Simulasi Aliran Fluida Pada Turbin Angin Savonius Dengan Metode SIMPLE

'Adhimah, Nila Muhaimatul (2024) Simulasi Aliran Fluida Pada Turbin Angin Savonius Dengan Metode SIMPLE. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pesatnya pertumbuhan kawasan industri nasional di Indonesia menyebabkan angka konsumsi listrik sebagai salah satu kebutuhan pokok turut meningkat pula. Namun, kenyataannya proses pemenuhan pasokan listrik masih didominasi oleh pembangkit listrik yang menggunakan energi tidak terbarukan seperti batu bara. Hal ini tidak selaras dengan program pemerintah untuk melakukan transisi dengan mengoptimalkan energi baru terbarukan (EBT) di Indonesia, salah satunya adalah angin. Pada proses konversi angin menjadi energi listrik, sering digunakan turbin angin savonius tipe vertikal sebagai medianya. Salah satunya adalah turbin dengan struktur “S” atau yang dikenal dengan turbin angin savonius. Pada penelitian ini, bentuk turbin dimodifikasi dengan melakukan variasi pada jari-jari (r) dan sudut potong penampang bilah (α). Proses simulasi menggunakan persamaan Navier-Stokes untuk merepresentasikan fluida dengan sifat incompressible, unviscous, dan unsteady yang diselesaikan dengan metode SIMPLE (Semi Implicit Method for Pressure-Linked Equation). Proses penelitian ini menggunakan software MATLAB. Berdasarkan simulasi, didapatkan bahwa bahwa rata-rata kecepatan alir fluida tertinggi terjadi saat turbin memiliki r=0,9D dan α=150° serta rata-rata paling rendah terjadi saat turbin memiliki r=3D dan α=45°. Sedangkan pada aspek distribusi tekanannya, saat bilangan Reynolds 500 total tekanan tertinggi diperoleh turbin dengan r=1,125D dan α=120°, pada bilangan Reynolds 2500 total tekanan tertinggi oleh turbin dengan r=1,5D dan α=90°. Sedangkan saat bilangan Reynolds 5000, total tekanan paling tinggi diterima oleh turbin dengan r=2,5D dan α=60°.
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The rapid growth of national industrial areas in Indonesia has caused electricity consumption as a basic need to also increase. However, in reality the process of fulfilling electricity supply is still dominated by power plants that use non-renewable energy such as coal. This is not in line with the government's program to make a transition by optimizing new renewable energy (EBT) in Indonesia, one of which is wind. In the process of converting wind into electrical energy, a vertical type Savonius wind turbine is often used as the medium. One of them is a turbine with an "S" structure or what is known as a Savonius wind turbine. In this research, the turbine shape was modified by varying the radius (r) and blade cross-sectional cutting angle (α). The simulation process uses the Navier-Stokes equations to represent fluids with incompressible, unviscous and unsteady properties which are solved using the SIMPLE method (Semi Implicit Method for Pressure-Linked Equation). This research process uses MATLAB software. Based on the simulation, it was found that the highest average fluid flow speed occurred when the turbine had r=0.9D and α=150° and the lowest average occurred when the turbine had r=3D and α=45°. Meanwhile, in the aspect of pressure distribution, when the Reynolds number is 500, the highest total pressure is obtained by the turbine with r=1.125D and α=120°, at the Reynolds number 2500, the highest total pressure is obtained by the turbine with r=1.5D and α=90°. Meanwhile, when the Reynolds number is 5000, the highest total pressure is received by the turbine with r=2.5D and α=60°.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Savonius Wind Turbine, Navier-Stokes Equation, SIMPLE Method, Turbin Angin Savonius, Persamaan Navier-Stokes, Metode SIMPLE
Subjects:	T Technology > T Technology (General) > T57.62 Simulation T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines
Divisions:	Faculty of Mathematics, Computation, and Data Science > Mathematics > 44201-(S1) Undergraduate Thesis
Depositing User:	'Adhimah Nila Muhaimatul
Date Deposited:	14 Feb 2024 21:23
Last Modified:	14 Feb 2024 21:23
URI:	http://repository.its.ac.id/id/eprint/107054

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