Analisis CFD Propulsion Test Untuk Evaluasi Efisiensi Hull Azimuth Propeller Pada Kapal Tugboat

Wibowo, Muhammad Budi (2025) Analisis CFD Propulsion Test Untuk Evaluasi Efisiensi Hull Azimuth Propeller Pada Kapal Tugboat. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Efisiensi sistem propulsi kapal merupakan faktor krusial untuk meningkatkan kinerja dan mengoptimalkan konsumsi bahan bakar di dunia maritim. Penelitian ini berfokus pada analisis Computational Fluid Dynamics (CFD) untuk propulsion test guna mengevaluasi efisiensi hull azimuth propeller pada kapal tugboat dengan variasi desain ducted propeller. Metode actuator disk digunakan dalam simulasi self-propulsion test pada rentang kecepatan 10 hingga 14 knot. Variasi desain propeller diadopsi dari penelitian sebelumnya oleh Pratama (2024), yaitu tiga propeller dengan efisiensi tinggi pada variasi sudut dihedral dan rasio ld/d. Hasil simulasi menunjukkan bahwa hambatan total kapal (RT) meningkat seiring bertambahnya kecepatan, dengan akurasi model CFD yang tinggi (error maksimal sekitar 3.95% pada 14 knot) dibandingkan data EFD. Analisis performa propeller menunjukkan nilai RPS, thrust, dan torsi cenderung meningkat seiring dengan peningkatan kecepatan. Variasi 1 secara konsisten menunjukkan nilai wake factor dan thrust deduction yang paling rendah, mengindikasikan interaksi lambung-propeller yang paling efisien. Nilai efisiensi hull (ηH) untuk Variasi 1 juga merupakan yang tertinggi dan paling stabil di seluruh rentang kecepatan yang diuji, menunjukkan keberhasilan dalam meminimalkan efek negatif dari thrust deduction. Sebaliknya, Variasi 3 menunjukkan kinerja yang paling tidak optimal, bahkan dengan efisiensi hull di bawah 1.0 pada kecepatan tinggi.
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Ship propulsion system efficiency is a crucial factor for enhancing performance and optimizing fuel consumption in the maritime world. This study focuses on a Computational Fluid Dynamics (CFD) analysis for a propulsion test to evaluate the hull efficiency of an azimuth propeller on a tugboat with various ducted propeller designs. The actuator disk method was employed in the self-propulsion test simulations at ship speeds ranging from 10 to 14 knots. The propeller design variations were adopted from previous research by Pratama (2024), which identified three propellers with high efficiency at different dihedral angles and l/d ratios. The simulation results showed that the total ship resistance (RT) increased with rising speed, with the CFD model demonstrating high accuracy (a maximum error of approximately 3.95% at 14 knots) when compared to EFD data. The propeller performance analysis indicated that RPS, thrust, and torque values generally increased with an increase in ship speed. Variation 1 consistently exhibited the lowest wake factor and thrust deduction values, indicating the most efficient hull-propeller interaction. The hull efficiency (ηH) for Variation 1 was also the highest and most stable across the tested speed range, demonstrating success in minimizing the negative effects of thrust deduction. In contrast, Variation 3 showed the least optimal performance, with hull efficiency even dropping below 1.0 at high speeds.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CFD, Propulsion Test, Efisiensi Hull, Azimuth Propeller, Tugboat
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:	Muhammad Budi Wibowo
Date Deposited:	06 Aug 2025 10:10
Last Modified:	06 Aug 2025 10:10
URI:	http://repository.its.ac.id/id/eprint/127843

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