Analisis Pola Arus Laut Sebagai Pemetaan Awal Potensi Energi Arus di Selat Pantar Menggunakan Pemodelan Hidrodinamika

Kartika, Devia Ayu (2026) Analisis Pola Arus Laut Sebagai Pemetaan Awal Potensi Energi Arus di Selat Pantar Menggunakan Pemodelan Hidrodinamika. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5016221025-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (8MB) | Request a copy

Abstract

Selat Selat Pantar yang terletak di antara Pulau Pantar dan Pulau Alor, Provinsi Nusa Tenggara Timur, merupakan perairan strategis dengan dinamika arus yang kuat akibat pengaruh pasang surut dan Arus Lintas Indonesia (ARLINDO). Penelitian ini bertujuan menganalisis pola arus laut berdasarkan variasi musiman, mengidentifikasi zona potensial pemasangan turbin arus laut berdasarkan pembagian zona analisis, serta mengestimasi daya listrik yang dihasilkan menggunakan turbin Gorlov, Darrieus, Savonius, dan Kobold. Pemodelan dilakukan menggunakan Delft3D dengan pendekatan hidrodinamika 2D nesting selama Januari-Desember 2024. Data yang digunakan meliputi batimetri, pasang surut TPXO 10.0, data angin ECMWF Copernicus, serta data validasi pasang surut Badan Informasi Geospasial. Hasil validasi menunjukkan performa model yang baik dengan nilai RMSE dan MAE masing-masing sebesar 0,132 m dan 0,106 m pada stasiun Alor, serta 0,135 m dan 0,111 m pada stasiun Bakalang. Nilai NSE dan indeks Willmott yang mendekati 1 menunjukkan tingkat kesesuaian model yang tinggi terhadap data observasi. Hasil pemodelan menunjukkan bahwa arus di Selat Pantar bersifat tide-dominated dengan pola reciprocal tidal current yang bergerak bolak-balik mengikuti sumbu Timur Laut-Barat Daya. Kecepatan arus rata-rata spasial tahunan tercatat sebesar 0,236 m/s dengan nilai maksimum mencapai 1,685 m/s. Variasi musiman arus relatif kecil, berkisar antara 0,595 m/s pada Musim Timur hingga 0,610 m/s pada Peralihan II di zona penyempitan utama, yang menunjukkan dominasi constriction effect morfologi selat terhadap distribusi kecepatan arus sepanjang tahun. Analisis spasial berbasis empat zona mengidentifikasi Zona 2 (124,27°-124,41° BT dan 8,25°-8,35° LS) sebagai zona prioritas dengan kecepatan rata-rata tahunan tertinggi sebesar 0,602 m/s dan kecepatan maksimum 1,710 m/s. Turbin Savonius memiliki cakupan area potensial terluas sebesar 158,65 km², sedangkan turbin Kobold menghasilkan daya tertinggi dengan rata-rata 12.447,6 W dan maksimum 49.033,8 W per unit, serta berpotensi melayani sekitar 54,90% rumah tangga yang belum berlistrik di Nusa Tenggara Timur. Hasil penelitian ini diharapkan menjadi dasar awal pengembangan Pembangkit Listrik Tenaga Arus Laut di Selat Pantar.
================================================================================================================================
The Pantar Strait, located between Pantar Island and Alor Island in East Nusa Tenggara Province, is a strategic body of water with strong current dynamics caused by tidal influences and the Indonesian Throughflow (ARLINDO). This study aims to analyze ocean current patterns based on seasonal variations, identify potential zones for installing ocean current turbines based on the analysis zone division, and estimate the electrical power generated using Gorlov, Darrieus, Savonius, and Kobold turbines. Modeling was performed using Delft3D with a 2D nested hydrodynamic approach for the period January-December 2024. The data used included bathymetry, TPXO 10.0 tidal data, ECMWF Copernicus wind data, and validation tidal data from the National Geospatial Information Agency. Validation results indicate good model performance, with RMSE and MAE values of 0.132 m and 0.106 m, respectively, at the Alor station, and 0.135 m and 0.111 m at the Bakalang station. NSE and Willmott index values approaching 1 indicate a high level of model agreement with observational data. The modeling results indicate that the currents in the Pantar Strait are tide-dominated, exhibiting a reciprocal tidal current pattern that moves back and forth along the Northeast-Southwest axis. The annual spatial average current velocity was recorded at 0.236 m/s, with a maximum value reaching 1.685 m/s. Seasonal variations in current velocity are relatively small, ranging from 0.595 m/s during the East Monsoon to 0.610 m/s during Transition II in the main constriction zone, indicating the dominance of the strait’s morphological constriction effect on the distribution of current velocity throughout the year. A spatial analysis based on four zones identified Zone 2 (124.27°-124.41° E and 8.25°-8.35° S) as the priority zone, with the highest annual average velocity of 0.602 m/s and a maximum velocity of 1.710 m/s. The Savonius turbine has the widest potential coverage area at 158.65 km², while the Kobold turbine generates the highest power output, averaging 12,447.6 W and reaching a maximum of 49,033.8 W per unit, and has the potential to serve approximately 54.90% of households without electricity in East Nusa Tenggara. The results of this study are expected to serve as the initial basis for the development of a tidal power plant in the Pantar Strait.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Arus Laut, Delft3D, Pemodelan Hidrodinamika, Selat Pantar, Turbin Arus Laut, Ocean Current, Delft3D, Hydrodynamic Modeling, Pantar Strait, Marine Current Turbine
Subjects:	Q Science > QA Mathematics > QA911 Fluid dynamics. Hydrodynamics T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Devia Ayu Kartika
Date Deposited:	25 Jun 2026 08:38
Last Modified:	25 Jun 2026 08:38
URI:	http://repository.its.ac.id/id/eprint/134044

Actions (login required)

View Item