Pengaruh Variasi Jumlah Dan Mekanisme Tingkatan Pada Turbin Hidrokinetik Vertikal Tipe Darrieus Pivoted Foil

Sobari, Dimas Akhmad (2024) Pengaruh Variasi Jumlah Dan Mekanisme Tingkatan Pada Turbin Hidrokinetik Vertikal Tipe Darrieus Pivoted Foil. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 02311940000164-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2026. Download (10MB) | Request a copy

Abstract

Penelitian ini dilakukan dengan menggunakan simulasi CFD untuk mengetahui bagaimana adanya penambahan tingkatan dan mekanisme pivoted foil terhadap performansi turbin Darrieus straight blade dengan menggunakan hydrofoil NACA 0018. Pada penelitian ini digunakan variasi konfigurasi jumlah tingkatan pada turbin, konfigurasi mekanisme pivoted foil pada setiap lengan , dan juga pada penelitian ini menggunakan variasi kecepatan aliran sebesar 0.29 m/s, 0.34 m/s, 0.39 m/s, 0.44 m/s, 0.49 m/s, dan 0.54 m/s. mekanisme pada pivoted foil dibuat untuk memberikan gaya drag pada turbin darrieus sehingga dapat meningkatkan performansi yang didapat selain itu adanya penambahan jumlah Tingkatan juga membuat performansi menjadi lebih baik, model 2 mendapat nilai Cp terbaik dengan menggunakan pivoted foil dapatan bergerak sebesar 90° sehingga pada turbin terjadi gaya drag dan gaya lift sebagai gaya putarnya sehingga memberikan ekstraksi torsi yang lebih besar untuk turbin. Penggunaan variasi aliran digunakan untuk melihat peningkatan Cp yang terjadi dan juga untuk melihat adanya fenomena aliran yang terjadi sehingga membuat mekanisme dapat memberikat performansi yang lebih tinggi, adanya penambahan mekanisme pivoted foil pada turbin darrieus meningkatkan Cp sebesar 31% sedangkan pada VAHT-SBC meningkatkan Cp sebesar 9 % dibandin dengan menggunakan Hydrofoil NACA 0018.
=============================================================================================================================
This research was conducted using CFD simulation to investigate the impact of adding levels and pivoted foil mechanisms on the performance of a Darrieus straight blade turbine employing the NACA 0018 hydrofoil. The study considered variations in the configuration of turbine levels, the arrangement of pivoted foil mechanisms on each blade, and different flow velocities, specifically 0.29 m/s, 0.34 m/s, 0.39 m/s, 0.44 m/s, 0.49 m/s, and 0.54 m/s. The pivoted foil mechanism was designed to induce drag force on the Darrieus turbine, enhancing its overall performance. Additionally, the inclusion of more levels improved the turbine's performance. Two pivotal aspects were explored in the study: the configuration of the number of turbine levels and the pivoted foil mechanism on each blade. The pivoted foil mechanism was designed to impart drag and lift forces, resulting in increased torque extraction for the turbine. Model 2 demonstrated the best Cp value, utilizing a pivoted foil with a 90° range of motion, contributing to enhanced drag and lift forces and, consequently, greater torque extraction.Variations in flow velocity were employed to observe changes in Cp and to understand flow phenomena that could contribute to improved performance. The addition of pivoted foil mechanisms increased Cp by 31% for the Darrieus turbine, while for the VAHT-SBC, Cp increased by 9%, compared to using the NACA 0018 hydrofoil alone. This demonstrates that incorporating pivoted foil mechanisms in Darrieus turbines significantly enhances their performance compared to traditional hydrofoil configurations.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Drag, CFD, Hydrofoil, Lift, Pivoted foil
Subjects:	Q Science > QC Physics > QC151 Fluid dynamics T Technology > T Technology (General) > T57.62 Simulation T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General)
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Dimas akhmad sobari
Date Deposited:	14 Feb 2024 08:40
Last Modified:	14 Feb 2024 08:40
URI:	http://repository.its.ac.id/id/eprint/107029

Actions (login required)

View Item