Studi Numerik Pengaruh Penggunaan Hydrofoil Pada Kapal Katamaran Terhadap Hambatan Kapal

Nadapdap, Gilbert Ebenezer (2021) Studi Numerik Pengaruh Penggunaan Hydrofoil Pada Kapal Katamaran Terhadap Hambatan Kapal. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu upaya untuk mengurangi hambatan kapal adalah dengan menggunakan hydrofoil yang dipasang di dasar lambung kapal. Gaya angkat yang dihasilkan oleh hydrofoil mengangkat lambung kapal dan mengurangi luas permukaan yang dibasahi lambung sehingga menurunkan hambatan. Saat ini, inovasi untuk mengurangi hambatan kapal katamaran sedang menjadi penelitian yang menarik. Dalam penelitian ini akan diamati pengaruh penggunaan hydrofoil terhadap lambung kapal katamaran. Kapal penumpang katamaran dengan panjang 10,50 meter dan kecepatan dinas 24,5 knot digunakan untuk menguji pengaruh hydrofoil terhadap hambatan lambung katamaran. Analisis hambatan lambung katamaran dilakukan secara numerik dengan melakukan simulasi hambatan kapal melalui Computational Fluid Dynamics (CFD). Metode CFD Navier stokes digunakan dalam simulasi ini. Simulasi dilakukan untuk dua kasus, yaitu katamaran tanpa hydrofoil, dan dengan dua hydrofoil (di haluan dan buritan kapal). Hydrofoil yang digunakan dalam penelitian ini adalah jenis NACA 64 1-212 dengan sudut serang 4 °. Hasil penelitian menunjukkan bahwa penggunaan hydrofoil dapat menurunkan hambatan kapal khususnya bilangan froude yang tinggi. Pada bilangan froude rendah, hydrofoil meningkatkan resistansi. Dalam penelitian ini didapatkan bahwa penggunaan hydrofoil pada kapal katamaran mulai mengurangi hambatan mulai dari bilangan froude 0.7. Penggunaan hydrofoil pada kapal katamaran mampu mereduksi hambatan hingga 34.26% pada froude number 1.24. ============================================================================================= An effort to reduce ship resistance is the use of hydrofoil attached to hull bottom. Lift force generated by hydrofoil lifts ship hull up and reduces hull wetted surface area thereby decrease resistance. Recently, an innovation for reducing catamaran ship resistance is being interesting research. In this research, the use of the hydrofoil implemented for catamaran ship hull and the effects of the hydrofoil for catamaran hull are studied. A catamaran passenger ship with 10.50 meters length and the service speed of 24.5 knots are carried out to examine effect of hydrofoil to catamaran hull resistance. The catamaran hull resistance analysis is studied numerically by simulating ship resistance through Computational Fluid Dynamics (CFD). CFD method Navier stokes is used in the simulation. The simulation is carried out for two cases, i.e. a catamaran without hydrofoil, and with two hydrofoils (on the bow and stern of the ship). Hydrofoil used in this research is NACA 64 1-212 type with angle of attack of 4°. The results indicate that the use of hydrofoil can reduce ship resistance in particular high froude number. At low Froude number, the hydrofoil increases the resistance. In this simulation was obtained that the use of hydrofoil in catamaran ship started to reduce the resistance started from froude number 0.7. The use of hydrofoil in catamaran ship can reduce the resistance up to 34.26% in froude number 1.24.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: CFD, Hambatan, Hydrofoil, Katamaran
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 > VM362 Hydrofoil boats.
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 > 36202-(S1) Undergraduate Thesis
Depositing User: Gilbert Ebenezer Nadapdap
Date Deposited: 03 Mar 2021 06:12
Last Modified: 03 Mar 2021 06:12
URI: https://repository.its.ac.id/id/eprint/83291

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