OCEAN CURRENT POTENTIAL ENERGY STUDY IN MALAMALA STRAIT SOUTHERN HALMAHERA

• Main Author: Putri Mirauli, Aisha
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46575
• Institution: Institut Teknologi Bandung

The consumption of energy in Indonesia is rising day by day. According to the law of economics, the more demand, there’s a possibility of scarcity. Therefore, a new source of energy is needed. Ocean currents can be one of the sources to put an end on this problem. The area which is studied in this research is Malamala Strait, in Southern Halmahera. The strait is located between Obira Island and Malamala Island. This research has two steps of the process. The first one is simulating the ocean current in Malamala Strait using a two-dimensional hydrodynamic model. DELFT3D is used for simulating the hydrodynamical process in Malamala Strait. The second step is mapping the potential of electrical energy in Malamala Strait. The simulation is executed for 40 days, starting from 1 November 2018 to 10 December 2018. The input used in this simulation is bathymetry and tidal data on four open boundaries. The potency of energy is counted using Fraenkel’s equation. The simmulation returns RMSE value of 0.09 m, percentage of error of 13.85%, ???? value of 0.98, and ???? value of 1.4. The simulation shows the maximum velocity of Malamala Strait is 0.43 m/s, with the average velocity 0.07 m/s. The power density reaches the maximum 309,73 W/m2 in one tidal cycle on the spring tide. Meanwhile, on the neap tide, the power density in one tidal cycle reaches 51,87 W/m2.