Studi Eksperimen Floating Breakwater dengan Variasi Kemiringan Slope dan Kerapatan Porositas

Pradanahadi, Bilal (2021) Studi Eksperimen Floating Breakwater dengan Variasi Kemiringan Slope dan Kerapatan Porositas. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Arah pengembangan teknologi saat ini memunculkan alternatif dari sistem breakwater tradisional/fixed breakwater menggunakan konsep terapung. Melalui penelitian ini, telah dilakukan uji eksperimen untuk mendapatkan hasil analisis koefisien transmisi (Kt) dan koefisien refleksi (Kr) floating breakwater akibat variasi kemiringan slope dan kerapatan porositas. Variasi kemiringan slope adalah 45° dan 60°, sedangkan variasi kerapatan porositas sebesar 0% dan 5%. Eksperimen dilakukan pada wave flume 2-dimensi dengan kedalaman air 75 cm, menggunakan gelombang reguler dengan variasi tinggi gelombang antara 5 sampai 12.5 cm dan periode gelombang antara 1.1 hingga 2 detik. Uji eksperimen menggunakan 5 model: (1) ponton, (2) sudut slope 45° pori 0% dan (3) pori 5%, selanjutnya (4) sudut slope 60° pori 0% dan (5) pori 5%. Hasil ekseperimen menunjukkan bahwa gelombang transmisi akan semakin kecil dengan kemiringan slope yang landai dan tanpa porositas. Sedangkan gelombang refleksi akan semakin kecil dengan kemiringan slope yang landai dan adanya porositas. ====================================================================================================== Current direction of technology development has led to an alternative to the traditional/fixed breakwater using the floating system. Through this research, experimental tests have been carried out to obtain the analysis result of the transmission coefficient (Kt) and reflection coefficient (Kr) of floating breakwater due to variations in the slope and porosity. The variations of the slope are 45 ° and 60 °, while the variations of the porosity are 0% and 5%. Experiments were carried out on a 2-dimensional wave flume with a water depth of 75 cm, using regular waves with variations in wave height between 5 and 12.5 cm and wave period between 1.1 to 2 seconds. The experimental test used 5 models: (1) pontoon, (2) slope with angle of 45 ° pore 0% and (3) pore 5%, then (4) slope with angle of 60° pore 0% and (5) pore 5%. The experimental results show that the transmission waves are getting smaller with a gentle slope and non-porous structure. Meanwhile, the reflection waves are getting smaller with a gentle slope and porous structure.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: floating breakwater, transmission coefficient, reflection coefficient, experimental study, regular wave, floating breakwater, koefisien transmisi, koefisien refleksi, studi eksperimen, gelombang reguler
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC203.5 Coastal engineering
T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Bilal Pradanahadi
Date Deposited: 26 Feb 2021 00:54
Last Modified: 26 Feb 2021 00:54
URI: https://repository.its.ac.id/id/eprint/82889

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