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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Teknik ITS INOVTEK POLBENG Wave: Jurnal Ilmiah Teknologi Maritim International Journal of Marine Engineering Innovation and Research Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Jurnal Pengabdian kepada Masyarakat Maritime Park: Journal Of Maritime Technology and Socienty AMMA : Jurnal Pengabdian Masyarakat Jurnal Riset & Teknologi Terapan Kemaritiman Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Samsu Dlukha N
Institut Teknologi Kalimantan
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THE SIMULATION OF SKEG EFFECT TO BARGE RESISTANCE CALCULATION USING CFD-RANS OPENFOAM Hasmi, Abrari Noor; Nurcholik, Samsu Dlukha
Wave: Jurnal Ilmiah Teknologi Maritim Vol 14, No 1 (2020)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.456 KB) | DOI: 10.29122/jurnalwave.v14i1.3952

Abstract

The paper discusses the significance of different types of skegs in a barge toward the pressure, fluid velocity and the ship?s total resistance. There are three kinds of skeg configurations: barge without skegs, skegs without deflection, and skegs with deflection. The barge was towed with forward speed were ranging across 3 knots ? 9 knots. The simulations were conducted using an open-source RANS (Reynold Averaged Numerical Simulation) CFD code Open-FOAM. The simulations show that the skegs raise the barge?s resistance. The skegs with deflection have a bigger resistance amplification compared to skegs without deflection.
Analysis of Fatigue Life of Tugboat Towing Hook Construction Using Finite Element Method Adnyani, Luh Putri; Arsyad, Muhammad Abid Mapariorio; Nurcholik, Samsu Dlukha
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 17, No 2 (2020): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v17i2.29587

Abstract

The towing hook on the tugboat has a function to pull the barge. Because of this ability, a good towing hook construction is needed to work optimally. Indications for the good construction is the value of fatigue life, which is more than the value of design life of 20 years. A towing hook detail on tugboat from PT. Asia Aditama Shipyard – Balikpapan was selected as an example. This study aims to obtain the value of fatigue life based on the total resistance calculated by BHP data in full, 75%, and 50% of the total displacement volume and estimate the maximum size of a barge, based on maximal towing pull capacity. The benefits of this research are providing information about the fatigue life of a towing hook, analyzing several possible load cases, and giving the recommendation of the maximum principal dimensions of the barge that the towing hook can be pulled. The method used in this study is the finite element method using ANSYS, the fatigue life calculation approach is the Palmgren–Miner cumulative damage method and refers to the DNVGL rule. The results of the calculation of fatigue life in the maximum towing pull condition are 22 years, 22 years, and 23 years at 100%, 75%, and 50%, respectively. The main size of barges that can be towed by Tugboats under maximum towing pull conditions are LOA = 147m, LWL = 144,529m, B = 35m, H = 13m, T = 11m.
The Strength and Fatigue Life analysis of Sedan Car Ramp of The Ferry Ro-Ro 5000 GT Using Finite Element Method Alamsyah, Alamsyah; Nurcholik, Samsu Dlukha; Suardi, Suardi; Pawarah, M U; Jumalia, Jumalia
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i2.37518

Abstract

The Ferry Ro-Ro 5000GT has three levels of car deck that are connected by internal ramps. Two issues that have to be paid attention during the operation of the internal ramp there are the strength capacity and the design fatigue life of the internal ramp structure. The purpose of the research is to determine the strength and fatigue life of the internal ramp construction. The method used the Finite Element Method using a static load by load case of point load at top girder and between girders. Results of the research detected the maximum stress value is in the load case of the point load (three sedan car) at between of the girder is 52.143 MPa with the fatigue life is 44.47 years with the load cycle is 7300000 cycle while the minimum stress value detected at the load case of the point load (two sedan cars) at top girder is 34.199 MPa with the fatigue life is 195.92 years with the load cycle is 50000000 cycle. For the safety factor, ramp construction 6.08 ~ 10.38. The safety factor value above is still in safe condition because the value is SF > 1.
Studi Experimental Penggunaan Venturi Scrubber dan Cyclonic Separator Untuk Meningkatkan Kinerja pada Sistem Exhaust Gas Recirculation (EGR) dalam Menurunkan NOX pada Motor Diesel Samsu Dlukha N; I Made Ariana; Aguk Z. M. Fathallah
Jurnal Teknik ITS Vol 1, No 1 (2012)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.111 KB) | DOI: 10.12962/j23373539.v1i1.2010

Abstract

Salah satu cara yang efektif untuk mengurangi NOX adalah dengan menggunakan metode Exhaust Gas Recirculation (EGR). Dengan metode EGR, oksigen yang masuk ke ruang bakar akan berkurang sehingga NOX dapat diturunkan dengan signifikan, akan tetapi power dari mesin tersebut juga akan berkurang dan Particulate Matter (PM) akan naik secara signifikan. Dalam penelitian ini dibahas penggunaan EGR yang telah di optimalkan dengan penambahan venturi scrubber dan cyclonic separator, tujuannya mengurangi NOX tanpa meningkatkan PM. Hasil pengujian menunjukkan NOX turun sebesar 48.89% dan PM turun dari 69,87%  menjadi 9.87%.
THE SIMULATION OF SKEG EFFECT TO BARGE RESISTANCE CALCULATION USING CFD-RANS OPENFOAM Abrari Noor Hasmi; Samsu Dlukha Nurcholik
Wave: Jurnal Ilmiah Teknologi Maritim Vol. 14 No. 1 (2020)
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jurnalwave.v14i1.3952

