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- W3138265220 abstract "The increasing population density and the industrial expansion significantly affect the availability of land. In this context, the high modularity of Very Large Floating Structures may represent a promising alternative for multipurpose use. Furthermore, the interest for the sea as a source of renewable marine energy is increased in the last years. Among the large diversity of Wave Energy Converters, the Oscillating Water Column is one of the most promising concept. Moreover, when an OWC is integrated in a VLFS, it can increase the wave energy absorption and can attenuate the motion of the floating structure. Hence, there is a growing interest in the development of an innovative VLFS equipped with OWC devices. In this scope, the mitigating effect of the OWC on the VLFS motion can be combined with an increased efficiency of the OWC, thus better contributing to supply energy for the facilities located on the floating system. The study of a VLFS-OWC System conceived for a hypothetical installation in a Mediterranean area, with moderate wave climate, is performed by small-scale experiments, carried out in the wave-current flume of the Maritime Engineering Laboratory of Florence University. The tests focused on the effect of: OWC design parameters, incident waves, damping induced by a non-linear air turbine, length and heave motion of the VLFS, on the performance of the OWC, including its attenuating effect on the motion of the VLFS-OWC system. The design of fixed OWC, VLFS and VLFS-OWC models as well as the testing programme and laboratory procedures, are based on the literature review of the available numerical and physical models on OWC devices and VLFS. The most dominant parameters affecting the performance of a fixed OWC are: the chamber width (in wave propagation direction), the front wall draught and the damping induced by the air turbine. The additional parameters, affecting the efficiency of an OWC integrated in a VLFS, are: the length of the structure and the heave motion. Formulae are developed for predicting the heave motion of the VLFS-OWC system respectively, for regular waves and irregular waves, Formulae are developed for improving the prediction of the performance of a fixed OWC for an OWC integrated in a VLFS respectively, for regular irregular waves. These findings have contributed to improve the understanding of the OWC and the relative importance of the aforementioned parameters affecting the device under moderate wave climate." @default.
- W3138265220 created "2021-03-29" @default.
- W3138265220 creator A5002597525 @default.
- W3138265220 date "2018-06-18" @default.
- W3138265220 modified "2023-09-23" @default.
- W3138265220 title "Oscillating water column wave energy converters integrated in very large floating structures" @default.
- W3138265220 doi "https://doi.org/10.24355/dbbs.084-201806181453-0" @default.
- W3138265220 hasPublicationYear "2018" @default.
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