Arifiansyah, Asraf (2024) Studi Eksperimen Pengaruh Konfigurasi Posisi Vortex Generator Terhadap Lift & Drag Coefficient Model Naca 634-021 Foil Untuk Ocean Current Turbine. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Konsumsi energi oleh masyarakat kian meningkat tiap tahun, berdasarkan data kinerja ESDM (2023) penggunaan listrik masyarakat Indonesia tahun 2022 meningkat sebesar 50 kWh dari tahun sebelumnya. Pasar energi global merespon dengan ramainya tren EBT, ditunjang peningkatan kapasitas volume EBT di tahun 2021 meningkat 17% dari tahun sebelumnya. Berbanding terbalik dengan kondisi indonesia yang masih bergantung pada bahan bakar fosil, hanya 17% dari seluruh pembangkit listrik yang menggunakan EBT. Kementerian ESDM (2023) menyatakan potensi energi dari sumber air di Indonesia cukup besar yakni di angka 6808 MegaWatt. Penelitian terkait Turbin arus laut banyak dilakukan untuk memanfaatkan potensi maksimal dari sumber daya alam melalui peningkatan efisiensi pada teknologi. Penelitian ini melibatkan praktik (eksperimen) pada hydrofoil model NACA 634-021, memperkenalkan Vortex Generator sebagai komponen tambahan dengan hipotesa awal dapat meningkatkan nilai gaya angkat(lift) serta gaya hambat(drag) milik hydrofoil. Praktik eksperimen bertempat di Lab Aerodinamik Politeknik Penerbangan Surabaya menggunakan Wind Tunnel dengan Test-Section berukuran 600x600 mm. Model foil NACA 634-021 dicetak menggunakan bahan filamen 3Dprint dengan Aspect Ratio 2:1. Pengukuran menggunakan instrumentasi buatan berupa Loadcell dan fokus pengujian untuk melihat perubahan nilai koefisien angkat (lift) & hambat (drag) dari sudut serang 0 hingga 180 pada Reynolds Number 1,8x10^5. Vortex Generator berbahan resin 3Dprint dengan variabel dasar h=0,41δ ; β=20 ; L=3,2h ; x=0,083c dan d=0,5D diuji untuk meninjau performa foil, dengan variasi nilai D=9,6h merupakan desain optimum dimana mengakibatkan peningkatan koefisien angkat sebesar 74% dari orisinal foil terjadi pada sudut serang 250 dan penurunan nilai Koefisien hambat sebesar 30% terjadi pada sudut 130.
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Consumption of Energy is increasing every year. According to the data of Ministry of Energy and Mineral Resources Indonesia (2023), the electricity consumption in Indonesia increased by 50 kWh in 2022 compared to the previous year. The global energy market is responding to the growing trend of renewable energy sources (RE), supported by a 17% increase in RE capacity in 2021 compared to the previous year. This is in contrast to Indonesia's condition, which still relies heavily on fossil fuels, with only 17% of the total power generation using RE. The Ministry of Energy and Mineral Resources (2023) states that the energy potential from water sources in Indonesia is significant, estimated at 6808 MegaWatts. Research related to underwater turbines is being conducted to harness the maximum potential of natural resources through efficiency improvements in technology. This research involves practical experimentation on the NACA 634-021 hydrofoil model, introducing Vortex Generators as additional components with the initial hypothesis of increasing the lift and drag forces of the hydrofoil. The experimental practice took place in the Aerodynamics Lab of Surabaya Aviation Polytechnic, using a Wind Tunnel with a test section measuring 600x600 mm. The NACA 634 021 foil model was 3D printed using filament material with an aspect ratio of 2:1. Measurement were taken using customade instrumentation, Load cells, with the testing focus on observing changes in the lift and drag coefficient values from angles of attack ranging from 0 to 180 degrees at a Reynolds Number of 1.8x10^5. Vortex Generator made from 3Dprint resin with basic variables h=0.41δ; β=200 ; L=3.2h ; x=0.083c and d=0.5D were tested to review the performance of the foil, with a variation of the value D=9.6h which was the optimum design which resulted in an increase in the lift coefficient of 74% from the original foil at an angle of attack of 250 and a decrease in the drag coefficient value of 30% occurs at an angle of 1300.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Hydrofoil, NACA 634-021, Vortex Generator, Koefisien angkat dan hambat |
| Subjects: | Q Science > QC Physics > QC151 Fluid dynamics |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Asraf Arifiansyah |
| Date Deposited: | 06 Feb 2024 03:11 |
| Last Modified: | 06 Feb 2024 03:11 |
| URI: | http://repository.its.ac.id/id/eprint/106263 |
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