Analisa Pengaruh Penambahan Boss Cap Fins Pada Propeller B - Series Dengan Pendekatan Metode CFD

Oloan, Achdri Fauzi Nugraha (2018) Analisa Pengaruh Penambahan Boss Cap Fins Pada Propeller B - Series Dengan Pendekatan Metode CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Propeller mempunyai fungsi yang sama dengan baling – baling fan dan mempunyai fungsi utama dalam sistem penggerak. Selain itu, untuk meningkatkan performance dari propeller . Engineer menngembangkan Energy Saving Devices ( ESD ) dengan tujuan untuk mengurangi biaya operasional, energi yang dihasilkan bersih dan dapat digunakan dalam jangka panjang. Emisi global yang dihasilkan di dunia marine adalah 2.7 % pada tahun 2007. Salah satu dari ESD tersebut adalah Propeller Boss Cap Fins ( PBCF ). Fokus dari penelitian ini adalah mendesain dan mengembangkan PBCF unttuk propeller tipe B series B4 – 85. Tugas akhir ini mempelajari performance propeller sebelum dan sesudah penambahan PBCF dan fokus pada efisiensi, gaya dorong, torsi dan fenomena dinamik hub vortex. Simulasi dalam pengambilan data PBCF dalam tugas akhir ini mengggunakan Computational Fluid Dynamics ( CFD ). Simulasi PBCF berdasarkan 5 variasi pitch angle 55 ˚, 60 ˚, 65 ˚, 70 ˚, 75 ˚. Hasil simulasi PBCF dengan pitch anggle 65 ˚ dapat meningkatkan performa effisiensi propeller sebesar 0.65 %, gaya dorong sebesar 2.69 % serta torsi sebesar 2.07 % jika dibandingkan dengan propeller tanpa PBCF. PBCF dapat merusak aliran hub vortex dan dapat mengurangi porosity dan korosi pada rudder. ======================================================================Propeller is similar to rotating fan blade with having primary function as propultion system. In order to increase propeller performance, Engineer is developing Energy Saving Devices ( ESD ) to reduces operational cost, clean energy and for long term utilization. The global emmision from marine is 2.7 % in 2007. One of ESD is Propeller Boss Cap Fins ( PBCF ). The focus of this thesis is to design and developed PBCF for B4-85 series propeller. This thesis studies the performance of a propeller without and with PBCF such as efficiency, thrust, torsion and dynamic hub vortex phenomenon. To obtain the results this thesis uses Computational Fluid Dynamic (CFD). The PBCF simulations were based on its pitch angle. There are 5 pitch angle variations, 55 ˚,60 ˚,65 ˚,70 ˚ and 75 ˚. The simulation results shows that PBCF pitched to 65 degree is achieved the highest efficiency which is 0.65 %, and increases thrust 2.69 %, and torsion increase 2.07 % compared to propeller without PBCF. It also shows that the PBCF is able to break the vortex flow and it will reduces the porosity to the rudder and decrese the corrosion potention to the rudder.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: PBCF, CFD, Efficiency, Thrust, Torsion, Hub Vortex
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM773 Ship propulsion, Electric
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User: Oloan Achdri Fauzi Nugraha
Date Deposited: 28 Jun 2021 06:35
Last Modified: 28 Jun 2021 06:35
URI: https://repository.its.ac.id/id/eprint/56075

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