Putra, I Kadek Yamuna Gangga (2015) Analisis Performansi Turbin Arus Laut Vertikal Aksis Jenis V-STRAIGHT Dan V-HELICAL Terhadap Perubahan Dimensi Berbasis CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Meningkatnya kebutuhan energi listrik perlu
diiringi dengan adanya peningkatan pembangkit listrik yang
berasal dari energi terbarukan seperti turbin arus laut. Sebelum
membuat turbin dalam skala besar perlu membuat model turbin
yang memperhatikan konsep keserupaan. Dalam setiap skala
model turbin, harus memiliki nilai bilangan non-dimensional yang
sama antara turbin nyata skala besar dengan turbin model skala
kecil. Pada penelitian kali ini dilakukan simulasi CFD pada turbin
arus laut vertikal aksis dengan jenis turbin V-Straight dan turbin VHelical.
Dilakukan variasi perbesaran dimensi 1 kali, 2 kali, 3 kali
dan 4 kali serta variasi kecepatan aliran mulai dari 0.5 m/s – 2 m/s.
Berdasarkan hasil simulasi CFD didapatkan hubungan gaya turbin
yang sebanding dengan kuadrat perubahan kecepatan aliran dan
kuadrat perbesaran dimensi, lalu Torsi turbin yang sebanding
dengan kuadrat perubahan kecepatan aliran dan pangkat tiga
perbesaran dimensi, sedangkan daya sebanding dengan pangkat
tiga perubahan kecepatan aliran dan kuadrat perbesaran dimensi.
Torsi pada turbin V-Helical lebih stabil dibandingkan pada VStraight,
namun nilai torsi rata – ratanya lebih besar turbin VStraight
yaitu 111028 Nm dibandingkan dengan turbin V-Helical
yaitu sebesar 88585 Nm. ========== The growing need for electrical energy needs to
be accompanied by an increase in electricity generation from
renewable energy such as ocean current turbines. Before making
large-scale turbines need to make turbine model that takes into
account the concept of similarity. In each scale model of the
turbine, should have a number of non-dimensional value of the
same between large-scale real turbine with a small-scale model
turbines. In the present research performed CFD simulation on the
vertical axis turbine ocean currents with V-Straight type turbine
and turbine V-Helical. Do variations in magnification dimension 1
time, 2 times, 3 times and 4 times as well as the flow velocity
variations ranging from 0.5 m / s - 2 m / s. Based on CFD
simulation results obtained relationship turbine style which is
proportional to the square of the flow velocity changes and squared
of the magnification dimension changes, then the turbine torque is
proportional to the square of the flow velocity changes and cube of
dimensional magnification changes, while the power is
proportional to the cube of flow velocity changes and the square of
the dimension magnification changes. Torque in the V-Helical
turbine is more stable than the V-Straight, but the average value of
torque - means are bigger turbines V-Straight is equal to 111028
Nm compared with the V-helical turbine is equal to 88585 Nm
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSF 621.24 Put a |
| Uncontrolled Keywords: | Perbesaran Dimensi, V-Straight, V-Helical, CFD, Dimensions Magnification |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 12 Mar 2019 05:31 |
| Last Modified: | 12 Mar 2019 05:31 |
| URI: | http://repository.its.ac.id/id/eprint/62475 |
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