Pemodelan Numerik Hidrodinamika pada Berbagai Layout Floating Breakwater Berpori

Ahidah, Diva Rahmah (2023) Pemodelan Numerik Hidrodinamika pada Berbagai Layout Floating Breakwater Berpori. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Berbagai macam inovasi guna perkembangan breakwater telah dilakukan saat ini. Salah satunya adalah pengembangan breakwater tipe floating atau biasanya yang disebut floating breakwater. Floating breakwater dibandingkan dengan breakwater konvesional khususnya fixed breakwater memiliki kelebihan dalam berbagai hal, utamanya adalah faktor ekonomi. Pada breakwater konvesional, material dan biaya yang dibutuhkan seiring bertambahnya kedalaman perairan sangatlah besar. Berbeda dengan floating breakwater yang semakin bertambahnya kedalaman, biaya dan material yang dibutuhkan tidak meningkat secara signifikan. Selain itu, instalasi floating breakwater juga terbilang sederhana. Floating breakwater dapat ditransportasikan dengan fleksibel dan proses instalasi yang tidak memakan waktu lama seperti pembangunan breakwater konvesional. Tujuan dari penelitian ini adalah untuk mengetahui efek layout floating breakwater dalam meredam gelombang dengan melihat koefisien transmisi dan refleksinya. Dalam penelitian ini 4 model array floating breakwater berpori dengan porositas dimodelkan secara numerik menggunakan software Flow-3D. Selain itu, juga dilakukan penelitian dengan memvariasikan layout floating breakwater yang terdiri dari layout i-shaped, v-shaped dan u-shaped. Efektifitas masing-masing layout juga diteliti ketika terkena gelombang dari sudut datang 0°, 30° dan 60°. Diantara ketiga layout, yang memiliki kemampuan mentransmisikan dengan optimum adalah layout u-shaped dengan koefisien transmisi pada arah gelombang datang 0° adalah 0,68; arah gelombang datang 30° adalah 0,66; arah gelombang datang 60° adalah 0,62. Sedangkan layout yang optimum dalam merefleksikan gelombang adalah layout i-shaped dengan koefisien refleksi pada arah gelombang datang 0° adalah 0,76; arah gelombang datang 30° adalah 0,72; arah gelombang datang 60° adalah 0,70.
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Various kinds of innovations for the development of breakwater have been carried out today. One of them is the development of floating type breakwater or usually called floating breakwater. Floating breakwater compared to conventional breakwater, especially fixed breakwater, has advantages in various ways, mainly economic factors. In conventional breakwaters, the materials and costs required as the depth of the waters increases is enormous. Unlike floating breakwater which increases in depth, the cost and materials required do not increase significantly. In addition, the installation of floating breakwater is also fairly simple. Floating breakwater can be transported flexibly and the installation process does not take long such as the construction of conventional breakwater. The purpose of this study was to determine the effect of floating breakwater layout in dampening waves by looking at the transmission coefficient and reflection. In this study, 4 porous floating breakwater array models with porosity were modeled numerically using Flow-3D software. In addition, research was also conducted by varying the floating breakwater layout consisting of i-shaped, v-shaped and u-shaped layouts. The effectiveness of each layout was also examined when exposed to waves from 0°, 30° and 60° incident angles. Among the three layouts, the layout that has the ability to transmit optimally is the u-shaped layout with the transmission coefficient in the direction of the incident wave 0° is 0.68; the direction of the incident wave of 30° is 0.66; the direction of the incident wave of 60° is 0.62. While the optimal layout in reflecting waves is an i-shaped layout with a reflection coefficient in the direction of the incident wave 0° is 0.76; the direction of the incident wave of 30° is 0.72; the direction of the wave of incidence of 60° is 0.70.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Floating Breakwater, Flow-3D, Koefisien Refleksi, Koefisien Transmisi, Layout Floating Breakwater, Flow-3D, Reflection coefficient, Transmission coefficient, Layout
Subjects:	T Technology > T Technology (General) > T11 Technical writing. Scientific Writing T Technology > T Technology (General) > T57.62 Simulation T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Diva Rahmah Ahidah
Date Deposited:	22 Jul 2023 06:15
Last Modified:	22 Jul 2023 06:15
URI:	http://repository.its.ac.id/id/eprint/98906

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