Studi Eksperimental Pengaruh Jumlah Dan Mekanisme Bilah Bertingkat Pada Turbin Hidrokinetik Vertikal Tipe Darrieus Pivoted Hydrofoil

Apriliyandi, Muhammad (2023) Studi Eksperimental Pengaruh Jumlah Dan Mekanisme Bilah Bertingkat Pada Turbin Hidrokinetik Vertikal Tipe Darrieus Pivoted Hydrofoil. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini dilakukan secara eksperimental untuk mengetahui pengaruh penambahan tingkatan dan mekanisme pivot terhadap performa turbin Darrieus straight blade dengan hydrofoil NACA 0018. Variasi yang digunakan pada penelitian ini yaitu konfigurasi jumlah tingkatan turbin, konfigurasi mekanisme pivot pada setiap lengan, dan kecepatan aliran air sebesar 0.29 m/s, 0.34 m/s, dan 0.39 m/s. Penambahan tingkatan memiliki efek positif terhadap performa turbin dengan memberikan gaya lift oleh hydrofoil tambahan pada tiap lengan turbin. Pemberian mekanisme pivot dengan sudut bukaan 0° hingga 90° pada model 2 memberikan efek positif terhadap performa turbin dengan memberikan gaya drag tambahan oleh mekanisme pivot yang sedang tertutup pada sudut azimuth 180° hingga 270° sehingga dapat memberikan ekstraksi torsi terbesar untuk turbin Darrieus. Peningkatan kecepatan aliran yang digunakan akan memberikan efek positif pada turbin tersebut dengan meningkatnya nilai Re maka meningkat pula gaya lift dan drag pada AOA tertentu, sehingga trubin ini dapat menjadi lift device dan drag device pada saat yang bersamaan. Penambahan jumlah tingkatan meningkatkan nilai Cp sebesar 15.8% dan 33.5% sedangkan penambahan mekanisme pivot meningkatkan nilai Cp sebesar 8.4% dan 17.9%.
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This research was conducted experimentally to determine the influence of adding cascade levels and pivot mechanisms on the performance of a Darrieus straight blade turbine with a NACA 0018 hydrofoil. The variations used in this study were the configuration of the number of turbine cascade levels, the configuration of the pivot mechanism on each arm, and water flow velocities of 0.29 m/s, 0.34 m/s, and 0.39 m/s. Adding cascade levels had a positive effect on the turbine performance by providing additional lift force through the hydrofoil on each turbine arm. The application of a pivot mechanism with an opening angle of 0° to 90° on model 2 had a positive effect on the turbine performance by providing additional drag force through the closed pivot mechanism at azimuth angles of 180° to 270°, thus enabling the extraction of the largest torque for the Darrieus turbine. Increasing the flow velocity had a positive effect on the turbine, as higher Reynolds numbers increased the lift and drag forces at certain angles of attack, allowing the turbine to function as both a lift device and a drag device simultaneously. The addition of levels increases Cp value by 15.8% and 33.5%, while the addition of pivot mechanisms increases Cp value by 8.4% and 17.9%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Drag device, Lift device, Mekanisme pivot, Turbin Darrieus Darrieus turbine, drag device, lift device, pivot mechanism
Subjects:	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:	Muhammad Apriliyandi
Date Deposited:	28 Jul 2023 14:58
Last Modified:	28 Jul 2023 14:58
URI:	http://repository.its.ac.id/id/eprint/99687

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