Pemodelan Numerik Perilaku Gerak Dan Tegangan Tali Tambat Pada Floating Breakwater Berpori

Kautsar, Muhamad Azlian (2022) Pemodelan Numerik Perilaku Gerak Dan Tegangan Tali Tambat Pada Floating Breakwater Berpori. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Beragam potensi sumber daya pada bidang kelautan dan perikanan yang dapat ditingkatkan seperti pariwisata bahari, jasa kelautan dan industri maritim disekitar pesisir Indonesia. Ketika potensi ekonomi industri maritim dan jasa kelautan semakin meningkat, maka pelabuhan akan menjadi pusat ekonomi masyarakat. Saat ini, ruang menjadi sangat langka khususnya di wilayah pesisir dan sekitar pelabuhan Namun potensi pesisir yang ada dapat hilang karena adanya ancaman bencana abrasi dan perubahan iklim yang tidak menentu, Floating breakwater merupakan bangunan pelindung pantai yang dapat digunakan sebagai pemecah gelombang yang mengapung dan ditambatkan dengan tali tambat (mooring line) agar posisinya tetap pada tempatnya. Mooring line merupakan aspek penting bagi floating breakwater. Oleh karena itu, penelitian ini dilakukan untuk menganalisis perilaku gerak dan tegangan tali tambat sistem taut pada floating breakwater berpori. Analisis ini dilakukan dengan memodelkan floating breakwater berdasarkan data percobaan floating breakwater yang telah dilakukan. Data percobaan tersebut berupa data model dan data tegangan maksimum floating breakwater berpori. Setelah itu model disimulasikan pada software ANSYS AQWA. Simulasi ini dilakukan untuk mengetahui respone gerak Response Amplitude Operator) dan tegangan maksimum tali tambat floating breakwater berpori. Hasil RAO didapatkan bahwa Gerakan yang dominan yaitu Heave, Surge dan Pitch. Validasi tegangaan mooring dengan menggunakan MAPE dan didapatkan error rata-rata sebesar 9,69%. Model yang memiliki tegangan terbesar ialah model 1 pejal sebesar 93 N. berdasarkan hasil pengujian numerik semakin curam tingkat kemiringan sudut slope maka semakin kecil tegangan maksimum yang dihasilkan. Variasi sudut slope 45° dan 60° didapatkan tegangan maksimum terbesar yaitu 85,18 N dan 80,73 N pada pori 0% kemudian 72,97 N dan 65,37N pada pori 5%.
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Various potential resources in the marine and fisheries sector that can be improved such as marine tourism, marine services and maritime industries around the coast of Indonesia. When the economic potential of the maritime industry and marine services increases, the port will become the center of the community's economy. Currently, space is becoming very scarce, especially in coastal areas and around ports. However, the existing coastal potential can be lost due to the threat of abrasion and climate change that is uncertain. Floating breakwater is a coastal protection building that can be used as a floating breakwater and tethered by mooring line to keep it in place. Mooring line is an important aspect for floating breakwater. Therefore, this study was conducted to analyze the motion and tension behavior of the mooring rope system in a porous floating breakwater. This analysis is carried out by modeling the floating breakwater based on the experimental floating breakwater data that has been carried out. The experimental data are in the form of model data and maximum porous floating breakwater stress data. After that the model is simulated on the ANSYS AQWA software. This simulation was carried out to determine the response of the motion (Response Amplitude Operator) and the maximum tension of the porous floating breakwater mooring line. The RAO results show that the dominant movements are Heave, Surge and Pitch. Validation of mooring tension using MAPE and obtained an error of 9.69%. The model that has the largest stress is model 1 of 93 N. Based on the results of numerical testing, the steeper the slope angle, the smaller the maximum stress produced. The variation of the slope angle of 45° and 60° obtained the largest maximum stress, namely 85.18 N and 80.73 N at 0% pores, then 72.97 N and 65.37N at 5% pores.

Item Type:	Thesis (Other)
Additional Information:	RSKe 627.24 Kau p-1 2022
Uncontrolled Keywords:	ANSYS AQWA,floating breakwater,numerik ,sudut mooring,tegangan mooring dan RAO
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	- Davi Wah
Date Deposited:	13 May 2024 07:32
Last Modified:	13 May 2024 07:32
URI:	http://repository.its.ac.id/id/eprint/107931

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