; Wiratama, I Kade; Joniarta, I Wayan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.269

Abstract

Low wind speeds in residential areas often pose an obstacle to the use of small- and micro-scale wind turbines. Various efforts have been made to address this issue, particularly to improve wind turbine performance. One such method is the application of a diffuser, or wind lens, during turbine operation. However, existing diffuser designs still require further development in order to achieve more efficient aerodynamic performance, optimize wind speed, and provide a more compact configuration. In this study, a diffuser with curved geometry based on the Wortmann FX-63-137 airfoil was analyzed using Ansys Fluent simulations. The variations tested included angles of attack of 0°, 4°, 8°, and 12°, as well as flange heights of 0.05D, 0.10D, 0.15D, 0.20D, and 0.25D. The simulation results indicated an increase in wind velocity at the throat area, with the best performance achieved at a 4° angle of attack with a 0.10D flange. Under these conditions, the available wind power reached 203.20 W, representing an increase of approximately 34.01%.
Co-Authors Agus Dwi Catur Ananda Putra, Yoga Raditya Arif Mulyanto, Arif I Ketut Wiryajati I Made Adi Sayoga, I Made Adi I Made Mara I Nyoman Wahyu Satiawan I Wayan Joniarta I Wayan, Joniarta Ida Bagus Fery Citarsa L. Edsona Furqan Prina, L. Edsona Furqan Made Mara, Made Made Wijana, Made Muhammad, Baginda Arsyi Muliadi Harianhady, Muliadi Purnama, Febrian Usman, Zohimundin