Studi Numerik Dua Turbin Air Savonius dengan Advancing Blade Berdekatan pada Konfigurasi Side-by-Side yang Diletakkan di dalam Kanal

Izzah, Anisah Nurul (2023) Studi Numerik Dua Turbin Air Savonius dengan Advancing Blade Berdekatan pada Konfigurasi Side-by-Side yang Diletakkan di dalam Kanal. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Seiring bertambahnya jumlah penduduk di Indonesia, ketersediaan sumber energi semakin menipis dan perlu alternatif lain untuk mencegah punahnya sumber energi yaitu dengan penggunaan sumber energi terbarukan (EBT). Tenaga hidro adalah salah satu EBT yang potensinya dapat dioptimalkan karena meminimalisir kerusakan lingkungan dan pemanasan global. Indonesia memiliki perairan yang besar sehingga dapat dimanfaatkan secara penuh (24 jam sehari). Kecepatan air sungai rata-rata di Indonesia adalah 0,3-0,62 m/s. Penggunaan turbin air Savonius memanfaatkan sungai di Indonesia yang memiliki kecepatan aliran rendah. Penelitian dilakukan untuk mengetahui pengaruh peletakan turbin air Savonius terhadap performa turbin air jika diletakkan didalam kanal.
Penelitian menggunakan ansys FLUENT 2021 R2 dengan mesh yang dipilih dari proses grid independency test. Simulasi menggunakan model realizable k-epsilon. Torsi dinamis tiap 1˚ akan dicatat selama 10 revolusi untuk mengkalkulasi nilai coefficient of power dan coefficient of moment. Penelitian menggunakan dua turbin air Savonius yang disusun secara side-by-side dengan advancing blade berdekatan dan diletakkan didalam kanal dengan lebar konstan 500 mm. Turbin memiliki diameter sudu (D) 60 mm dan diameter poros turbin (b) 10 mm. Penelitian dilakukan menggunakan rasio jarak dua poros turbin dengan diameter turbin (S/D) sebesar 2,0; 2,333; 2,5; 2,667; 3; 3,333; dan 5 serta kecepatan air sebesar 0,25 m/s.
Hasil yang didapatkan dari penelitian ini adalah peletakan turbin Savonius ganda di dalam kanal secara side-by-side dengan advancing blade berdekatan pada semua variasi S/D = 2; 2,333; 2,667; 3; 3,333; dan 5 menghasilkan nilai coefficient of power lebih tinggi dibandingkan turbin tunggal. S/D = 2,667 merupakan jarak optimum karena peningkatan daya yang dihasilkan paling tinggi, yaitu kurang lebih sebesar 82% pada masing-masing turbin dengan nilai CoP = 0,341 pada turbin 1 dan 0,343 pada turbin 2.
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As the population increases in Indonesia, the availability of energy sources is decreases and other alternatives are needed to prevent the extinction of energy sources, namely by using renewable energy sources. Hydropower is one of renewable energy which potential can be optimized because it minimizes environmental damage and global warming. Indonesia has large waters so that it can be fully utilized (24 hours a day). The average speed of river water in Indonesia is 0.3-0.62 m/s. The use of the Savonius water turbine takes advantage of rivers in Indonesia which have low flow velocity. The study was conducted to determine the effect of placing the Savonius hydrokinetic turbine on the performance of the turbine when it is placed in the canal.
The study uses ansys FLUENT 2021 R2 with meshes selected from the grid independence test process. The simulation uses k-epsilon realizable model. Dynamic torque every 1˚ will be recorded for 10 revolutions to calculate the value of coefficient of power and coefficient of moment. The study used two Savonius turbines arranged side-by-side with adjacent advancing blades and placed in a canal with a constant width of 500 mm. the turbine has a blade diameter (D) of 60 mm and a turbine shaft diameter (b) of 10 mm. the research was conducted using the ratio of the distance between two turbine shafts to the turbine diameter (S/D) of 2.0; 2.333; 2.667; 3; 3,333; and 5 with water speed of 0.25 m/s.
The results obtainer from the study used two Savonius turbines arranged side-by-side with adjacent advancing blades and placed in a canal are in all variations S/D = 2, 2.333, 2.667, 3, 3.333, and 5 produces a higher coefficient of power than a single turbine. S/D = 2.667 is the optimum distance because the increase in power produced is the highest, which is approximately 82% for each turbine with CoP = 0.341 for first turbine and CoP = 0.343 for second turbine.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	turbin air savonius, side-by-side, advancing blade, coefficient of power, coefficient of moment, Savonius hydrokinetic turbine, side-by-side, advancing blade, coefficient of Power, coefficient of Moment
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General)
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis
Depositing User:	Anisah Nurul Izzah
Date Deposited:	07 Aug 2023 01:55
Last Modified:	07 Aug 2023 01:55
URI:	http://repository.its.ac.id/id/eprint/103542

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