Pengembangan Bentuk Lambung Self-Propelled Barge Berdasarkan Performa Hidrodinamika Di Perairan Dangkal

Putra, Erzad Iskandar (2018) Pengembangan Bentuk Lambung Self-Propelled Barge Berdasarkan Performa Hidrodinamika Di Perairan Dangkal. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam pengoperasian SPB di sungai, perlu diperhatikan jarak yang tersisa antara badan kapal dengan dasar sungai. Karena berlayar di perairan dangkal, jarak yang terbentuk tidak terlalu besar terutama pada saat kapal bermuatan penuh. Dangkalnya perairan yang dilayari kapal memberikan efek negatif yaitu bertambahnya hambatan dan menimbulkan efek squat. Dampak terburuk dari efek squat ini adalah kapal mengalami grounding atau kandas. Penelitian ini dilakukan pada desain kapal self-propelled barge (SPB) yang telah dioptimasi menggunakan slender body method. Pengembangan bentuk lambung SPB sebelumnya telah dilakukan oleh Baidowi (2014). Bentuk lambung yang telah dikembangkan sebanyak 27 model lambung. Pengembangan lambung tersebut dilakukan dengan memvariasikan sarat, Cb, dan L/B kapal dengan batasan displasemen antar model tidak lebih dari 0.5%. Dalam penelitian ini, desain tersebut dievaluasi hambatannya di perairan dangkal dengan menggunakan metode computational fluid dynamic (CFD). Analisa squat juga dilakukan terhadap 27 model lambung, di mana perhitungan squat dilakukan berdasarkan hasil perhitungan sinkage dan trim untuk masing-masing model. Perhitungan sinkage dan trim dilakukan berdasarkan data actual yang didapat dari simulasi CFD pada satu jenis fluida. Hasil analisis dan perhitungan menunjukkan bahwa lambung series-19/A2B1C1 memiliki hambatan terendah dan lambung series-3/A1B1C2 memiliki nilai squat yang terkecil. =============================================================================== When a ship moves through shallow water, it has to navigate close to the seabed. The clearance between keel and seabed becomes small when the ship is fully loaded. The shallow water effects the ship navigating through the restricted waters. These effects cause errors in maneuvering which can lead to grounding or collision. Any ship (regardless of its size) navigating through restricted waterways is heavily affected by hydrodynamic effects. Ship resistance will increase and squat effect can occur while ship navigating through shallow water. The objective of this study is to investigate the resistance and squat effect of self propelled barge in shallow water using Computational Fluid Dynamics (CFD). This study is a continuation research of self propelled barge hull development from a ship resistance point of view (Baidowi et al., 2015). The previous research shown the development of three parent-hull form, type-A, type-B, and type-C based on Coefficient Block (CB) ratio L/B, and draught. The results are 27 variations of hull form from each type. Based on CFD simulation in shallow water, the hull form type- B series-19/A2B1C1 gives the lowest resistance. The squat effect was calculated by using pressure distribution which is generated by CFD simulation. The result is hull form series-3/A1B1C2 shown the lowest squat effect in shallow water.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Self-Propelled Barge, Perairan Dangkal, SQUAT effect, CFD
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics
Divisions: Faculty of Marine Technology > Naval Architecture and Shipbuilding Engineering > (S2) Master Theses
Depositing User: erzad iskandar putra
Date Deposited: 03 Apr 2018 02:19
Last Modified: 09 May 2018 06:50
URI: http://repository.its.ac.id/id/eprint/50422

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