Analisis Pengaruh Jumlah Foil Terhadap Performansi Turbin Arus Air Vertikal Aksis Jenis Helical Dengan Cascade Foil Berbasis CFD

Amarta, Zain (2016) Analisis Pengaruh Jumlah Foil Terhadap Performansi Turbin Arus Air Vertikal Aksis Jenis Helical Dengan Cascade Foil Berbasis CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Performansi turbin helical dapat ditingkatkan dengan cara mengubah parameter desain turbin. Salah satu metode yang dikembangkan yaitu dengan penambahan beberapa foil dalam satu lengan turbin (cascade foil). Analisis tentang pengaruh jumlah foil terhadap performansi turbin helical dengan cascade foil dilakukan melalui simulasi numerik berbasis Computational Fluid Dynamics (CFD). Simulasi dilakukan dengan variasi turbin helical (model I), turbin helical cascade 2 foil (model II), dan turbin helical cascade 3 foil (model III) pada kecepatan arus air yaitu 0,5 m/s, 1 m/s, 1,5 m/s, dan 2 m/s. Hasil simulasi menunjukkan turbin model III memiliki performansi terbaik dibandingkan dengan turbin model I dan II. Turbin model III mengalami peningkatan gaya dan torsi terhadap turbin model I masing-masing sebesar 37,38-100,95% dan 43,87- 111,77% pada kecepatan arus air 0,5-2 m/s. Turbin model II dan model III mendapatkan distribusi tekanan dan kecepatan arus air pada masing-masing foil sehingga tekanan total dan kecepatan arus air total yang diterima bernilai lebih besar dibandingkan dengan turbin model I. ======================================================================================================================== The performance of helical turbine could be improved by modifying the design parameter of a turbine. One of the improvement methods is by adding some turbine foil in one arm (cascade foil). Computational Fluid Dynamics (CFD) analysis of the number of foil effects on the performance of helical turbine with cascade foil by numerical simulation was conducted. On this research, helical turbine (model I) was modified into helical turbine with 2 cascade foil (model II) and helical turbine with 3 cascade foil (model III). Each model was simulated on various water current velocity of 0.5 m/s, 1 m/s, 1.5 m/s and 2 m/s. The simulation results showed that the turbine with model III has the best performance compared to model I and II turbine. The model III turbine produced higher output force by 37.38-100.95% and higher output torque by 43.87-111.77% compared to the model I turbine at water current velocity of 0.5-2 m/s. The model II and III turbine acquired the pressure and water current velocity distribution in each foil. Thus, the total pressure and total water current velocity received were higher than the model I turbine.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 621.24 Zai a
Uncontrolled Keywords: turbin helical, cascade foil, gaya, torsi, karakteristik aliran
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Industrial Technology > Physics Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Ansi Aflacha
Date Deposited: 16 Aug 2017 02:56
Last Modified: 16 Aug 2017 02:56
URI: http://repository.its.ac.id/id/eprint/48609

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