Analisis Koefisien Hidrodinamik Unmanned Underwater Vehicle dengan Menggunakan Virtual Captive Model Test

Al Farisy, Salman (2024) Analisis Koefisien Hidrodinamik Unmanned Underwater Vehicle dengan Menggunakan Virtual Captive Model Test. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan riset wahana bawah air dalam beberapa tahun terakhir meningkat diiringi pemanfaatannya dalam menjelajahi lingkungan dalam bawah air. Di antara jenis wahana bawah air, Hybrid Remoted Operated Vehicles (HROV) dapat menjadi wahana yang memanfaatkan keunggulan dari jenis wahana Autonomous Underwater Vehicle (AUV) dan Remotely Operated Vehicle (ROV). HROV menawarkan mode operasional yang serbaguna dalam pengaplikasiannya di bidang industri. UUV Segara Nauta (SN-01) merupakan wahana bawah air HROV yang dikembangkan di Laboratorium TKD FTK-ITS dengan memiliki kecenderungan bentuk hidrodinamis dan modular. Kemampuan gerak HROV dituntut mampu bergerak dalam berbagai derajat kebebasan. Kemampuan gerak dinilai melalui pengujian manuver yang dapat memberikan karakteristik gerak suatu wahana disertai respon wahana mengikuti pola yang diperintahkan. Karakteristik gerak wahana berupa perilaku dasar dan performa manuver dapat direpresentasikan dengan nilai koefisien hidrodinamik yang diturunkan dari gaya dan momen yang dialami wahana. Koefisien hidrodinamik didapat melalui beberapa metode yang salah satunya pendekatan simulasi numerik. Simulasi numerik melalui captive model test diadaptasi untuk menentukan koefisien hidrodinamik wahana dalam memenuhi kriteria manuver. Pengujian manuver salah satunya rotating arm dilakukan untuk dalam mendapat nilai koefisien hidrodinamik. Tugas akhir ini bertujuan untuk melakukan virtual captive model test untuk pengujian rotating arm dengan menggunakan model UUV Segara Nauta (SN-01) dalam menentukan nilai koefisien hidrodinamik linear di bidang horizontal, yaitu gerakan sway dan yaw. Variasi pengujian berupa nilai sudut drift dan radius untuk menentukan pengaruh akibat kecepatan lateral dan kecepatan angular. Validasi simulasi dilakukan dengan menggunakan model SUBOFF yang memiliki data eksperimen sebagai perbandingan hasil simulasi CFD dengan kriteria perbandingan nilai di bawah 10%. Hasil simulasi CFD berupa nilai gaya dan momen diubah menjadi nondimensional dan menggunakan regresi linear dalam mendapat nilai koefisien hidrodinamik. Koefisien hidrodinamik model UUV Segara Nauta (SN-01) dapat menjelaskan perilaku model dan performa hidrodinamis dalam bawah air yang lebih responsif tetapi cenderung tidak stabil.
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The development of underwater vehicle research in recent years has increased along with its utilization in exploring the underwater environment. Among the types of underwater vehicles, Hybrid Remoted Operated Vehicles (HROV) can be a vehicle that utilizes the advantages of Autonomous Underwater Vehicle (AUV) and Remotely Operated Vehicle (ROV). HROVs offer versatile operational modes in industrial applications. UUV Segara Nauta (SN-01) is an HROV underwater vehicle developed at the TKD Laboratory FTK-ITS which developed to be hydrodynamic and modular. HROV motion ability are required to maneuver in various degrees of freedom. Motion ability is assessed through maneuver testing that can provide motion characteristics of a vehicle accompanied by the vehicle's response to the commanded pattern. The motion characteristics, including basic behavior and maneuver performance, are represented by hydrodynamic coefficients derived from the forces and moments experienced by the vehicle. The hydrodynamic coefficient is obtained through several methods, including a numerical simulation approach. Numerical simulation through a captive model test is adapted to determine the hydrodynamic coefficient of the vehicle in satisfy the maneuvering criteria. Maneuvering tests, one of which is the rotating arm, are carried out to obtain the value of the hydrodynamic coefficient. This final project aims to conduct a virtual captive model test for rotating arm testing using the UUV Segara Nauta (SN-01) model to determine the linear hydrodynamic coefficients in the horizontal plane, focusing on sway and yaw motions. Test variations include different drift angles and radius values to assess the effects of lateral and angular velocities. Simulation is validated by carried out using the SUBOFF model which has experimental data as a comparison of CFD simulation results with a value comparison criterion below 10%. The CFD simulation results, which include force and moment values, are converted into non-dimensional values and analyzed using linear regression to obtain the hydrodynamic coefficient. The hydrodynamic coefficient of the UUV Segara Nauta (SN-01) model can explain the model's behavior and underwater hydrodynamic performance, which is more responsive but tends to be unstable.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	computational fluid dynamics, hydrodynamic coefficients, koefisien hidrodinamik, underwater vehicle, virtual captive model test, wahana bawah air
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Salman Al Farisy
Date Deposited:	05 Aug 2024 08:32
Last Modified:	05 Aug 2024 08:32
URI:	http://repository.its.ac.id/id/eprint/112751

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