Analisis Redaman Gelombang Pada Floating Breakwater Tipe Bambu

-, Fawwaz (2016) Analisis Redaman Gelombang Pada Floating Breakwater Tipe Bambu. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dewasa ini kerusakan pantai terus meningkat. Hal ini mengarah pada kebutuhan untuk mengembangkan struktur pemecah gelombang yang lebih efisien baik apung maupun fixed. Salah satu yang sedang berkembang dan banyak diteliti adalah floating breakwater. Dengan keunggulan tersendiri dibanding dengan fixed breakwater, floating breakwater dinilai mampu melindungi pantai. Bambu merupakan salah satu material yang baik untuk floating breakwater karena sifat dasarnya yang kuat dan mengapung. Penelitian dengan uji model fisik di Laboratorium Lingkungan dan Energi Laut Jurusan Teknik Kelautan Fakultas Teknologi Kelautan Institut Teknologi Sepuluh Nopember bertujuan untuk mengetahui redaman gelombang dari struktur floating breakwater. Variabel yang digunakan adalah tinggi gelombang H, periode gelombang T, dan bentuk model dengan skala model 1:10. Parameter yang digunakan adalah wave steepness ( ), tinggi gelombang awal , periode gelombang awal , dan spektrum gelombang. Hasil penelitian menunjukkan bahwa koefisien transmisi (Kt) berbanding terbalik dengan dan berbanding lurus dengan dan . Dalam penelitian pada gelombang regular Kt terkecil diperoleh 0.731378 pada kedalaman 80 cm. Dan penelitian yang dilakukan pada gelombang irregular Kt terkecil diperoleh 0.634615 pada kedalaman 60 cm dengan bentuk model N. =============================================================================================== The needs for more efficient breakwater structure are escalating due to the increasement of coastal damages. Floating breakwaters studies are now developing, with some advantages that makes them worthy to be compared with fixed breakwaters. Bamboo is considered a good material for floating breakwater due to its natural properties which is strong, ductile and floating. An experiment with physical model is being held at Laboratory of Environment and Marine Energy, Department of Ocean Engineering, Faculty of Marine Technology, Sepuluh Nopember Institute of Technology aiming at discovering the transmission coefficient of floating breakwater structure. Some variables as wave height (H), wave period (T), as well as some parameters such as wave steepness (H/gT2), initial wave height (Hi), intial period (Ti), and wave spectrum will be observered in this study. The results of the experiments, show that transmission coefficient is inversely propotional to wave steepness, but is propotional to Hi and Ti. On the regular wave experiments, the results show that the smallest transmission coefficient is 0.73, occured at 80 cm water depth. However, On the irregular wave experiments, the results show that the smallest transmission coefficient is 0.63 occured at 60 cm water depth, using the N model bamboo

Item Type: Thesis (Undergraduate)
Additional Information: RSKe 627.24 Faw a
Uncontrolled Keywords: Floating breakwater, Bambu, Koefisien transmisi, Wave steepness
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: Faculty of Marine Technology > Ocean Engineering > (S1) Undergraduate Theses
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 11 Sep 2017 04:02
Last Modified: 26 Dec 2018 02:06
URI: http://repository.its.ac.id/id/eprint/48824

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