Performance Assessment of a Floating Coaxial Ducted OWC Wave Energy Converter for Oceanographic Purposes

Portillo, J.C.C.; Henriques, J.C.C.; Gato, L.M.C.; Gomes, R.P.F.; Falcão, A.F.O.

doi:10.1115/omae2015-41975

Cited by 3 publications

(1 citation statement)

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“…Two WEC devices were used to investigate the performance and survivability: the coaxial-duct OWC (CD-OWC) and the spar-buoy OWC [46,47]. The 1:40-scale models were designed based on a full-scale design [48,49]. They were designed and manufactured at UoP, following the sub-process presented in Fig.…”

Section: Physical Models and Configurationmentioning

confidence: 99%

Wave energy converter physical model design and testing: The case of floating oscillating-water-columns

et al. 2020

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The quest for exploiting the ocean resources and understanding its behaviour has been a challenge with increasing needs for innovation and technology. Model testing is an essential step in offshore renewable energy technology development. It involves challenges that require experience and guidance. Costly mistakes might arise with the subsequent waste of time and resources. This paper presents the model design and testing processes as part of wave energy projects and the results of experimental testing of two types of oscillating-water-column (OWC) wave energy converters (WEC). The model design aims at the creation of a reduced-scale model to simulate the physical phenomena found in full-scale devices. It is a process that requires several skills and an adequate compromise among all variables. This design involves several approaches as different physical phenomena do not follow the same similarity conditions, requiring adjustments in scale, materials, and other relevant properties. Besides, the model testing process comprises the necessary planning and actions to execute the tests and post-processing of data. This process is addressed here through model design and testing of two WECs: the coaxial-duct and the sparbuoy OWCs. The configurations have been designed and studied for large-scale energy production and small-scale power in oceanographic applications. Although the devices are both OWCs, the designs exhibit significant differences. The development process of the models and results are presented for the two OWC devices. Freedecay tests, hydrodynamic performance and mooring tension results are presented and discussed. These may serve as guidelines and numerical modelling validation.

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Section: Physical Models and Configurationmentioning

confidence: 99%