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Design Selection and Geometry in OWC Wave Energy Converters for Performance
Content Provider | MDPI |
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Author | Iv, án López Carballo, Rodrigo Fouz, David Iglesias, Gregorio |
Copyright Year | 2021 |
Description | Although oscillating water column (OWC) wave energy converters are arguably one of the most studied technologies, it is not clear which chamber geometry, among all of the available alternatives, would provide the best performance at a site of interest. In this work, a numerical model based on the Navier-Stokes equations for two compressible fluids, using a volume-of-fluid interface-capturing approach, is implemented to determine the best performing OWC geometry in a case study off the Port of Vigo (NW Spain). Four general shapes of OWC are analyzed: classic, stepped-bottom, U-shaped and L-shaped, and geometrical variants are investigated. In total, 18 chamber geometries are studied, considering the same turbine geometry in all of them. It was found that the U-shaped and L-shaped designs are the most easily tuned to resonate at a period of interest. Of these two, the L-shaped performs better. The best performance is achieved for an L-shaped OWC design with a shallow entrance, a high horizontal chamber duct and a wide vertical duct, for which a maximum capture-width ratio of 71.6% was achieved. |
Starting Page | 1707 |
e-ISSN | 19961073 |
DOI | 10.3390/en14061707 |
Journal | Energies |
Issue Number | 6 |
Volume Number | 14 |
Language | English |
Publisher | MDPI |
Publisher Date | 2021-03-19 |
Access Restriction | Open |
Subject Keyword | Energies Marine Engineering Wave Energy Wave Energy Converter Wec Oscillating Water Column Owc |
Content Type | Text |
Resource Type | Article |