Analisis Performansi Turbin Arus Laut Vertikal Aksis Jenis V-STRAIGHT Dan V-HELICAL Terhadap Perubahan Dimensi Berbasis CFD

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: https://repository.its.ac.id/id/eprint/62475

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