Al Mudzakir, Rizqullah Fawas (2025) Analisis Numerik Energi Gelombang Laut Tipe Oscillating Water Column Terintegrasi Breakwater dengan Modifikasi Chamber Step. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Teknologi Oscillating Water Column (OWC) merupakan metode yang menjanjikan untuk konversi energi gelombang, terutama ketika diintegrasikan dengan struktur pemecah gelombang. Studi ini meneliti pengaruh modifikasi langkah ruang (chamber step) terhadap dinamika aliran udara, distribusi tekanan, dan efisiensi konversi energi melalui simulasi Computational Fluid Dynamics (CFD). Metodologi yang digunakan melibatkan penyelesaian persamaan Navier-Stokes dengan pendekatan Volume of Fluid (VOF) dalam ANSYS Fluent, menggunakan pemodelan multifase dan kondisi batas gelombang yang divalidasi dengan model eksperimental skala 1:4 berdasarkan studi Bingham. Analisis dilakukan terhadap berbagai konfigurasi langkah ruang untuk mengoptimalkan penangkapan energi sekaligus mengurangi penggunaan material dan biaya konstruksi. Hasil penelitian menunjukkan bahwa modifikasi langkah atas meningkatkan efisiensi konversi energi hingga 33,67%, sedangkan desain langkah bawah justru menurunkan kinerja. Analisis aliran udara secara mendetail menunjukkan peningkatan fluktuasi tekanan dan pengendalian turbulensi dalam konfigurasi yang dioptimalkan, sehingga meningkatkan ekstraksi energi. Temuan ini memberikan wawasan penting dalam optimalisasi OWC, menegaskan bahwa geometri ruang memainkan peran krusial dalam konversi energi gelombang. Studi ini berkontribusi terhadap pengembangan solusi energi gelombang yang lebih efisien, hemat biaya, dan dapat diskalakan. Penelitian lanjutan diperlukan untuk mengeksplorasi ketahanan struktur dalam jangka panjang serta kelayakan penerapan dalam skala penuh.
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Oscillating Water Column (OWC) technology is a promising method for wave energy conversion, especially when integrated with breakwater structures. This study investigates the effect of chamber step modification on airflow dynamics, pressure distribution, and energy conversion efficiency through Computational Fluid Dynamics (CFD) simulations. The methodology used involves solving the Navier-Stokes equations with the Volume of Fluid (VOF) approach in ANSYS Fluent, using multiphase modeling and wave boundary conditions validated with a 1:4 scale experimental model based on Bingham's study. Analysis was performed on various chamber step configurations to optimize energy capture while reducing material usage and construction costs. The results show that the upper step modification improves energy conversion efficiency by 33.67%, while the lower step design actually decreases performance. Detailed airflow analysis shows improved pressure fluctuation and turbulence control in the optimized configuration, thereby enhancing energy extraction. These findings provide important insights into OWC optimization, confirming that chamber geometry plays a crucial role in wave energy conversion. This study contributes to the development of more efficient, cost-effective, and scalable wave energy solutions. Further research is needed to explore the long-term resilience of the structure as well as the feasibility of full-scale implementation
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Oscillating Water Column (OWC), integrasi pemecah gelombang, modifikasi chamber steps, konversi energi gelombang, Computational Fluid Dynamics (CFD), Navier-Stokes, Volume of Fluid (VOF) |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38101-(S2) Master Thesis |
| Depositing User: | Rizqullah Fawas Al Mudzakir |
| Date Deposited: | 03 Feb 2025 04:05 |
| Last Modified: | 03 Feb 2025 04:05 |
| URI: | http://repository.its.ac.id/id/eprint/117588 |
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