Analisis Refleksi Gelombang Dengan Uji Model Fisik Dan Numerik (Dualsphysics) Terhadap Pemecah Gelombang Apung Beton

Zahra, Nabilah Syifasari (2025) Analisis Refleksi Gelombang Dengan Uji Model Fisik Dan Numerik (Dualsphysics) Terhadap Pemecah Gelombang Apung Beton. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Breakwater merupakan struktur bangunan yang umum dijumpai pada pesisir yang mengalami abrasi. Bangunan ini terbagi menjadi 2 tipe, fixed dan floating. Floating breakwater atau pemecah gelombang apung mampu mereduksi gelombang yang datang secara efektif pada daerah pesisir atau perairan dangkal. Pengujian kali ini bertujuan untuk mengetahui nilai koefisien refleksi terhadap variasi tinggi gelombang, periode gelombang, dan kedalaman baik secara fisik dan numerik. Skenario percobaan dibagi menjadi 2 yaitu sistem mooring dan sistem pile pada kedalaman 20, 25, dan 30 cm. Uji model fisik akan menggunakan gelombang reguler dan irreguler. Hasil uji fisik pada sistem pile menunjukkan bahwa kedalaman yang lebih kecil akan memberikan nilai refleksi yang lebih besar. Pada sistem tambat didapat bahwa tegangan tambat yang tinggi akan mengurangi nilai refleksi. Validasi numerik didapat dengan nilai RMSE 0.131 dan MAPE 5.061. Eksplorasi pengujian dilakukan dengan variasi nilai periode gelombang. Trendline pada pengujian fisik dan numerik menunjukkan kesinambungan sehingga dapat diharapkan pada penelitian selanjutnya dapat dilakukan pengujian fisik dengan variasi periode gelombang yang lebih bervariasi.
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Breakwater is a building structure that is commonly found on coasts to prevent abrasion. Thereare 2 types of breakwater, which are fixed and floating and it depends on environmental
conditions and needs. Floating breakwater can effectively reduce waves in coastal areas or shallow waters. Floating breakwater has several advantages, from an economic perspective to efficiency. Since it is more flexible, floating breakwaters are starting to be developed in several
countries. This test aims to determine the reflection coefficient value, which is based on variations in wave height, wave period, and depth, both physically and numerically. The experimental scenario is divided into 2 systems: the mooring system and the pile system, at
depths of 20 cm, 25 cm, and 30 cm. The physical model tests will employ both regular and irregular waves. The results of the physical tests on the pile system indicate that the more
shallow depths leads to higher reflection values. For the mooring system, it was found that higher mooring tension reduces reflection values. Numerical validation was obtained with an RMSE validation of 0.131 and a MAPE validation of 5.061. Further exploration in numerical testing was conducted by varying the wave period values. The trendlines from both physical and numerical tests demonstrate consistency, suggesting that future research could expand on
physical testing with a wider variation of wave periods.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Pemecah gelombang apung, Koefisien refleksi, Uji model fisik, DualSPHysics
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC203.5 Coastal engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC357 Harbor Engineering. Piers, quays, and wharves T Technology > TC Hydraulic engineering. Ocean engineering > TC363 Floating harbors. Including floating docks, piers, etc
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering
Depositing User:	Nabilah Syifasari Zahra
Date Deposited:	03 Jul 2025 11:44
Last Modified:	03 Jul 2025 11:44
URI:	http://repository.its.ac.id/id/eprint/119358

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