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A fully non-linear numerical model DualSPHysics, based on the coupling of a smoothed particle hydrodynamics (SPH) fluid solver with a multibody dynamics solver, is used to model the interaction between wave and WEHC sub-systems. The numerical model was first validated against experimental data for a similar device, with a good accordance between PTO position and velocity. The model is then employed to study the hydrodynamics of a constrained WEHC considering several sea states, different hydraulic power take-off (PTO) damping and breakwater geometries. It is observed that the capture width ratio (CWR) is particularly sensitive to variations in the PTO damping, although the CWR absolute maximum is less sensitive considering mild variations applied to the PTO damping. Both wave height and wave period have an important effect on the CWR. The breakwater geometry is also essential for the performance of the WEHC, with a decrease in maximum CWR of about 15% for porous breakwater. These results are necessary to understand the full-scale behaviour of WEHC.<\/jats:p>","DOI":"10.3390\/jmse10101489","type":"journal-article","created":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T02:29:46Z","timestamp":1665973786000},"page":"1489","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Numerical Model of Constrained Wave Energy Hyperbaric Converter under Full-Scale Sea Wave Conditions"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7024-9958","authenticated-orcid":false,"given":"Mois\u00e9s","family":"Brito","sequence":"first","affiliation":[{"name":"Research and Development Unit for Mechanical and Industrial Engineering (UNIDEMI), Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5734-5104","authenticated-orcid":false,"given":"Francisco","family":"Bernardo","sequence":"additional","affiliation":[{"name":"Research and Development Unit for Mechanical and Industrial Engineering (UNIDEMI), Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9022-702X","authenticated-orcid":false,"given":"Maria G.","family":"Neves","sequence":"additional","affiliation":[{"name":"CERIS\u2014Civil Engineering Research and Innovation for Sustainability, Department of Civil Engineering, NOVA School of Science and Technology, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4025-7981","authenticated-orcid":false,"given":"Diogo R. C. B.","family":"Neves","sequence":"additional","affiliation":[{"name":"INEGI\u2014Institute of Science and Innovation in Mechanical and Industrial Engineering, Campus da FEUP, Rua Dr. Roberto Frias 400, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3384-5061","authenticated-orcid":false,"given":"Alejandro J. C.","family":"Crespo","sequence":"additional","affiliation":[{"name":"EPHYSLAB\u2014Environmental Physics Laboratory, CIM-UVIGO, Campus As Lagoas, Universidade de Vigo, 32004 Ourense, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2586-5081","authenticated-orcid":false,"given":"Jos\u00e9 M.","family":"Dom\u00ednguez","sequence":"additional","affiliation":[{"name":"EPHYSLAB\u2014Environmental Physics Laboratory, CIM-UVIGO, Campus As Lagoas, Universidade de Vigo, 32004 Ourense, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Estefen, S.F., da Costa, P.R., Ricarte, E., and Pinheiro, M.M. (2007, January 10\u201315). Wave Energy Hyperbaric Device for Electricity Production. 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