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Ocean Energy Systems Wave Energy Modelling Task: Modelling, Verification and Validation of Wave Energy Converters
NREL, 15013 Denver West Pkwy, Golden, CO 80401 USA..
Ramboll Grp AS, Hannemanns Alle 53, DK-2300 Copenhagen S, Denmark.;Aalborg Univ, Dept Civil Engn, Thomas Mann Vej 23, DK-9220 Aalborg O, Denmark..
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Numerical Analysis, NA.ORCID iD: 0000-0003-4256-0463
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Computational Science and Technology (CST).ORCID iD: 0000-0002-1695-8809
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Number of Authors: 432019 (English)In: Journal of Marine Science and Engineering, E-ISSN 2077-1312, Vol. 7, no 11, article id 379Article in journal (Refereed) Published
Abstract [en]

The International Energy Agency Technology Collaboration Programme for Ocean Energy Systems (OES) initiated the OES Wave Energy Conversion Modelling Task, which focused on the verification and validation of numerical models for simulating wave energy converters (WECs). The long-term goal is to assess the accuracy of and establish confidence in the use of numerical models used in design as well as power performance assessment of WECs. To establish this confidence, the authors used different existing computational modelling tools to simulate given tasks to identify uncertainties related to simulation methodologies: (i) linear potential flow methods; (ii) weakly nonlinear Froude-Krylov methods; and (iii) fully nonlinear methods (fully nonlinear potential flow and Navier-Stokes models). This article summarizes the code-to-code task and code-to-experiment task that have been performed so far in this project, with a focus on investigating the impact of different levels of nonlinearities in the numerical models. Two different WECs were studied and simulated. The first was a heaving semi-submerged sphere, where free-decay tests and both regular and irregular wave cases were investigated in a code-to-code comparison. The second case was a heaving float corresponding to a physical model tested in a wave tank. We considered radiation, diffraction, and regular wave cases and compared quantities, such as the WEC motion, power output and hydrodynamic loading.

Place, publisher, year, edition, pages
MDPI , 2019. Vol. 7, no 11, article id 379
Keywords [en]
wave energy, numerical modelling, simulation, boundary element method, computational fluid dynamics
National Category
Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-266242DOI: 10.3390/jmse7110379ISI: 000502261500002Scopus ID: 2-s2.0-85075672461OAI: oai:DiVA.org:kth-266242DiVA, id: diva2:1382474
Note

QC 20200103

Available from: 2020-01-03 Created: 2020-01-03 Last updated: 2020-01-03Bibliographically approved

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Hoffman, JohanJansson, JohanLeoni, Massimiliano

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