Analisi Kinerja Hidrodinamik Vertical Axis Water Turbine (VAWT) Tipe Gorlov Dengan Variabel Sudut Miring Bilah Dan Ketebalan Hidrofoil Dengan Metode Computational Fluid Dynamics (CFD)

Nurliana, Annisa Aisyah (2021) Analisi Kinerja Hidrodinamik Vertical Axis Water Turbine (VAWT) Tipe Gorlov Dengan Variabel Sudut Miring Bilah Dan Ketebalan Hidrofoil Dengan Metode Computational Fluid Dynamics (CFD). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Isu energi terbarukan dan ramah lingkungan menjadi fokus penelitian di beberapa negara mendorong terciptanya energi alternatif yang ramah lingkungan. Pemerintah sendiri pun sudah memiliki keinginan untuk mendorong peningkatan penyediaan Energi Baru Terbarukan (EBT). Salah satunya dengan pemanfaatan turbin untuk menghasilkan energi listrik. Vertical Axis Water Turbin (VAWT) dapat menjadi salah satu objek penelitian yang menarik karena memiliki berbagai macam kelebihan, diantaranya karena karakteristik VAWT yang strukturnya lebih sederhana, bisa bergerak pada arus yang relatif lambat dan menerima arus dari segala arah. Pada penelitian ini, disimulasikan turbin eksperimental dari data sekunder secara numerik menggunakan metode Computational Fluid Dynamics (CFD) dengan bantuan software ANSYS V18.1. Model turbin tipe Gorlov disimulasikan secara 3 dimensi dalam kondisi aliran steady state. Validasi dilakukan setelah hasil numerik telah didapatkan dengan tingkat error rata-rata harus kurang dari 10%. Variasi yang dilakukan dalam penelitian ini adalah ketebalan hidrofoil menggunakan NACA 0010, NACA 0016 dan NACA 0020, serta variasi inclination angle atau sudut miring bilah sebesar 25 derajat dan 60 derajat. Setelah dilakukan perbandingan dari hasil simulasi berupa nilai torsi, ditunjukkan bahwa kinerja turbin terbaik diberikan oleh turbin yang menggunakan NACA 0016 dengan sudut miring bilah sebesar 60 derajat. ==================================================================================================== The issue of renewable and eco-friendly energy has become the focus of research in several countries to encourage the creation of eco-friendly alternative energy. The government itself also has the desire to encourage an increase in the supply of Renewable Energy. One of them is by using turbines to produce electrical energy. Vertical Axis Water Turbine (VAWT) can be an interesting object of research because it has various advantages, including because VAWT has a simpler structure, can move at relatively slow currents and famous for its tendency to move regardless the water flow directions. In this study, the experimental turbine from secondary data numerically simulate using the Computational Fluid Dynamics (CFD) method with the help of ANSYS V18.1 software. The Gorlov turbine model is simulated in 3 dimensions under steady state flow conditions. Validation is carried out after numerical results have been obtained with the mean error rate being less than 10%. The variables in this research are the thickness of the hydrofoil using NACA 0010, NACA 0016 and NACA 0020, as well as variations in the inclination angle of blade for 25 deg and 60 deg. After the comparison of the simulation results in the form of torque values is done, it is shown that the best turbine performance is given by water turbine using NACA 0016 with 60 deg of inclination angle.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Gorlov turbine, Hydrofoil Thickness, Inclination Angle, CFD, Torque, Turbin Gorlov, Ketebalan Hidrofoil, inclination angle, CFD, Torsi.
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics
T Technology > TC Hydraulic engineering. Ocean engineering
T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power.
T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Annisa Aisyah Nurliana
Date Deposited: 28 Feb 2021 20:54
Last Modified: 28 Feb 2021 20:54
URI: https://repository.its.ac.id/id/eprint/82970

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