Timur, Yohanes Pangestu (2021) Analisa Potensi Energi Dari Gerakan Ponton Katamaran Dengan Variasi Bentuk Body Plan Model Simulasi 2d Metode Computational Fluid Dynamic (Cfd). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sumber Daya listrik merupakan salah satu masalah utama yang dihadapi oleh hampir seluruh negara. Indonesia menjadi salah satu negara yang mengonsumsi dan memproduksi batu bara terbesar di dunia dengan konsumsi bertambah 0.6 EJ dan penambahan 1.3 EJ produksi tahun 2020. Sedangkan pertumbuhan penggunaan energi tiap tahun mencapai 4 %. Wilayah laut Indonesia sangat memungkinkan sebagai energi alternatif salah satu sumber energi yang menjanjikan adalah energi gelombang. Teknologi konversi energi gelombang menjadi energi listrik dapat dilakukan dengan sistem bandul. Setiap hantaman gelombang ke ponton akan menggerakan ponton sekaligus bandul setelah itu double-freewheel untuk memutar dinamo untuk menghasilkan listrik. Energi listrik yang dihasilkan sangat bergantung pada olah gerak ponton. Model ponton katamaran belum pernah diterapkan dalam PLTGL-SB ini, sehingga perlu dilakukan simulasi untuk mengetahui seberapa besar olah gerak yang dapat dihasilkan dari model katamaran. Penelitian ini dilakukan untuk menganalisa variasi bentuk ponton untuk menghasilkan olah gerak yang lebih baik. Supaya mendapat variasi yang banyak maka untuk penelitian awal akan dilakukan menggunakan model body plan 2D. Penelitian akan menggunakan simulasi CFD dengan beberapa varias antara lain lebar (3m, 4m, 5m), sarat (0,29m, 0,5m, 0,69m), periode (5s, 11s, 17s) dan tinggi gelombang (0,5m, 1m, 1,5m, 2,0m). Daya terbesar pada penelitian ini dari 108 variasi yang disimulasikan adalah di tinggi globing 2 m, sarat air 0,69 m dan periode 5 detik dengan nilai sebesar 136 watt. Efisiensi tertinggi didapatkan pada Ponton 3 m untuk menyerap daya gelombang. Sedangkan grafik rasio B/T dan Hw/T didapatkan paling konstan berada pada periode 5 detik. Pada RAO respon tertinggi juga terdapat pada periode 5 detik
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Energy resources are one of the main problems faced by almost all countries. Indonesia is a country that consumes and produces the largest coal in the world with an increase of 0.6 EJ and an additional 1.3 EJ of production in 2020. Meanwhile, the growth of energy use every year reaches 4%. Indonesia's sea area is very supportive as alternative energy, one of the promised energy sources is wave energy. The technology of converting wave energy into electrical energy can be done with a pendulum system. Each wave hitting the pontoon will move the pontoon as well as the pendulum, then the double-freewheel will rotate the dynamo to generate electricity. The electrical energy produced is very useful in pontoon motion. The catamaran pontoon model has never been implemented in this PLTGL-SB, so it is necessary to do a simulation to find out how much movement can be generated from the catamaran model. This research was conducted to analyze variations in the shape of the pontoon to produce better movement. In order to get a lot of variation, the initial research will be carried out using a 2D body plan model. This esearch will use CFD simulation with several variations including width (3m, 4m, 5m), draft (0.29m, 0.5m, 0.69m), period (5s, 11s, 17s) and wave height (0.5m, 1m, 1.5m, 2.0m). The greatest power in this study from 108 variations that were simulated was at a wave height of 2 m, draft 0.69 m and a period of 5 seconds with a value of 136 watts. The highest efficiency is obtained on a 3 m pontoon to absorb wave power. While the graph of the ratio of B/T and Hw/T was found to be the most constant in the 5 second period. In RAO, the highest response was also found in the 5 second period
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | daya, gelombang, periode, ponton, sarat, power, wave, period, pontoon, draught |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM761 Stability of ships |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Yohanes Pangestu Timur |
| Date Deposited: | 31 Aug 2021 03:24 |
| Last Modified: | 25 Jul 2024 02:46 |
| URI: | http://repository.its.ac.id/id/eprint/91132 |
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