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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Kelautan : Indonesian Journal of Marine Science and Technology ROTOR: JURNAL ILMIAH TEKNIK MESIN INOVTEK POLBENG International Journal of Marine Engineering Innovation and Research Saintara : Jurnal Ilmiah Ilmu-Ilmu Maritim Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Jurnal Jalasena SinarFe7
Arif Winarno
Department Of Marine Engineering Universitas Hang Tuah, Surabaya, Indonesia
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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The Effect of Tip Clearance Kaplan Ducted Propeller in Offshore Supply Vessel (OSV) on Hydrodynamics Winarno, Arif; Sakti, Gedhe Angkoso Nur Sofa; Sugianto, Erik
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 21, No 3 (2024): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v21i3.64772

Abstract

A ducted propeller is a modification of a propeller by adding a duct or nozzle. The purpose of using a ducted propeller is to increase thrust, increase propeller efficiency, and encourage better ship movement. This is suitable for Offshore Supply Vessel (OSV) vessels operating on offshore platforms to support oil drilling activities. In designing a kort nozzle, one of the most important components is the tip clearance, the distance between the edge of the propeller and the inner nozzle. The diameter of the kort nozzle can affect the thrust efficiency of the propeller. Due to the blade momentum theory for ducted propellers, the volume of water passing through the propeller should be as large as possible, with the smallest possible flow velocity. In this study, numerical simulations using the Computational Fluid Dynamics (CFD) method were carried out to determine the effect of tip clearance on thrust and torque on a ducted propeller with a MARIN foil 19A nozzle type and tip clearance of 10 mm, 20 mm, and 30 mm. From all models, the highest thrust and torque values were obtained from the nozzle 19A tip clearance 10 mm model with thrust 367,413 kN and torque 315,338 kNm. The relationship between tip clearance and thrust is inversely proportional; the greater the tip clearance, the smaller the value of thrust, and the same is true with torque.
Pengaruh Penerapan Energy Saving Device (ESD) Kort Nozzle untuk Meningkatkan Gaya Dorong Propeller pada Kapal Ikan Purse Seine Januar, Alfian T.; Winarno, Arif
Saintara: Jurnal Ilmiah Ilmu-Ilmu Maritim Vol 7 No 1 (2023): SAINTARA (Maret 2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Akademi Maritim Nusantara Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52475/saintara.v7i1.199

Abstract

An important aspect that needs to be considered in an effort to reduce the use of fuel on a ship is the planning of the ship's propulsion components (propulsor). The propulsion of traditional fishing boats in the Mayangan Probolinggo area is usually based only on market readiness and compatibility with the boat shaft used, without regard to the drag and thrust factors produced by the boat. So it is suspected that there are many deficiencies, especially in terms of thru). Efforts to increase the thrust of the ship can be done by installing a tool in the form of a cort nozzle called an Energy Saving Device (ESD) on the propeller. In this research, we will examine the selection of the Kort nozzle and analyze the model in order to obtain the shape of the Kort nozzle which can increase thrust on purse seine fishing vessels with variations in selecting the type of Kort nozzle using the Kort nozzle Shuskin type B, Shushkin type C and Kort nozzle. type 37. Analysis was carried out by simulation method using Computational Fluid Dynamic (CFD) software. The simulation results of fluid dynamic (fluent) computing software show that each model of the ship with the cort nozzle being analyzed experiences an increase in thrust from the application of the cort nozzle. The highest thrust value occurred on ships with Kort nozzle 37 of 8.1468 kN, while for ships with Kort nozzle Shuskin type B of 8.0102 kN. For the lowest thrust value on a ship with a Shuskin nozzle cort type C with a value of 7.8741 kN. So it was concluded that from several variations of the ship found on the ship model with a nozzle 37, the most optimal thrust was obtained. because the thrust force increased 16.1%.
Co-Authors Ahmad Nur Hasim Alfiyan Edlyn Criptosan Gilang Andika Putra Hadi Prasutiyon Hadi Prasutiyon Horng Chen, Jeng Januar, Alfian T. M. Taufiqurrohman Muhammad Alif Ridha Hermawan Muhammad Anggara Pratama Muhammad Khasroni Hamsah Ratna Indriyani Sakti, Gedhe Angkoso Nur Sofa Semin Semin Sugianto, Erik Sulthon Rasidi Toto Soeharmono