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All Journal Jurnal Teknologi Rekayasa Mesin IJOCE (International Journal of Offshore and Coastal Engineering)
Samuel Samuel
Universitas Diponegoro
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Mechanical Engineering

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ANALISA HAMBATAN TOTAL KARENA PERUBAHAN BENTUK CHINE PADA KAPAL PATROLI Muhammad Satrio Elang Prakoso; Samuel Samuel
Jurnal Teknologi Vol 14, No 1 (2022): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.14.1.47-54

Abstract

A patrol ship is a fast ship planning hull type. The planning hull type is a ship designed to reduce wetted surface area at a certain speed to reduce the ship's total resistance. The main function of chine on fast boats is to reduce the hull's wetted surface. Modification of the chine shape can improve the performance of the ship while operating. This research will analyze the effect of using modified chine to improve ship performance. This research uses a numerical method (CFD) which is an overset mesh technique. This method is used to predict the resistance, trim, and heave. The result of CFD simulation in this research indicates that the use of chine can improve total resistance on ships, namely the single chine 10° model. The use of chines on patrol ships can increase trim and heave values.
STUDI PERANCANGAN KAPAL FERRY RO-RO MODEL KATAMARAN DI PERAIRAN DANAU TOBA Samuel Samuel; Binart Reynaldo Pardosi
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.1085

Abstract

Samosir is an island in North Sumatra which is used as a tourist destination because of the beauty of its lake. Crossing to the island of Samosir requires a ship as sea transportation. Based on data from the Ministry of Transportation, Ajibata Port, the process of crossing vehicles on holidays has been delayed due to a surge in passengers during the high season. The purpose of this research is to design/plan a ship to overcome the accumulation of the number of vehicles in the high season. The method used is the comparison ship method. The number of comparison ships is ten ships of the same type and has met the design criteria as a reference in determining the main size of the new ship. Determination of resistance on this catamaran ferry using the Computational Fluid Dynamics (CFD) method. The way CFD works is using the Navier-Stokes equation to describe the turbulence model with k-ε using multiphase water and air flows. The stability analysis was based on the conditions of the four different compartments following the IMO requirements. The motion analysis was based on the wave height on Lake Toba following the 1987 NORDFORSK rules. The results of the ro-ro ferry design resulted in the main dimensions of the LPP being 49.26 m long, 14.32 m wide, 2.4 m laden, and 4 m high. 9 m, Cb demihull 0.54 and a speed of 11 knots. The resistance value generated using CFD simulation is 68.8 KN. Based on the resistance value, two main engines of 253.3 HP are used.
Post-Pandemic Risk Assessment and Safety Management at Academic Institution Environment Santi Frestiqauli; Nafisa Nandalianadhira; Mochammad Fathurridho Hermanto; Samuel Samuel
International Journal of Offshore and Coastal Engineering Vol. 7 No. 2 (2023)
Publisher : Department of Ocean Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25800914.v7i2.2367

Abstract

The World Health Organization (WHO), on March 11, 2020, declared the novel coronavirus (COVID-19) outbreak a global pandemic. Safety, people protection, equipment and environmental protection are serious concerns anywhere, including in an institution or university environment. In the meantime, the number of accidents has increased in academic institutions nationwide. Students, staff, lecturers, and academic personnel are involved in activities that expose them to minor to major fatal accidents. This study developed risk assessment using combinations of hazards and risk factors to scale measures in a risk reduction action plan. Health, safety and environment risk assessment conducted for 27 assessed hazardous activities at 18 locations divided into three areas: laboratories, public facilities, and offices at the Department Ocean Engineering Sepuluh Nopember Institute of Technology. The frequency and severity of health hazards were higher in accumulation number, which is 790, compared to safety hazards, which score 509, and environmental hazards, with 104. The highest number for accumulation of potential hazards in health, safety, and environment for laboratories area is 883, followed by accumulation of potential hazard at health, safety, and environment for office area and public facilities area with scores 239 and 281.
Co-Authors Binart Reynaldo Pardosi Mochammad Fathurridho Hermanto Muhammad Satrio Elang Prakoso Nafisa Nandalianadhira Santi Frestiqauli