Analisa Pengaruh Variasi Pitch Pada Propeller C-Series Terhadap Noise Dengan Metode Computational Fluid Dynamics

Sembodo, Ajar (2019) Analisa Pengaruh Variasi Pitch Pada Propeller C-Series Terhadap Noise Dengan Metode Computational Fluid Dynamics. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Propeller merupakan salah satu bagian penting sistem propulsi dari perangkat transportasi laut kapal, perkembangan konsep perancangan pada propeller sangat diperlukan. Salah satu komponen utama sistem propulsi adalah alat penggerak (propeller), pemilihan alat penggerak yang memiliki efektifitas baik akan mempengaruhi gaya dorong yang dihasilkan kapal tersebut namun selain itu aspek penting kenyamanan dan kebisingan menjadi tolak ukur. Salah satu jenis propeller yang ada saat ini yaitu C-Series dimana masing-masing jenis propeller memiliki karakteristik yang berbeda, namun karena minimnya informasi mengenai karakteristiknya sehingga keberadaannya masih sedikit yang menggunakan C-Series. Selain gaya dorong dan efisiensi yang baik parameter lainnya yang juga penting adalah noise, dimana noise dapat memberikan kebisingan. Sumber kebisingan terbesar dari sebuah kapal selain dari system instrumentasi kamar mesin salah satunya adalah propeller. Sebuah kapal selam khususnya navy vessel yang bergerak di bawah permukaan tentunya membutuhkan nilai noise yang rendah agar signal akustik yang dipancarkan dari gerak mekanis propeller tidak dapat ditangkap oleh alat penerima signal/transducer, sehingga baik dalam pengintaian. Pergerakan propeller yang berputar akan selalu menghasilkan noise. Dimana dengan menggunakan Ffowcs Williams-Hawking equation dan variasi j = 0.6, j = 0.8, j = 1.0 noise yang paling besar yang diperoleh dari hasil simulasi adalah pada pitch setting 1.4 + 1.6 yaitu sebesar 150 dB dengan j = 1.0 pada frekuensi rendah dan 108 dB pada frekuensi tinggi. Dan noise terendah yang diperoleh pada pitch setting 1.0 + 1.2 sebesar 142 dB dengan j = 1.0 pada frekuensi rendah dan 100 dB pada frekuensi tinggi. ================================================================================================ Propeller is one of the important parts of the propulsion system of ship's sea transportation equipment, the development of the design concept on the propeller is very necessary. One of the main components of the propulsion system is a propeller, the choice of a propulsion that has good effectiveness will affect the thrust produced by the ship but besides that the important aspects of comfort and noise are the benchmarks. One type of propeller is C-Series where each has different characteristics, but because of the lack of information about its characteristics so that its presence is still very few who use C-Series. In addition to good thrust and good efficiency, another important parameter is noise, where noise can provide tumoltuous. The biggest noise source else of a ship beside from the engine room instrumentation system is propeller. A submarine, especially a navy vessel that moves below the surface, of course requires a low noise value so that the acoustic signal emitted from the propeller mechanical motion cannot be captured by the signal / transducer receiver, so it is good at reconnaissance. The rotating motion of the propeller will always produce noise. Where by using the Ffowcs Williams-Hawking equation the biggest noise is obtained with j = 0.6, j = 0.8, j = 1.0 from the simulation results is the pitch setting 1.4 + 1.6 with j = 1.0 which is equal to 150 dB at low frequencies and 108 dB at high frequencies. And the lowest noise obtained in the 1.0 + 1.2 pitch setting is 142 dB with j = 1.0 at low frequencies and 100 dB at high frequencies.

Item Type: Thesis (Undergraduate)
Additional Information: RSSP 623.87 Sem a-1 2019
Uncontrolled Keywords: Pitch, Noise, Transducer, Computational Fluid Dynamics (CFD)
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD892 Noise control
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM753 Propellers
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: Ajar Sembodo
Date Deposited: 09 Dec 2021 01:32
Last Modified: 09 Dec 2021 01:32
URI: https://repository.its.ac.id/id/eprint/61716

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