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All Journal Jurnal Rekayasa Sipil dan Lingkungan Civil Engineering Journal Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat INTEK: Jurnal Penelitian Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Jurnal Teknik Sumber Daya Air Prosiding Seminar Nasional Teknik Sipil UMS Riset Sains dan Teknologi Kelautan Journal of Muhammadiyah’s Application Technology
Farouk Maricar
Civil Engineering Department, Faculty of Engineering, Hasanuddin University, Makassar
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Public Health Transportation

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Journal : Civil Engineering Journal

 1 
Evaluation of Tidal Energy Potential Using a Two-Way Tidal Energy Model Rusvan, A. Aliffathur; Maricar, Farouk; Thaha, M. Arsyad; Paotonan, Chairul
Civil Engineering Journal Vol 10, No 9 (2024): September
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-09-016

Abstract

Tidal energy is a renewable energy source that provides sustainable energy through the utilization of tidal differences, making it a very promising option. This study examines a more effective tidal energy reservoir model by building a 1:100 scale prototype in the laboratory with several predetermined variations, namely an earthen pond (100, 80, and 60 cm), and flow holes (1.5, 1, and 0.5 cm) with initial tidal height differences of 10 cm, 15 cm, and 20 cm. The model uses a 6-hour time period, which corresponds to a semidiurnal tidal model. The results showed that the highest energy output was 281.84 kWh, achieved with a 1.5 cm flow hole, 20 cm tidal height difference for the initial condition, and 80 cm pond width. For a 1 cm flow hole, the outputs were 1774.8 kWh and 1803.78 kWh for 15 cm and 20 cm tidal height difference for the initial condition with a pond width of 100 cm. Meanwhile, the 0.5 cm flow hole produces potential energy outputs of 2623.8 kWh and 2611.4 kWh for different tidal heights of 15 cm and 20 cm for the initial condition with a pond width of 100 cm. Better model performance can be connected to a mini generator to validate the energy generated from the designed prototype model. Doi: 10.28991/CEJ-2024-010-09-016 Full Text: PDF
Climate Change Impacts on Rainfall Variability and Adaptive Reservoir Operation in a Multi-Reservoir System Leda, Alexander; Tahir Lopa, Rita; Maricar, Farouk; Karamma, Riswal
Civil Engineering Journal Vol. 11 No. 10 (2025): October
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-10-08

Abstract

Changes in rainfall patterns driven by climate change have altered the hydrological regime of river basins, creating substantial challenges for water resources management, particularly in the operation of the Batutegi cascade system comprising the Batutegi Dam, Way Sekampung Dam, Argoguroh Weir, Margatiga Dam and Jabung Weir. This study assesses the impacts of climate change on rainfall intensity, dependable flow, and water allocation modeling within the Sekampung River Basin. The analysis employed five rainfall datasets downscaled from the NASA Earth Exchange Downscaled Climate Projections at 30 arc-seconds (NEX-DCP30) and simulated using five CMIP6 models for both the historical period (1980–2014) and future projections (2024–2100). Results indicate that CMIP6 projections reproduce rainfall patterns reasonably well during January–February and May–July, but perform less consistently in March–April and October–November. Most models tend to overestimate the mean annual rainfall. Rainfall variability contributes to pronounced fluctuations in river discharge, particularly during the dry season. Dependable flows show marked changes, especially within the exceedance probability range of Q10% to Q100%. Although an overall increasing rainfall trend is observed, the system is still able to satisfy water demand under the 2023 operating rules, with potential deficits persisting during critical periods. Optimization modeling further demonstrates the necessity of adaptive reservoir operation rules under climate change, which could improve the reliability of meeting multisectoral demands to approximately 80%. These findings underscore the importance of incorporating climate model projections into watershed-based water resources management to strengthen resilience against extreme hydroclimatic variability.
Co-Authors Agusalim, Agusalim amin, muh nur asri Arsyad Thaha, Muhammad Bambang Bakri Chairul Paotonan Habibudin, Amril Hafid, Hendra Hasyim, Suryadarma K, Riswal. Latif, A. Amin Leda, Alexander Lopa, Rita Tahir Mansida, Amrullah Maricar, Muhammad Farid Masruniwati, Afifah Muhammad Fadly Muhammad Saleh Pallu Mukhsan Putra Hatta, Mukhsan Putra Mustamin, Muhammad Rifaldi Mustari, A. Subhan Nasaruddin Salam, Nasaruddin Pongmanda, Silman Puspita, A. Ildha Dwi Riswal Karamma Rosyidi, Adi Rusvan, A. Aliffathur Supardi Supardi Susanto Putri, Adellina Sahnaz Tahir Lopa, Rita Thaha, M. Arsyad Thaha, Muhammad Arsyad Tungga Dewi, Dwi Juniati