Studi Manuver Pesawat Amfibi N219 Di Perairan Tenang Menggunakan Metode Dinamika Fluida Komputasi

Ahfad, Zidan Firdaus Ananda (2026) Studi Manuver Pesawat Amfibi N219 Di Perairan Tenang Menggunakan Metode Dinamika Fluida Komputasi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pesawat amfibi N219 saat beroperasi di air berperilaku sebagai wahana apung, sehingga kemampuan manuvernya perlu dievaluasi menggunakan standar maritim. Hingga saat ini belum terdapat studi yang menentukan hydrodynamic derivative oefficients floater N219 melalui uji Virtual Planar Motion Mechanism (PMM). Penelitian ini menentukan koefisien tersebut di perairan tenang melalui simulasi Computational Fluid Dynamics (CFD) berbasis RANS, serta mengevaluasi kelaikan manuvernya terhadap kriteria IMO MSC.137(76). Metode dengan model turbulensi k-ω SST dan teknik overset mesh divalidasi terlebih dahulu menggunakan lambung standar KRISO Container Ship (KCS). Uji static drift, pure sway, dan pure yaw disimulasikan, kemudian gaya lateral dan momen yaw non-dimensional diregresi linier untuk memperoleh koefisien turunan. Validasi KCS menunjukkan komponen translasi tervalidasi sangat baik, dengan Yv̇ menyimpang 1,6% terhadap data eksperimen HHI, sedangkan komponen rotari tervalidasi secara tren. Prediksi lintasan turning circle menggunakan model MMG pada variasi defleksi kemudi 15°, 25°, dan 35° seluruhnya memenuhi kriteria IMO. Pada defleksi 35° diperoleh Advance 3,168 L dan Tactical Diameter 2,919 L, dengan tactical diameter hanya berselisih 0,7% terhadap data eksperimen pembanding. Dengan demikian, rancangan floater N219 mampu bermanuver secara aman pada ruang perairan terbatas.
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When operating on water, the N219 amphibious aircraft behaves as a floating vehicle, so its maneuverability must be evaluated using maritime standards. To date, no study has determined the hydrodynamic derivative coefficients of the N219 floater through a Virtual Planar Motion Mechanism (PMM) test. This study determines these coefficients in calm water through RANS-based Computational Fluid Dynamics (CFD) simulations and evaluates the maneuvering compliance against the IMO MSC.137(76) criteria. The method, using a k-ω SST turbulence model and an overset mesh technique, was first validated against the standard KRISO Container Ship (KCS) hull. Static drift, pure sway, and pure yaw tests were simulated, and the non-dimensional lateral force and yaw moment were linearly regressed to obtain the derivatives. The KCS validation shows that the translational components are validated very well, with Yv̇ deviating 1.6% from the HHI experiments, while the rotary components are validated in trend. Turning-circle prediction using the MMG model at rudder deflections of 15°, 25°, and 35° satisfies the IMO criteria; at 35° deflection, an Advance of 3.168 L and a Tactical Diameter of 2.919 L were obtained, with the tactical diameter deviating by only 0.7% from comparable experimental data. Thus, the N219 floater design can maneuver safely within confined waters.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CFD, floater N219, hydrodynamic derivatives, Planar Motion Mechanism, manuver.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM311 Catamarans. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM761 Stability of ships
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Zidan Firdaus Ananda Ahfad
Date Deposited:	03 Aug 2026 08:32
Last Modified:	03 Aug 2026 08:32
URI:	http://repository.its.ac.id/id/eprint/141104

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