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COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL ANALYSIS OF A POINT ABSORBER UNDER REGULAR WAVES
Submission Author:
Paulo Lamarão , RS , Brazil
Co-Authors:
Paulo Lamarão, Alexandre Menegazzo, Leonardo Pazim, Walter Jesus Paucar Casas, Vittorio Nardin
Presenter: Paulo Lamarão
doi://10.26678/ABCM.COBEM2019.COB2019-1706
Abstract
Due to the great potential of energy generated by waves, the search for principles of conversion for this type of energy is the subject of many researches. It is known that oscillating body systems are able to take advantage of the energetic potential of the waves in the open sea. Therefore, they represent an alternative for devices installed near or on-shore, such as water column devices and reservoirs filled by wave actions. Thus, the objective of this paper consists in a numerical analysis of the behavior and the energetic potential of a Point Absorber (PA) device fully submerged under the Airy waves action. The development of this paper includes numerical simulation made with the Ansys AQWA software to obtain the hydrodynamic properties. The validation of the mesh refinement and of the time step was made. The wave parameters and the dimensions of the system were chosen in order to enable a posterior comparison with the experimental analysis in a wave tank. For the results, the graphs of position, frequency spectrum, force at the spring and potential energy were plotted for different wave parameters. It is expected that the systems analyzed show stability and a significant amount of converted potential energy.
Keywords
point absorber, wave energy, Numerical simulation
