Penggunaan Vortex Generator Airfoil untuk Peningkatan Performa Kapal

Rahman, Rifaldi Fatkhur (2026) Penggunaan Vortex Generator Airfoil untuk Peningkatan Performa Kapal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Regulasi Energy Efficiency Existing Ship Index (EEXI) yang ditetapkan oleh International Maritime Organization (IMO) mendorong pengembangan teknologi untuk meningkatkan efisiensi energi kapal melalui pengurangan tahanan. Salah satu Energy Saving Device (ESD) yang banyak digunakan adalah vortex generator (VG), namun penelitian mengenai vortex generator berpenampang airfoil pada lambung kapal masih terbatas. Penelitian ini bertujuan menganalisis pengaruh penggunaan vortex generator berpenampang airfoil terhadap tahanan dan karakteristik propulsi kapal serta membandingkannya dengan vortex generator berpelat datar. Objek penelitian yang digunakan adalah KRISO Container Ship (KCS). Analisis dilakukan melalui metode vortex panel untuk mengevaluasi karakteristik airfoil, kemudian dilanjutkan dengan simulasi CFD menggunakan ANSYS Fluent untuk analisis resistance dan self-propulsion. Hasil analisis vortex panel menunjukkan bahwa airfoil S1223 memiliki karakteristik aerodinamika terbaik dengan nilai CL sebesar 2,2926, CD sebesar 0,0016, dan rasio CL/CD sebesar 1432,88. Namun, hasil simulasi CFD menunjukkan bahwa airfoil hasil optimasi memberikan performa terbaik dalam menurunkan tahanan kapal dengan reduksi maksimum sebesar 8,15% pada kecepatan 2,196 m/s, lebih tinggi dibandingkan S1223 (4,52%) dan Clark Y (2,87%), serta lebih baik daripada vortex generator berpelat datar. Pengujian self-propulsion menunjukkan bahwa reduksi tahanan terbesar tidak selalu menghasilkan efisiensi propulsi terbaik. Airfoil Clark Y menghasilkan overall propulsive efficiency tertinggi sebesar 0,7064, sedangkan airfoil optimasi menghasilkan efisiensi sebesar 0,6585. Hasil penelitian menunjukkan bahwa desain vortex generator perlu mempertimbangkan keseimbangan antara pengurangan tahanan dan efisiensi propulsi.
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The Energy Efficiency Existing Ship Index (EEXI) regulation established by the International Maritime Organization (IMO) has encouraged the development of technologies to improve ship energy efficiency by reducing hull resistance. One of the most widely used Energy Saving Devices (ESDs) is the vortex generator (VG); however, studies on airfoil-based vortex generators for ship hull applications remain limited. This study aims to investigate the effect of airfoil-based vortex generators on ship resistance and propulsive performance and to compare their performance with conventional flat-plate vortex generators. The KRISO Container Ship (KCS) was selected as the case study. The airfoil characteristics were initially evaluated using the vortex panel method, followed by Computational Fluid Dynamics (CFD) simulations in ANSYS Fluent for resistance and self-propulsion analyses. The vortex panel analysis showed that the S1223 airfoil exhibited the best aerodynamic performance, with a lift coefficient (CL) of 2.2926, a drag coefficient (CD) of 0.0016, and a CL/CD ratio of 1432.88. However, the CFD results indicated that the optimized airfoil provided the best hydrodynamic performance, achieving a maximum resistance reduction of 8.15% at a speed of 2.196 m/s, outperforming the S1223 airfoil (4.52%), Clark Y airfoil (2.87%), and conventional flat-plate vortex generator. The self-propulsion analysis revealed that the greatest resistance reduction did not necessarily result in the highest propulsive efficiency. The Clark Y airfoil achieved the highest overall propulsive efficiency of 0.7064, while the optimized airfoil produced an efficiency of 0.6585. These findings demonstrate that vortex generator design should consider not only resistance reduction but also the hydrodynamic interaction between the hull and propeller to achieve optimal overall ship performance.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Airfoil, EEXI, Pengurangan Tahanan Kapal, Vortex Generator, Airfoil, EEXI, Ship Resistance Reduction, Vortex Generator.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM751 Resistance and propulsion of ships
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Rifaldi Fatkhur Rahman
Date Deposited:	04 Aug 2026 07:24
Last Modified:	04 Aug 2026 07:24
URI:	http://repository.its.ac.id/id/eprint/143335

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