Pemodelan Numerik Arus Laut Akibat Gelombang Pecah Dengan Variasi Perubahan Jarak Antar Duct Berjajar Untuk Mendukung Pengembangan Energi Laut

Rafdillah, Muhammad (2023) Pemodelan Numerik Arus Laut Akibat Gelombang Pecah Dengan Variasi Perubahan Jarak Antar Duct Berjajar Untuk Mendukung Pengembangan Energi Laut. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Potensi Energi Laut sebagai Energi Baru dan Terbarukan (EBT) yang dimiliki oleh Indonesia sangatlah besar, walaupun pemberdayaan potensi ini belum diberdayakan secara merata. Diketahui dari 29 kabupaten di Jawa Timur terdapat 119 dusun yang belum teraliri oleh listrik, salah satunya kabupaten Pacitan. Pacitan sendiri memiliki potensi arus laut dengan kecepatan rata-rata sebesar 0.5 m/s. Pengaplikasian konverter arus dapat menjadi solusi dengan desain yang lebih kecil agar lebih ekonomis dan jumlah yang lebih banyak. Pemanfaatan gelombang pecah dapat dilakukan karena diketahui arus yang ditimbulkannya bernilai jauh lebih besar. Untuk mengembangkan potensi ini, Pada penelitian Tugas Akhir ini dilakukan pemodelan numerik untuk mengetahui lokasi dengan potensi yang maksimum. Pemodelan menggunakan Aquaveo SMS mendapatkan hasil bahwa Pantai Ngiroboyo Pacitan memiliki potensi yang cukup besar dengan kecepatan arus maksimum 0.599 m/s dan kecepatan arus rata-rata 0.397 m/s. Untuk meningkatkan potensi energi arus laut yang dapat ditangkap oleh konverter arus, penelitian ini juga menganalisa pemasangan Duct serta penyesuaian jarak antar Duct yang ditempatkan terhadap pengaruhnya dengan aliran arus. Hal ini dilakukan dengan pemodelan menggunakan program DualSPHysics dimana diketahui bahwa kecepatan maksimum pada aliran di dalam Duct mencapai 4.279 m/s, serta kecepatan rata-rata sebesar 0.897 m/s dimana rata-rata aliran meningkat sebesar 3.7% lebih besar dibandingkan tanpa adanya Duct. Sedangkan pengaruh perubahan jarak antar tiga buah Duct dari setengah kali lebar Inlet Duct menjadi satu kali lebar Inlet Duct menyebabkan laju kecepatan maksimum meningkat hingga 46.59% dan kecepatan rata-rata aliran mengalami kenaikan sebesar dua kali lipat.
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The potential of Ocean Energy as New and Renewable Energy (EBT) owned by Indonesia is very large, although its empowerment has not been evenly distributed. It is known that out of 29 regencies in East Java, there are 119 hamlets that have not yet been electrified, one of which is Pacitan district. Pacitan itself has the potential for ocean currents with an average speed of 0.5 m/s. The application of a current converter can be a solution with a smaller design to make it more economical and in larger quantities. Utilization of breaking waves can be done because it is known that the current generated is of much greater value. To develop this potential, in this final project's research, numerical modeling is carried out to find out the locations with the maximum potential. Modeling using Aquaveo SMS results in the conclusion that Ngiroboyo Pacitan Beach has quite a large potential, with a maximum current speed of 0.599 m/s and an average current speed of 0.397 m/s. In order to increase the energy potential of ocean currents that can be captured by current converters, this research also analyzes the installation of Ducts and the adjustment of the distance between the ducts that are placed against their effect on the current flow. This is done by modeling using the DualSPHysics program, where it is known that the maximum speed of flow in the Duct reaches 4,279 m/s and the average speed is 0,897 m/s, where the average flow increases by 3.7% more than without the Duct. While the effect of changing the distance between the three Ducts from half the width of the Inlet Duct to one times the width of the Inlet Duct makes the maximum speed to increases up to 46.59% and the average flow speed double.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Energi Arus Laut, Gelombang Pecah, Kecepatan Arus, Duct, Ocean Current Energy, Breaking Waves, Current Velocity, Duct
Subjects:	T Technology > T Technology (General) T Technology > T Technology (General) > T57.5 Data Processing T Technology > T Technology (General) > T57.62 Simulation T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. T Technology > TC Hydraulic engineering. Ocean engineering > TC203.5 Coastal engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC555 Spillways. Energy dissipation. Hydraulic jump. T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting.
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Rafdillah
Date Deposited:	24 Jul 2023 14:17
Last Modified:	24 Jul 2023 14:17
URI:	http://repository.its.ac.id/id/eprint/99144

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