Analisis Hambatan Remotely Operated Vehicle (ROV) Menggunakan Computational Fluid Dynamics (CFD)

Putri, Rr. Niken Danartika Hadi (2025) Analisis Hambatan Remotely Operated Vehicle (ROV) Menggunakan Computational Fluid Dynamics (CFD). Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh kedalaman dan permukaan bebas terhadap hambatan Remotely Operated Vehicle (ROV) menggunakan Computational Fluid Dynamics (CFD). Objek penelitian adalah UUV SN-01 yang dikembangkan oleh Laboratorium Teknologi Kapal Digital, Departemen Teknik Perkapalan FTK-ITS. Simulasi dilakukan dengan perangkat lunak Ansys Fluent pada enam variasi kecepatan (Fr = 0,153 – 0,891) dan empat variasi kedalaman (1,1D, 2,2D, 6D, dan 20D) dimana D adalah besar ketebalan UUV (0.182 m). Verifikasi hasil dilakukan menggunakan perangkat lunak OpenFOAM® pada dua kecepatan representatif (Fr = 0,229 dan Fr = 0,512). Hasil simulasi menunjukkan bahwa semakin dalam posisi UUV, nilai hambatan yang dialami cenderung menurun pada kecepatan yang sama. Penurunan paling signifikan terjadi antara kedalaman 1,1D dan 20D. Pada Fr = 0,512, hambatan berkurang dari 78.735 N (1,1D) menjadi 38.398 N (6D). Pada kedalaman 1,1D, badan UUV berada cukup dekat dengan permukaan air sehingga aliran di sekitarnya menghasilkan gelombang pada permukaan air. Sebaliknya, pada kedalaman yang lebih besar seperti 6D dan 20D, efek interaksi dengan permukaan air menjadi minimal, sehingga pembentukan gelombang berkurang drastis. Perbandingan nilai hambatan antara Ansys Fluent dan OpenFOAM® menunjukkan hasil yang konsisten, dengan deviasi hambatan pada kecepatan rendah berkisar 0.523% - 7.617%. Hasil ini menunjukkan bahwa kedua perangkat lunak dapat saling melengkapi dalam analisis CFD.
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This study examines the influence of submergence depth and free surface on the resistance of the Unmanned Underwater Vehicle (UUV) SN-01, developed by the Digital Ship Technology Laboratory, Department of Naval Architecture, ITS. Computational Fluid Dynamics (CFD) simulations were conducted using Ansys Fluent for six Froude numbers (Fr = 0,153–0,891) at depths 1,1D, 2,2D, 6D, and 20D where D is the thickness of the UUV SN-01 (0.182 m). To validate the numerical setup and ensure reliability, comparative simulations at Fr = 0,229 and Fr = 0,512 were performed using OpenFOAM®. Results indicate that submergence depth has a significant effect on resistance, especially at higher velocities. A notable reduction in resistance was observed as depth increased, particularly between 1,1D and 6D. At Fr = 0,512 the resistance decreased from 78.735 N at 1,1D to 38.398 N at 6D. This reduction is primarily attributed to diminished wave-making resistance as the UUV moves farther from the free surface. At depths of 6D and 20D, resistance values became nearly constant, indicating operation in deep-water conditions with negligible surface influence. The comparison between Ansys Fluent and OpenFOAM® produced consistent results, with resistance deviations ranging from 0.523% to 7.617%, confirming the applicability and reliability of both solvers for UUV resistance prediction. These findings highlight the importance of submergence depth in optimizing UUV hydrodynamic performance and demonstrate the effectiveness of CFD tools in supporting design evaluations.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	CFD, Hambatan, UUV SN-01, Kedalaman, Ansys Fluent, OpenFOAM®,CFD, Resistance, UUV SN-01, Depth, Ansys Fluent, OpenFOAM®
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM751 Resistance and propulsion of ships
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36101-(S2) Master Thesis
Depositing User:	Rr Niken Danartika Hadi Putri
Date Deposited:	13 Aug 2025 02:17
Last Modified:	13 Aug 2025 02:17
URI:	http://repository.its.ac.id/id/eprint/128077

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