Analisis Pengaruh Variasi Sudut Pasang Deflektor Aliran Pada Turbin Arus Laut Tipe Crossflow

Wijaya, Jean Viola (2024) Analisis Pengaruh Variasi Sudut Pasang Deflektor Aliran Pada Turbin Arus Laut Tipe Crossflow. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kecepatan arus di di wilayah perairan Indonesia sekitar 2.0 m/s, yang sudah cukup memadai untuk menghasilkan energi listrik. Arus laut dapat dikonversi menjadi energi listrik dengan menggunakan turbin arus laut. Turbin arus laut yang cukup banyak digunakan adalah turbin Savonius. Kelemahan turbin Savonius adalah kemampuannya dalam menghasilkan torsi dan daya cukup rendah. Salah satu cara meningkatkan performa turbin adalah dengan menambahkan deflektor aliran yang bermanfaat untuk menghalangi aliran menuju returning blade. Pada penelitian ini dilakukan analisis variasi sudut pasanf deflektor aliran berbentuk lengkung yang telah didesain sebelumnya dengan menggunakan metode numerik, ANSYS Fluent. Nilai torsi dan daya paling maksimum didapatkan pada sudut lengkung 30° untuk setiap variasi kecepatan 0,3-0,9 m/s dengan peningkatan 8%. Penurunan signifikan terjadi pada sudut lengkung 55° dengan penurunan rata-rata 62%. Beberapa hal yang mempengaruhi adalah kecepatan aliran fluida, kelengkungan, dan adanya jarak antara deflektor aliran dan turbin yang terlalu besar.
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The current speed in Indonesian waters is around 2.0 m/s, which is sufficient to generate electrical energy. Ocean currents can be converted into electrical energy using ocean current turbines. A fairly widely used ocean current turbine is the Savonius turbine. The weakness of the Savonius turbine is its ability to produce torque and power is quite low. One way to improve turbine performance is to add a flow deflector that is useful for blocking the flow towards the returning blade. In this study, the variation of the angle of the curved flow deflector that has been designed previously is analyzed using the numerical method, ANSYS Fluent. The maximum torque and power values were obtained at a curved angle of 30° for each speed variation of 0.3-0.9 m/s with an increase of 8%. A significant decrease occurred at a curved angle of 55° with an average decrease of 62%. Some things that affect are fluid flow velocity, curvature, and the distance between the flow deflector and the turbine is too large.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Savonius turbine, crossflow turbine, flow deflector, angle, Turbin Savonius, cross flow, deflektor aliran, sudut pasang
Subjects:	T Technology > T Technology (General) > T57.62 Simulation T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TJ Mechanical engineering and machinery > TJ1058 Rotors T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy or power T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872.C8 Current converters T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electric current converters, Electric inverters.
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Jean Viola Wijaya
Date Deposited:	25 Jul 2024 03:26
Last Modified:	25 Jul 2024 03:26
URI:	http://repository.its.ac.id/id/eprint/108773

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