Fatchurrohman, Muhamad Farid Fatchurrohman (2026) ANALISIS PENGARUH ANGLE OF ATTACK FIN PRE-SWIRL STATOR DUCT TERHADAP EFFISIENSI PROPULSI MENGGUNAKAN CFD. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pre-Swirl Stator Duct (PSSD) merupakan salah satu Energy Saving Device (ESD) yang digunakan untuk meningkatkan efisiensi propulsi kapal melalui pengondisian aliran sebelum memasuki propeler. Penelitian ini bertujuan menganalisis pengaruh variasi Angle of Attack fin PSSD terhadap karakteristik wake dan efisiensi propulsi menggunakan Computational Fluid Dynamics (CFD). Simulasi dilakukan pada model kapal tanker skala 1:25 dengan empat konfigurasi, yaitu bare hull, PSSD 1, PSSD 2, dan PSSD 3, melalui tahapan Resistance Test, Open Water Test, dan Self-Propulsion Test menggunakan Actuator Disk. Hasil simulasi menunjukkan bahwa variasi Angle of Attack fin PSSD memengaruhi distribusi hydrodynamic pressure, relative velocity, axial velocity, dan tangential velocity, sehingga meningkatkan nilai wake fraction dari 0.355 pada bare hull menjadi 0.363, 0.418, dan 0.422, serta menurunkan thrust deduction factor dari 0.198 menjadi 0.192, 0.147, dan 0.146. Perubahan karakteristik aliran tersebut menyebabkan nilai open water efficiency (η₀) menurun dari 0.480 menjadi 0.478, 0.461, dan 0.462, namun diikuti peningkatan hull efficiency (ηH) dari 1.171 menjadi 1.184, 1.248, dan 1.252, sehingga menghasilkan peningkatan propulsive efficiency (ηD) dari 0.562 pada bare hull menjadi 0.566, 0.575, dan 0.578. Hasil penelitian menunjukkan bahwa variasi Angle of Attack fin PSSD berpengaruh terhadap karakteristik wake di depan propeler dan mampu meningkatkan efisiensi propulsi kapal, dengan PSSD 3 memberikan performa terbaik.
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Pre-Swirl Stator Duct (PSSD) is one of the Energy Saving Devices (ESDs) designed to improve ship propulsive efficiency by conditioning the inflow before it reaches the propeller. This study aims to analyze the effect of the Angle of Attack of PSSD fins on wake characteristics and propulsive efficiency using Computational Fluid Dynamics (CFD). Simulations were conducted on a 1:25 scale tanker model with four configurations, namely the bare hull, PSSD 1, PSSD 2, and PSSD 3, through Resistance Test, Open Water Test, and Self-Propulsion Test using an Actuator Disk. The results show that variations in the PSSD fin Angle of Attack affect the distributions of hydrodynamic pressure, relative velocity, axial velocity, and tangential velocity, leading to an increase in the wake fraction from 0.355 for the bare hull to 0.363, 0.418, and 0.422, while reducing the thrust deduction factor from 0.198 to 0.192, 0.147, and 0.146. These flow modifications decreased the open water efficiency (η₀) from 0.480 to 0.478, 0.461, and 0.462, but increased the hull efficiency (ηH) from 1.171 to 1.184, 1.248, and 1.252, resulting in an improvement in the propulsive efficiency (ηD) from 0.562 for the bare hull to 0.566, 0.575, and 0.578. The results demonstrate that variations in the PSSD fin Angle of Attack influence the wake characteristics ahead of the propeller and improve the ship's propulsive efficiency, with PSSD 3 providing the best overall performance.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Pre-Swirl Stator Duct (PSSD), Angle of Attack, Computational Fluid Dynamics, Efisiensi Propulsi, Kapal Tanker Pre-Swirl Stator Duct (PSSD), Angle of Attack, Computational Fluid Dynamics, Propulsive Efficiency, Tanker Ship |
| 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: | Muhamad Farid Fatchurrohman |
| Date Deposited: | 04 Aug 2026 06:25 |
| Last Modified: | 04 Aug 2026 06:25 |
| URI: | http://repository.its.ac.id/id/eprint/142550 |
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