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Gafur Abdul
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Engineering Mechanical Engineering

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Journal : Proceedings Conference on Marine Engineering and its Application

 1 
Analisa Pengaruh Bulbous Bow terhadap Tahanan Kapal dan Konsumsi Bahan Bakar pada Kapal Perintis 2000 GT Maruto Prijono Agil; Antoko Bambang; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.631

Abstract

One to improve the performance of the ship is change the optimal shape of bow and stern, so thatship resistance can be reduced. Many studies discuss innovations hull shape in order to get the optimaldesign, in order to obtain the hull shape especially the bow shape that has the smallest value of totalresistance. Therefore, this study will discuss the design of the bulbous bow at coaster ship 2000 GT withsome variety of bulbous bow shape and calculation of resistance and fuel consumption aimed to obtainingthe bow shape with the smallest total resistance value and efficient fuel consumption. 3D modeling of bowand calculation of ship resistance using Maxsurf Software. Variations of bulbous bow design that have beenmodeled there are 3 models of bulbous bow type Δ, bulbous bow type O, and bulbous bow type V. Theresults of the resistance calculation on the coaster ship 2000 GT without bulbous bow using the maxsurfsoftware obtained for 186.6 kN, ship resistance value on bulbous bow shape Δ obtained 144.4 kN, andvariation of bulbous bow type V has the highest ship resistance value of 153.9 kN. Furthermore, thecalculation of fuel consumption on the coaster ship 2000 GT obtained results of 49.884 tons, variation ofbulbous bow type Δ of 40,79 tons, variations of type O bulbous bow of 42.79 tons, and variation of bulbousbow type V at 45.86 tons.
Kajian Numerik Tata Letak ventilator Ruang Kamar Mesin Di Kapal Coaster 2000 GT Prasetyo Nugroho Agung; Muhadi Eko Prayitno Muhammad; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.639

Abstract

HVAC (Heat Ventilation & Air Conditioning) is it most important for the vessel. Engine room is very important part from the vessel. Because there are have main engine as engine driven and auxiliary engine as complement for the systems. From Biro Klasifikasi Indonesia rules said : if must be 45 ⁰C for every vessel’s ventilation at engine room. Design at engine room must be know how efficients of ducting’s design and how about heat distribution of every part at engine room, and this design can help for air change from exhaust air and keep air distribution to be constant. From this experients we are know if the temperature at ME Room is 47 ⁰C (exceed from BKI’s standart) and 36 ⁰C at AE Room. So, we need to redesign for this condition. From the result we are know if recondition at ME Room change to be 39 ⁰C. ventilation air position and ducting track design very important to get velocity air distribution who intake in engine room and keep the temperature to be constant (not exceed 45 ⁰C).
ANALISA KEKUATAN MEMANJANG KAPAL PONTON LOA 100,5 METER Widyo Nugroho Ridlo; Dimas Endro Witjonarko Raden; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.678

Abstract

Pontoon is ships which is carrying material on their deck. Usually it is not self-propelled vessel. So it must be towed by tug boat. One of important things in ship’s transportation is an analysis of its longitudinal strength. It is very important because we have to make sure the ships will be safe when sailing. In this analysis, we have calculate maximum moment that occurs in the ships while the ships is in hogging and sagging condition. There are two method to analize this case, they are calculation and simulation in Maxsurf software. And the result is the maximum moment that occurs is 19.729,14 ton.m from calculation in hogging condition and -26,398 ton.m from simulation in sagging condition.
ANALISA UNJUK KERJA PROPELLER TYPE MAU PADA KAPAL PERINTIS 2000 GT DENGAN VARIASI SUDUT SKEW DAN SUDUT RAKE MENGGUNAKAN METODE CFD Artha Akbar Jala; Muhadi Eko Muhammad; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.714

Abstract

The construction of new ships has many aspects to be considered, one of which is the aspect ofplanning in the field of propulsion system. The Aspect of the propulsion system includes propeller designplanning. Propeller is one of the important aspects that must be properly planned so that the ship can reachthe maximum speed. Speed on the ship is inseparable from the good propeller design in order to get maximumperformance from the ship propeller movement. The purpose of this research is to know the maximumpropeller performance from 24 models of MAU type propeller variation with variable of skew angle variationand rake angle. The calculation of Ship resistance is 105,705 KN. The results of this study shows a propellermodel with a skew angle variation of 45 ° and rake angle 0 ° has the highest thrust value of 119,447 KN. Thelowest torque value is generated on the propeller model with a skew angle variation of 10 ° and a rake angleof 15 ° at 20.534 KN m. And the highest efficiency value is generated on propeller model with skew anglevariation 10 ° and rake angle 0 ° equal to 56,33%. Propeller model that has the maximum performance is apropeller model with skew angle variation of 10 ° and rake angle 0 ° because it has the highest efficiencyvalue that is equal to 56,33%.
Co-Authors Antoko Bambang Artha Akbar Jala Dimas Endro Witjonarko Raden Maruto Prijono Agil Muhadi Eko Muhammad Muhadi Eko Prayitno Muhammad Prasetyo Nugroho Agung Widyo Nugroho Ridlo