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All Journal Journal of Science and Applicative Technology Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan
Suciana Suciana
Ocean Engineering Study Program, Faculty Of Infrastructure And Regional Technology, Institut Teknologi Sumatera, Lampung Selatan
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Hydrodynamic numerical investigation and sedimentation, a study cases in Lontar steam-electric power plant Suciana Suciana; Alamsyah Kurniawan
Journal of Science and Applicative Technology Vol 7 No 2 (2023): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v7i2.1451

Abstract

The intake pump of the Lontar steam-electric power plant cannot operate optimally due to a drawdown in the forebay. The capacity of the conveying channel decreases, possibly caused by sedimentation at the intake mouth. So, an initial investigation is required using hydro-oceanographic and sedimentation numerical modeling in that area. Numerical modeling is conducted to simulate flow phenomena to obtain a model and measurement data for qualitative assessment. Hence, the flow condition in the study area is a mix of ocean current and circulating water pump discharge. Hydrodynamic modeling has been successfully conducted to assess their interaction in this zone properly by using open-source software called Delft3D Hydro-morphodynamic. This research uses primary data or field measurement data like bathymetry, sediment, and discharge data for input. Model calibration used tidal and current data. Based on the results of the numerical modeling, it is evident that sediment deposition occurs at the intake mouth area due to the suction of the circulating water pump unit, resulting in sediment being carried and deposited during high water levels and a slowing down of flow rate. Sedimentation issues can addressed through dredging, and for the long-term recommendation to install a breakwater to extend the dredging service life at the intake mouth.
Assessment of Current Energy and Power Generation in the Sunda Strait through Hydrodynamic Modeling with Delft3D and Turbine Evaluation Suciana, Suciana; Elsa Rizkiya Kencana; Rayhan Al-Ghazali; Sumartini
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.45268

Abstract

The rapid population growth in Indonesia has significantly driven up energy demand, creating challenges in meeting these needs due to the declining availability of fossil fuels, the main source of power for most energy plants. Given Indonesia’s geographical position as a maritime nation with nearly six million square kilometers of ocean and over eighty-one thousand kilometers of coastline, the country has immense potential for harnessing ocean currents, waves, and tidal energy to develop renewable energy sources. Exploring these unconventional energy resources is crucial for meeting the country’s future energy demands. One of the most promising locations for Ocean Current Power Plants is the Sunda Strait. This research aims to model the ocean currents in the Sunda Strait, using Delft-3D software to assess its potential for Ocean Current Power plant development. The study also includes initial mapping of high-potential areas for energy production. Results from three observation points Sragi, Rimaubalak, and Sangiang indicate that the waters around Sangiang are most suitable for Ocean Current Power Plants with average currents of 0.86 m/s and a maximum of 4.77 m/s in 2023 also 0.938 m/s with maximum 5.20 m/s in 2024. For energy generation, the Gorlov turbine is particularly effective, producing 10642 kW in 2023 and 21285 kW in 2024, albeit with an efficiency of 36.52%. The Darrieus turbine showed a higher efficiency of 45.05%, though it generated slightly less power. Both turbines are deemed highly viable for further development in the Sunda Strait, offering a significant step toward Indonesia's renewable energy goals.
Co-Authors Alamsyah Kurniawan Elsa Rizkiya Kencana Rayhan Al-Ghazali Sumartini Sumartini