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Ocean energy systemswave energy modelling task: Modelling, verification and validation ofwave energy converters
National Renewable Energy Laboratory, US.
RISE - Research Institutes of Sweden, Safety and Transport, Safety. Aalborg University, Denmark.ORCID iD: 0000-0001-6934-634x
Saga University, Japan.
Number of Authors: 282019 (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 AG , 2019. Vol. 7, no 11, article id 379
Keywords [en]
Boundary element method, Computational fluid dynamics, Numerical modelling, Simulation, Wave energy
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42079DOI: 10.3390/jmse7110379Scopus ID: 2-s2.0-85075672461OAI: oai:DiVA.org:ri-42079DiVA, id: diva2:1379477
Note

Funding details: National Renewable Energy Laboratory, NREL; Funding details: Energimyndigheten, P44423-1, 375 P44432-1; Funding details: Sandia National Laboratories; Funding details: U.S. Department of Energy, USDOE; Funding details: Science Foundation Ireland, SFI, 13/IA/1886; Funding details: Office of Energy Efficiency and Renewable Energy, EERE; Funding details: DE-AC36-08GO28308; Funding details: DE-NA0003525; Funding details: Energistyrelsen, DEA, 374 64017-05197; Funding text 1: The Danish partners acknowledge the support from the Danish Energy Agency through project 374 64017-05197. The Swedish partners were supported by the Swedish Energy Agency under Grants P44423-1 and 375 P44432-1. J.V.R. and G.G. acknowledge the support by Science Foundation Ireland under Grant 13/IA/1886. This research was made possible by support from U.S. the Department of Energy's EEREWater Power Technologies Office. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525. This work was authored (in part) by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding was provided by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Wind Energy Technologies Office. The views expressed in this article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledge that the U.S. Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes.

Available from: 2019-12-17 Created: 2019-12-17 Last updated: 2019-12-17Bibliographically approved

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