Abstract

The paper discusses the significance of different types of skegs in a barge toward the pressure, fluid velocity and the ship’s total resistance. There are three kinds of skeg configurations: barge without skegs, skegs without deflection, and skegs with deflection. The barge was towed with forward speed were ranging across 3 knots – 9 knots. The simulations were conducted using an open-source RANS (Reynold Averaged Numerical Simulation) CFD code Open-FOAM. The simulations show that the skegs raise the barge’s resistance. The skegs with deflection have a bigger resistance amplification compared to skegs without deflection.
Tinjauan Hambatan pada Rancangan Kapal Tongkang Tanpa Awak Menggunakan Metode Computational Fluid Dynamics - OpenFOAM Abrari Noor Hasmi; Samsu Dlukha Nurcholik; Muhammad Budi Prasetyo; Alamsyah Alamsyah; Thorikul Huda
INOVTEK POLBENG Vol 9, No 2 (2019): INOVTEK VOL.9 NO 2 - 2019
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.786 KB) | DOI: 10.35314/ip.v9i2.1151

Abstract

Di Indonesia, proses pengiriman batubara dengan kapal tongkang banyak dijumpai karena kemudahan aksesnya dimana kapal tongkang memiliki sarat air (draft) yang lebih kecil dibandingkan dengan jenis kapal lain. Penelitian ini mencoba menentukan hambatan pada kapal tanpa awak berbentuk kapal tongkang untuk beberapa kecepatan menggunakan metode CFD dengan program OpenFOAM. Metode ini mendiskritisasi persamaan Navier Stokes dengan menggunakan pendekatan metode volume hingga. Kapal tongkang digambar menggunakan perangkat lunak Maxsurf modeler sebelum diintegrasikan kedalam program CFD. Diskritisasi dilakukan dengan memastikan area sekitar lambung kapal terdiskritisasi cukup rapat. Hasil penelitian menunjukan bahwa Hambatan pada kapal tongkang berkisar antara 39.39kN-227.963kN untuk kecepatan 3-9knot.
Motion Response on The Water Ambulance Ship Alamsyah Alamsyah; Ardhi Hidayatullah; Suardi Suardi; Wira Setiawan; Habibi Habibi; Samsu Dlukha Nurcholik
International Journal of Marine Engineering Innovation and Research Vol 8, No 1 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i1.15481

Abstract

In designing a ship, it is necessary to know the response of the ship's motion before sailing. The purpose of this research is to determine the ship's motion response to waves as well as ship speed in ship loading operational conditions. The method used in this study is the B-spiline mathematical equation and the strip theory method, with the help of ship motion software, which varies the ship's load by 100% DWT, 50% DWT, and 25% DWT. While the highest significant amplitude heave value occurs on a ship with 100% DWT conditions with a speed of 18 knots and a wave direction of 900, which is 2.70 meters, the highest significant value of amplitude pitch occurs on a ship with a condition of 25% DWT with a speed of 6 knots and a wave arrival direction of 1800, namely 1.10 degrees, and the highest significant value of roll amplitude occurs in ships with 25% DWT conditions with speeds of 18 knots with a wave arrival direction of 900, which is 3.42 deg. The research results detected at a speed of 18 knots for the significant amplitude heave value, the significant amplitude pitch value, and the maximum RAO value still meet the Nordforsk criteria.
Testing the Inclination of an Industrial Diesel Engine Under Static Conditions According to the International Convention for the Safety of Life at Sea (SOLAS) Regulations suardi suardi; Muhdar Tasrief; Samsu Dlukha Nurcholik; Amalia Ika Wulandari; Wira Setiawan
International Journal of Marine Engineering Innovation and Research Vol 8, No 1 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i1.15749

