Analisis Pengaruh Variasi Posisi Sail Dan Kondisi Operasi Terhadap Hambatan Pada Kapal Selam Darpa Suboff Menggunakan Metode Computational Fluid Dynamics (CFD)

Kasihprasetya, Montecristo Putra Kasihprasetya (2026) Analisis Pengaruh Variasi Posisi Sail Dan Kondisi Operasi Terhadap Hambatan Pada Kapal Selam Darpa Suboff Menggunakan Metode Computational Fluid Dynamics (CFD). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini menganalisis pengaruh variasi posisi sail dan kondisi operasi terhadap hambatan hidrodinamika kapal selam Darpa Suboff menggunakan metode Computational Fluid Dynamics (CFD). Variasi posisi sail yang digunakan adalah 0,25L, 0,5L, dan 0,75L, sedangkan kondisi operasi meliputi fully submerged, near free surface, dan free surface. Simulasi dilakukan pada kecepatan 4 knot, 8 knot, dan 12 knot dengan model turbulensi Realizable k–ε. Kondisi near free surface dan free surface dimodelkan menggunakan metode Volume of Fluid (VOF) untuk menangkap interaksi antara air dan udara. Hasil simulasi menunjukkan bahwa peningkatan kecepatan menyebabkan kenaikan nilai drag force pada seluruh konfigurasi. Kondisi fully submerged menghasilkan hambatan paling rendah karena tidak terjadi interaksi langsung dengan permukaan bebas. Sebaliknya, kondisi near free surface dan free surface menghasilkan hambatan lebih besar akibat deformasi permukaan dan pembentukan gelombang. Pengaruh posisi sail relatif kecil pada kondisi fully submerged, tetapi lebih terlihat pada kondisi yang melibatkan permukaan bebas. Secara umum, konfigurasi 0,75L menunjukkan hambatan lebih rendah pada kecepatan tinggi.
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This study analyzes the effect of sail position variations and operating conditions on the hydrodynamic resistance of the Darpa Suboff submarine using the Computational Fluid Dynamics (CFD) method. The sail position variations used in this study are 0.25L, 0.5L, and 0.75L, while the operating conditions include fully submerged, near free surface, and free surface. The simulations were conducted at speeds of 4 knots, 8 knots, and 12 knots using the Realizable k–ε turbulence model. The near free surface and free surface conditions were modeled using the Volume of Fluid (VOF) method to capture the interaction between water and air. The simulation results show that increasing speed causes an increase in drag force for all configurations. The fully submerged condition produces the lowest resistance because there is no direct interaction with the free surface. In contrast, the near free surface and free surface conditions produce higher resistance due to surface deformation and wave formation. The effect of sail position is relatively small under the fully submerged condition but becomes more significant under conditions involving the free surface. Overall, the 0.75L configuration exhibits lower resistance at higher speeds.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Darpa Suboff, sail, drag force, CFD, RANS Realizable k-e, fully submerged, near free surface, free surface Darpa Suboff, Sail, Drag Force, CFD, RANS Realizable k–e , Submerged Condition, Near free surface Condition, Free surface Condition.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings 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 > 36201-(S1) Undergraduate Thesis
Depositing User:	Montecristo Putra Kasihprasetya
Date Deposited:	12 Aug 2026 00:43
Last Modified:	12 Aug 2026 00:43
URI:	http://repository.its.ac.id/id/eprint/144321

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