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.
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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) |
|---|---|
| Additional Information: | RTKe 623.812 Put p-1 3100018074948 |
| 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 (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36101-(S2) Master Thesis |
| Depositing User: | erzad iskandar putra |
| Date Deposited: | 03 Apr 2018 02:19 |
| Last Modified: | 04 Sep 2020 04:40 |
| URI: | http://repository.its.ac.id/id/eprint/50422 |
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