Edy, Raden Arya Maretano and Maretano Edy, Raden Arya and Maretano Edy, Raden Arya and Maretano Edy, Raden Arya (2026) Tinjauan Desain Struktur Pelampung Pada Pembangkit Listrik Tenaga Gelombang Tipe Point Absorber Menggunakan Metode Simulasi Numerik Untuk Studi Kasus Perairan Tambakrejo, Blitar. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Indonesia memiliki potensi energi gelombang laut yang besar, khususnya di wilayah pesisir selatan Jawa yang berhadapan langsung dengan Samudra Hindia. Salah satu teknologi yang berpotensi dikembangkan untuk memanfaatkan energi tersebut adalah Point Absorber Wave Energy Converter (PA-WEC). Penelitian ini bertujuan untuk menganalisis performa hidrodinamika pembangkit listrik tenaga gelombang laut (PLTGL) tipe point absorber dengan geometri pelampung balok (cuboid) pada kondisi gelombang yang merepresentasikan karakteristik perairan Tambakrejo, Blitar. Analisis dilakukan menggunakan metode Computational Fluid Dynamics (CFD) berbasis Smoothed Particle Hydrodynamics (SPH) melalui perangkat lunak DualSPHysics. Model numerik divalidasi menggunakan data eksperimen dari penelitian terdahulu dan menunjukkan tingkat kesesuaian yang baik dengan nilai Root Mean Square Error (RMSE) sebesar 0,0073 m atau 5,78% untuk respons gerak heave. Simulasi dilakukan dengan variasi periode gelombang 3 s, 3,5 s, dan 4 s, serta variasi kondisi kedalaman perairan yang merepresentasikan pasang (0,78 m), Mean Sea Level (MSL) sebesar 0,695 m, dan surut (0,61 m). Sistem Power Take-Off (PTO) tidak dimodelkan secara rinci, melainkan direpresentasikan menggunakan pendekatan redaman ekuivalen untuk menggambarkan proses penyerapan energi. Hasil penelitian menunjukkan bahwa periode gelombang memberikan pengaruh yang signifikan terhadap respons daya perangkat, di mana periode gelombang 4 s menghasilkan respons daya sesaat terbesar dengan nilai puncak mencapai sekitar 60 W, lebih tinggi dibandingkan periode 3 s dan 3,5 s. Variasi kedalaman perairan juga memengaruhi performa perangkat, dengan kondisi MSL menghasilkan respons daya terbesar dibandingkan kondisi pasang maupun surut. Temuan ini menunjukkan bahwa karakteristik gelombang dan kedalaman perairan merupakan parameter penting yang memengaruhi kinerja PLTGL tipe point absorber. Hasil penelitian diharapkan dapat menjadi referensi dalam pengembangan teknologi energi gelombang laut yang sesuai dengan karakteristik perairan Indonesia, khususnya di wilayah pesisir selatan Jawa.
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Indonesia has significant ocean wave energy potential, particularly along the southern coast of Java, which is directly exposed to the Indian Ocean. One of the promising technologies for harnessing this renewable energy resource is the Point Absorber Wave Energy Converter (PA-WEC). This study aims to analyze the hydrodynamic performance of a point absorber wave energy converter employing a cuboid buoy geometry under wave conditions representing the characteristics of Tambakrejo waters, Blitar. The analysis was conducted using a Computational Fluid Dynamics (CFD) approach based on the Smoothed Particle Hydrodynamics (SPH) method implemented in DualSPHysics. The numerical model was validated against experimental data from previous research and demonstrated good agreement, with a Root Mean Square Error (RMSE) of 0.0073 m or 5.78% for the heave response. Simulations were performed for wave periods of 3 s, 3.5 s, and 4 s, as well as for different water depth conditions representing high tide (0.78 m), Mean Sea Level (MSL) of 0.695 m, and low tide (0.61 m). The Power Take-Off (PTO) system was not modeled in detail but was represented using an equivalent damping approach to characterize the energy extraction process. The results indicate that wave period significantly affects the power response of the device, with the 4 s wave period producing the highest instantaneous power response, reaching approximately 60 W, which is greater than those obtained for the 3 s and 3.5 s wave periods. Water depth variation also influences device performance, with the MSL condition generating the highest power response compared to the high-tide and low-tide conditions. These findings demonstrate that wave characteristics and water depth are important parameters affecting the performance of point absorber wave energy converters. The results of this study are expected to serve as a reference for the development of wave energy conversion technologies suitable for Indonesian coastal waters, particularly along the southern coast of Java.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Pembangkit Listrik Tenaga Gelombang, Point Absorber, DualSPHysics,Wave Energy Converter, Point Absorber, DualSPHysics |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Raden Arya Maretano Edy |
| Date Deposited: | 15 Jul 2026 08:24 |
| Last Modified: | 15 Jul 2026 08:24 |
| URI: | http://repository.its.ac.id/id/eprint/135073 |
Available Versions of this Item
- Tinjauan Desain Struktur Pelampung Pada Pembangkit Listrik Tenaga Gelombang Tipe Point Absorber Menggunakan Metode Simulasi Numerik Untuk Studi Kasus Perairan Tambakrejo, Blitar. (deposited 15 Jul 2026 08:24) [Currently Displayed]
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