Studi Eksperimental Pengaruh Perbedaan Geometri Dan Aspect Ratio Pada Vertical Span Foil Terhadap Turbin Hidrokinetik Dengan Tailting Configuration

Musiran, Fuad Azhar (2021) Studi Eksperimental Pengaruh Perbedaan Geometri Dan Aspect Ratio Pada Vertical Span Foil Terhadap Turbin Hidrokinetik Dengan Tailting Configuration. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada pengujian Vertical Axis Hydrokinetic Turbine, perubahan orientasi arah dan gaya pada turbin vertikal menyebabkan potensi kegagalan sistem dan terjadi kerusakan dengan patahnya poros karena fluktuasi gaya yang terus bekerja pada poros, sehingga dilakukan penelitian lanjutan dengan menggunakan Turbin Hidrokinetik dengan Tailting Configuration. Pada penelitian ini dilakukan pengujian terhadap pengaruh perbedaan variasi span foil terhadap performansi turbin dengan variasi Configuration, geometri, aspect ratio, dan sudut . Pada pengujian yang dilakukan di PLTMH Seloliman, didapatkan kecepatan awal 1,1 m/s mengalami penurunan kecepatan aliran dengan range -20% hingga -32%, pada kecepatan awal 1,2 m/s mengalami penurunan kecepatan aliran berada di range -25% hingga -36%., sedangkan pada kecepatan 1,3 m/s penurunan kecepatan aliran berada di range -26% hingga -38%, dimana fenomena pada aliran fluida yang terjadi saat Turbin Hidrokinetik dengan Tailting Configuration dimasukkan kedalam kanal merupakan High Blockage Near Surface. Pada Configuration A, semakin besar sudut pitch, maka performansi yang didapatkan akan semakin menurun, sedangkan pada Configuration B semakin besar sudut pitch , kecenderungan performansi semakin meningkat. Pada pengujian ini juga didapatkan variasi aspect ratio 4 memiliki performansi yang lebih baik dibandingkan aspect ratio 3. Secara umum, performansi terbaik didapatkan pada Configuration B dengan variasi NACA 4418 aspect ratio 4 dengan sudut pitch 20 deg, dimana nilai Cp yang didapatkan sebesar 0,544 dan nilai TSR berada disekitar 2,3 – 2,7. =================================================================================================== In the Vertical Axis Hydrokinetic Turbine, changes in direction and force on the vertical turbine cause potential system failure and damage due to shaft fracture due to fluctuations in the force that continues to work on the shaft, so further research is carried out using a Hydrokinetic Turbine with Tailting Configuration. In this study, a test was conducted on the effect of different span foil variations on turbine performance with variations in Configuration, geometry, aspect ratio, and angle. In the tests carried out at the Seloliman PLTMH, it was found that the initial velocity of 1.1 m/s decreased in the flow velocity in the range of -20% to -32%, at the initial speed of 1.2 m/s, the flow velocity decreased in the range of -25%. up to -36%., while at a speed of 1.3 m/s the decrease in flow velocity is in the range of -26% to -38%, where the phenomenon of fluid flow that occurs when a Hydrokinetic Turbine with Tailting Configuration is inserted into the channel is High Blockage Near. Surfaces. In Configuration A, the greater the pitch angle, the lower the performance obtained, while in Configuration B the greater the pitch angle, the tendency of performance to increase. In this test, it was also found that the aspect ratio variation 4 has better performance than the aspect ratio 3. In general, the best performance is obtained in Configuration B with variations of NACA 4418 aspect ratio 4 with a angle of 20 degrees, where the Cp value obtained is 0.544 and the value is 0.544. TSR is around 2.3 – 2.7.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Turbin, Hidrokinetik, Tailting, Airfoil, Performansi, Configuration, NACA 0018, NACA 4418, Aspect Ratio, Sudut Pitch, Hydrokinetic, Turbine, Tailting, Airfoil, Performance, Configuration, NACA 0018, NACA 4418, aspect ratio, Pitch Angle.
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General)
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Fuad Azhar Musiran
Date Deposited: 08 Sep 2021 07:20
Last Modified: 08 Sep 2021 07:20
URI: https://repository.its.ac.id/id/eprint/91819

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