Imanuddin, Fahmi (2016) Studi Numerik Karakteristik Turbin Arus Laut Vertikal Aksis Jenis Straight Blade Dengan Cascade Hydrofoil Berbasis Computational Fluid Dynamics. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Torsi merupakan salah satu karakteristik dari turbin arus laut.
Torsi sebanding dengan gaya yang mendorong benda bergerak.
Pada penelitian ini dilakukan simulasi untuk mengetahui
pengaruh jumlah hydrofoil terhadap karakteristik turbin arus
laut vertikal aksis tipe straight blade. Terdapat tiga jenis model
turbin yang disimulasikan, yaitu turbin 3 hydrofoil (model 1),
turbin 6 hydrofoil dengan cascade 2 (model 2) dan turbin 9
hydrofoil dengan cascade 3 (model 3). Setiap model dilakukan
simulasi dengan variasi kecepatan aliran 0,5; 1 dan 1,5 m/s.
Berdasarkan hasil simulasi, nilai gaya dan torsi yang dihasilkan
oleh turbin model 3 lebih besar dibandingkan dengan model
lainnya. Gaya yang dihasilkan turbin terjadi karena tekanan
dari fluida terhadap turbin, sehingga nilai gaya sebanding
dengan besarnya tekanan. Pada turbin model 3 luasan area lebih
besar dibandingkan model lainnya yang menyebabkan banyak
tekanan yang didapatkan. Profil aliran kontur tekanan dan
streamline kecepatan pada turbin merupakan fenomena aliran
yang tidak dapat dilihat pada uji eksperimen, serta menjelaskan
tekanan yang didapatkan dari fluida.
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Torque is one of the characteristics from ocean current turbine.
Torque is proportional to the force that drives the moving
objects. This research conducted a simulation to determine the
effect of the number of hydrofoil on the characteristics of the
vertical axis ocean current turbine straight blade type. There
are three types of models which are simulated turbine 3
hydrofoil (model 1), the turbine 6 hydrofoil to cascade 2 (model
2) and the turbine 9 hydrofoil with cascade 3 (model 3). Every
models simulated by varying the flow rate of 0.5; 1 and 1.5 m /
s. Based on simulation results, the value of the force and torque
produced by the turbine model 3 is greater than the other
models. The resulting force of turbine caused by the pressing
of the fluid on the turbine. Hence, the value of the proportional
force is equal to the number of pressure. At the turbine model
3 that area larger than other models which obtain much
pressure. Flow profile pressure countors and streamlined
speed on turbine are phenomena that can not be seen in the
experimental, and determine the pressure which is obtained by
fluid.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSF 621.24 Ima s |
| Uncontrolled Keywords: | gaya, torsi, jumlah hydrofoil, cascade, tekanan |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 15 Mar 2018 03:18 |
| Last Modified: | 27 Dec 2018 01:51 |
| URI: | http://repository.its.ac.id/id/eprint/51536 |
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