Experimental Investigation of the Hydrodynamic Performance of Land-Fixed Nearshore and Onshore Oscillating Water Column Systems with a Thick Front Wall

Ayrton Alfonso Medina Rodríguez, Gregorio Posada Vanegas, Rodolfo Silva Casarín, Edgar Gerardo Mendoza Baldwin, Beatriz Edith Vega Serratos, Felipe Ernesto Puc Cutz and Enrique Alejandro Mangas Che
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Ayrton Alfonso Medina Rodríguez: Institute of Engineering, National Autonomous University of Mexico, Circuito Escolar, Mexico City 04510, Mexico
Gregorio Posada Vanegas: EPOMEX Institute, Autonomus University of Campeche, 480 Héroe de Nacozari Ave, Campeche 24079, Mexico
Rodolfo Silva Casarín: Institute of Engineering, National Autonomous University of Mexico, Circuito Escolar, Mexico City 04510, Mexico
Edgar Gerardo Mendoza Baldwin: Institute of Engineering, National Autonomous University of Mexico, Circuito Escolar, Mexico City 04510, Mexico
Beatriz Edith Vega Serratos: EPOMEX Institute, Autonomus University of Campeche, 480 Héroe de Nacozari Ave, Campeche 24079, Mexico
Felipe Ernesto Puc Cutz: EPOMEX Institute, Autonomus University of Campeche, 480 Héroe de Nacozari Ave, Campeche 24079, Mexico
Enrique Alejandro Mangas Che: EPOMEX Institute, Autonomus University of Campeche, 480 Héroe de Nacozari Ave, Campeche 24079, Mexico

Energies, 2022, vol. 15, issue 7, 1-26

Abstract: Most experimental research on land-fixed Oscillating Water Column (OWC) systems assume that the OWC-water wave interaction happens with waves that propagate normally towards the device. However, the angle of incidence of the waves can determine the performance of the OWC, in particular the wave period at which the device resonates. In this study, an experimental investigation to examine the interaction of regular, oblique, water waves with a land-fixed, thick-front wall OWC device in terms of its hydrodynamic performance is reported. A 1:20 Froude scale was used to replicate a single chamber of the Mutriku Wave Energy Plant (MWEP), and a series of tests were carried out in a spectral wave basin. The goal of this study is to look at how incident wave direction and device location affect the hydrodynamic performance of land-fixed OWC systems in regular wave conditions with varying wave heights. The hydraulic performance includes the assessment of the wave amplification factor, hydrodynamic efficiency, the non-dimensional air pressure inside the chamber and non-dimensional water pressures on the chamber walls. The findings show that, for the nearshore OWC device, the period at which resonance occurs decreases when the incident wave angle increases. For the corresponding wave angles, similar results were found for the onshore and nearshore OWC devices, with a slight frequency shift in the bandwidth of the hydrodynamic efficiency. Furthermore, it was found that when wave height increases, the hydrodynamic efficiency improves for both short and long wave periods, with the exception of the resonance period, where the trend is reversed. Finally, regardless of the location, an OWC device with a thick front wall performs well when interacting with intermediate and long-period waves.

Keywords: wave energy conversion; oscillating water column; wave energy converter; wave basin; oblique waves; hydrodynamic performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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