Analisis Kinerja Aerodinamik dari Vertical Axis Wind Turbine (VAWT) Darrieus Tipe H-Rotor dengan Pendekatan Computational Fluid Dynamic (CFD)

Fridayana, Elyas Nur (2018) Analisis Kinerja Aerodinamik dari Vertical Axis Wind Turbine (VAWT) Darrieus Tipe H-Rotor dengan Pendekatan Computational Fluid Dynamic (CFD). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Teknologi konversi energi baru terbarukan kian berkembang seiring meningkatnya kesadaran manusia terhadap dampak negatif pada lingkungan. Vertical Axis Wind Turbin (VAWT) menjadi objek penelitian yang menarik karena berbagai keunggulan yang ditawarkan. Khususnya VAWT jenis Darrieus tipe H-Rotor dikenal dengan struktur yang sederhana namun memiliki efisiensi yang relatif tinggi dibandingkan jenis Savonius. Profil airfoil menjadi hal yang sangat penting karena efek aerodinamik yang bekerja pada turbin Darrieus. Berbagai studi telah mengungkapkan bahwa penggunaan airfoil asimetris memberikan keuntungan pada efisiensi turbin Darrieus. Pada penelitian ini dilakukan analisis berbagai variabel guna mengetahui efek aerodinamik yang ditimbulkan. Lebih lanjut, fokus analisis ditujukan pada pengaruh posisi maksimum camber airfoil terhadap kinerja turbin. Investigasi dilakukan dengan menggunakan Computational Fluid Dynamic (CFD). Model turbin Darrieus tipe H-Rotor dua dimensi disimulasikan dalam kondisi aliran transient. Hasil simulasi berupa koefisien daya menunjukan bahwa kinerja turbin terbaik diberikan oleh airfoil dengan posisi maksimum camber mendekati trailing edge. Sedangkan variasi pada lebar chord memberikan nilai solidity ratio 0,6 menjadi yang terbaik diantara nilai diatas maupun dibawahnya. ======================================================================================================== The recent reweable energy growing significantly as people more aware concerning its side effect toward environment. Vertical Axis Wind Turbin (VAWT) become curious object for research because the several advantage it offer. Chiefly Darrieus VAWT type H-Rotor known for its simple structure yet has high efficiency compared with Savonius. Airfoil profile become substantial because its aerodynamic effect which run on the Darrieus turbine. Numerous study explained that the usage of asymmetric airfoil give advantage toward Darrieus turbine efficiency. This research conducted a variety of variables to determine the effects of aerodynamics. Furthermore, the the analysis focus on influence of cambered airfoil to the turbine performance. Investigation delivered by Computational Fluid Dynamic (CFD) two dimention Darrieus turbine type H-Rotor simulated in trancient current condition. The result of the simulation presented as energy coefficient which shows that the best turbine performance conducted by airfoil in maximum camber close to trailing edge. While the variation on the chord length gives a solidity ratio of 0.6 as the best value between the above and below.

Item Type: Thesis (Undergraduate)
Additional Information: RSKe 623.746 Fri a-1 3100018074817
Uncontrolled Keywords: aerodinamik, asimetri airfoil, camber, CFD, darrieus, aerodynamics, asymmetric airfoil
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics.
T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL521 Aerodynamics, Hypersonic.
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Elyas Nur Fridayana
Date Deposited: 08 Feb 2018 08:26
Last Modified: 28 Mar 2020 15:28
URI: http://repository.its.ac.id/id/eprint/50120

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