Abstract

many industrial diesel engines are used as the main engine of the ship. Apart from being relatively cheaper, the availability of industrial engine is also very abundant, and the repair process is also not too complicated. However, when viewed from the SOLAS regulations related to the main requirements for a ship propulsion engine, it must also be considered, because it operates at sea, so that ship engines must be tougher than industrial engines, especially related to engine performance when experiencing rolling and trim. The purpose of this research is to test the feasibility of industrial diesel engines being operated on ships. By using a water-cooled single-cylinder diesel engine which is commonly used in small ships. The experimental method was used in this research to obtain optimal results according to the conditions in the field, the engine was made in three variations, namely the normal condition (without inclination angle), the rolling condition of 150, and the trim condition of 50 which complies with SOLAS regulations related to the inclination angle. The results of the research obtained torque, Specific Fuel Consumption (SFC), and engine thermal efficiency in various engine variations. The highest torque is in the condition of the 150 rolling engine, which is 13.87 N.m. The lowest SFC is in the condition of the 150 rolling engine, which is 194 gr/kW.h. and the highest thermal efficiency was also obtained at the condition of the 150 rolling engine, namely 44.9%. The higher the engine speed, the higher the engine performance value in rolling 150 conditions, and the 50 trim conditions experience an increasing trend, but in low rotation conditions (750 Rpm) the performance decreases. Seeing the results obtained, a water-cooled single-cylinder diesel engine can be used as a small boat propulsion engine.
Freeboard and Trim Measurement: a Case Study of Landing Craft Tank Conversion to Ship Power Plan Suardi Suardi; Wira Setiawan; Samsu Dlukha Nurcholiq; Alamsyah Alamsyah; Andi Mursid Nugraha Arifuddin; Amalia Ika Wulandari; Muhammad Uswah Pawara
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 5, Number 1, March 2024 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.v5i1.27886

Abstract

In this research, the ship power plan which is the result of a conversion from a landing craft tank is designed to meet the electricity needs in areas affected by a disaster or electricity crisis. So far, the government has chartered a similar ship from Turkey which is used to meet electricity needs in Indonesian areas which have been affected by the disaster and electricity crisis. This ship is modified to carry an electric generator which can later be sent to areas that need it. Two main focuses are the goal of this research, the first is to find the value of the freeboard and the second is the trim of the ship after the redesign. To achieve this goal, in this study a numerical calculation method was used to calculate the freeboard and trim values according to applicable standards. The results of the analysis show that the freeboard value is still safe, with the actual freeboard value being greater than the required freeboard (0.8 m > 0.44 m). For ship trim, the bow trim condition is obtained with a smaller LCG-LCB difference than the 0.05% LPP value (0.912 < 0.923). By looking at the results of these measurements, the condition of the ship's freeboard and trim is still in a fairly good category even though it has been converted from a landing craft tank to a ship power plant. This study can provide a reference for ship design before converting the actual ship so that it can carry out trim and freeboard tests to prevent build failures.
Comparative Analysis of Installed and Actual Pump Power in Bilge and Ballast Systems: Study Case on 60 m Buoy Laying Vessel Rodlian Jamal Ikhwani; Nurcholik, Samsu Dlukha; Saputra, Muhammad Rizky; Hidayat, Taufik; Syahab, Husein
Indonesian Journal of Maritime Technology Vol. 2 No. 1 (2024): Volume 2 Issue 1, June 2024
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v2i1.1198

Abstract

The piping system of a ship is an essential system that is crucial for the ship's operation. An example of tasks related to the ship's piping system is the design of the system itself. When designing a piping system, certain assumptions are made in calculating the pump power. As a result, the installed pump power is often greater than the actual pump power needed. In this thesis, the actual pump power in the bilge and ballast piping system of a 60 m buoy laying vessel needs to be analyzed. To achieve this, comprehensive and detailed data collection of the piping system is required. Then, the piping system must be drawn in full detail using 3D software to match the actual installation of the piping system. After that, the actual pump power for the piping system can be calculated. The calculated pump power is 5.79 kW, with the pump specifications being an centrifugal pump model with an output of 7.5 kW, chosen due to selecting a pump power approximately 16% lesser than the existing power.
Co-Authors Abrari Noor Hasmi Aguk Z. M. Fathallah Alamsyah Alamsyah Alamsyah Alamsyah Alamsyah Alamsyah Amalia Ika Wulandari Amalia Ika Wulandari Andi Mursid Nugraha Arifuddin Andi Trimulyono Ardhi Hidayatullah Arifuddin, Andi Mursid Nugraha Arsyad, Muhammad Abid Mapariorio Atha Alfarrasi Awali , Jatmoko Destyariani Liana Putri Dian Aulia Hidayati Chardiwan Fahmi Ramadhan Habibi Habibi Hasiholan Lumban Tobing, Kevin Hasmi, Abrari Noor Hasrina Huda, Abiyani Choirul I Made Ariana Ikhwani, Rodlian Jamal Jeriko Silalahi Jumalia, Jumalia Kurniawati, Diniar Mungil Kusuma, Andhi Indira Luh Putri adnyani Luh Putri Adnyani M. Uswah Pawara Manik, Aljoiden Martinus Mohammad Alifiyan Hakiki Muhammad Alif Muhaimin Muhammad Budi Prasetyo Muhammad Zubair Muis Alie Muhdar Tasrief Mungil Kurniawati, Diniar Putri, Destyariani Putri, Destyariani Liana Riza Abdillah rizianiza, illa Rodlian Jamal Ikhwani Rohimsyah, Fikan Mubarok S.Pd. M Kes I Ketut Sudiana . Saadiyah, Devy Setiorini Saputra, Muhammad Rizky Suardi Suardi Suardi Suci, Indah Melati Syadzali, Abdul Mujib Syahab, Husein Taufik Hidayat Taufik Hidayat Thorikul Huda Tobing, Andreyano Yosefan Lumban Wahyuda, Wahyuda Wira Setiawan Wira Setiawan