Analisa Pengaruh Hull Vane Berbentuk V dan Berbentuk Lurus Terhadap Hambatan Kapal Crew Boat “Orela” Menggunakan CFD

Saputra, Ahmad Septiawan (2020) Analisa Pengaruh Hull Vane Berbentuk V dan Berbentuk Lurus Terhadap Hambatan Kapal Crew Boat “Orela” Menggunakan CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Crew boat “Orela” merupakan crew boat yang dimiliki oleh PT. Orela Shipyard yang berada di Gresik, Indonesia. Untuk mengoptimalkan efisiensi penggunaan bahar bakar, direncanakan akan dipasang sebuah foil di belakang transom kapal yang disebut hull vane. Hull vane adalah suatu lifting surface yang dapat menghasilkan gaya angkat pada posisi dimana hull vane tersebut dipasang. Terdapat 2 jenis hull vane yang akan dipasang, yakni hull vane dengan span berbentuk lurus, dan berbentuk V sesuai dengan bentuk buritan kapal. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh penggunaan hull vane pada hambatan total yang dihasilkan oleh kapal. Untuk mengetahui hambatan kapal yang dihasilkan, digunakan metode perhitungan numerikal CFD (Computational Fluid Dynamics) dengan pembuatan 3D model kapal menggunakan data Lines plan kapal dan disesuaikan dengan data hidrostatiknya. Untuk memvalidasi hasil simulasi digunakan perhitungan empirik hambatan kapal dengan metode Savitsky untuk kapal planning. Dari hasil simulasi didapatkan bahwa penggunaan hull vane V efektif mengurangi hambatan pada Fr < 0.6 dengan pengurangan hambatan mencapai 30.7% pada Fr = 0.34. Penggunaan hull vane V juga mengurangi hambatan lebih besar dibanding penggunaan hull vane lurus pada setiap variasi simulasi. Penggunaan hull vane, untuk kedua bentuk menambah hambatan kapal pada Fr > 0.6, hal ini dikarenakan penggunaan hull vane pada kecepatan tinggi membuat kapal trim haluan yang menjadikan bagian haluannya lebih tercelup. Selain itu, gelombang yang dihasilkan cukup tinggi sehingga menyebabkan wave resistance yang lebih besar dibanding kapal tanpa hull vane. ======================== The "Orela" crew boat is a crew boat owned by PT. Orela Shipyard in Gresik, Indonesia. To optimize the efficiency of the use of fuel, the ship is planned to be installed a foil behind the transom of the ship called the hull vane. Hull vane is a lifting surface that can produce lift in the position where the hull vane is installed. There are 2 types of hull vane that will be installed on this ship, namely hull vane with a straight-shaped span, and V-shaped span in accordance with the stern shape of the ship. This study aims to determine how the influence of the use of hull vane on the total resistance produced by the ship. To determine the ship resistance produced, the CFD (Computational Fluid Dynamics) numerical calculation method is used, and 3D modeling of the ship using data from the Lines plan of the ship and adjusted to the hydrostatic data. To validate the simulation results, an empirical calculation of ship resistance using the Savitsky method is used for planning ship. From the simulation results it was found that the use of V-shaped hull vane effectively reduced the resistance at Fr < 0.6 with the reduction in resistance reaching 30.7% at Fr = 0.34. The use of V-shaped hull vane also reduces resistance greater than the use of straight-shaped hull vane in each variation of the simulation. The use of hull vane, both shape increase the resistance of the ship at Fr > 0.6, this is because the use of hull vane at high speed makes the ship bow-down trim which makes the bow more immersed. Moreover, the resulting waves are high enough to cause greater wave resistance compared to ships without hull vane.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: resistance, hull vane, savitsky method, CFD (computational fluid dynamics), hambatan, hull vane, metode savitsky, CFD (Computational Fluid Dynamics)
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics
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: Ahmad Septiawan Saputra
Date Deposited: 18 Aug 2020 07:17
Last Modified: 18 Aug 2020 07:17
URI: http://repository.its.ac.id/id/eprint/78980

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