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    Validation of a CFD-Based Numerical Wave Tank Model of the 1/20th Scale Wavestar Wave Energy Converter


    Windt, Christian and Faedo, Nicolás and García-Violini, Demián and Peña-Sanchez, Yerai and Davidson, Josh and Ferri, Francesco and Ringwood, John (2020) Validation of a CFD-Based Numerical Wave Tank Model of the 1/20th Scale Wavestar Wave Energy Converter. Fluids, 5 (112). ISSN 2311-5521

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    Abstract

    Numerical wave tanks (NWTs) provide efficient test beds for the numerical analysis at various stages during the development of wave energy converters (WECs). To ensure the acquisition of accurate, high-fidelity data sets, validation of NWTs is a crucial step. However, using experimental data as reference during model validation, exact knowledge of all system parameters is required, which may not always be available, thus making an incremental validation inevitable. The present paper documents the numerical model validation of a 1/20 scale Wavestar WEC. The validation is performed considering different test case of increasing complexity: wave-only, wave excitation force, free decay, forced oscillation, and wave-induced motion cases. The results show acceptable agreement between the numerical and experimental data so that, under the well-known modelling constraints for mechanical friction and uncertainties in the physical model properties, the developed numerical model can be declared as validated.

    Item Type: Article
    Additional Information: Funding: Funding: The research leading to these results has received funding from the European Union Horizon 2020 Framework Programme (H2020) under grant agreement No. 731084. C. Windt, D. Garcia-Violini, Y. Peña-Sanchez, and N. Faedo are supported by the Science Foundation Ireland under Grant No. 13/IA/1886. J. Davidson is supported by the Higher Education Excellence Program of the Ministry of Human Capacities in the frame of Water science & Disaster Prevention research area of Budapest University of Technology and Economics (BME FIKP-VÍZ) and by the National Research, Development and Innovation Fund (TUDFO/51757/2019-ITM, Thematic Excellence Program). © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Cite as: Windt, C.; Faedo, N.; García-Violini, D.; Peña-Sanchez, Y.; Davidson, J.; Ferri, F.; Ringwood, J.V. Validation of a CFD-Based Numerical Wave Tank Model of the 1/20th Scale Wavestar Wave Energy Converter. Fluids 2020, 5, 112. https://doi.org/10.3390/fluids5030112
    Keywords: model validation; numerical wave tank; CFD; OpenFOAM; wave-structure interaction;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research
    Faculty of Science and Engineering > Electronic Engineering
    Item ID: 14335
    Identification Number: https://doi.org/10.3390/fluids5030112
    Depositing User: Professor John Ringwood
    Date Deposited: 14 Apr 2021 14:05
    Journal or Publication Title: Fluids
    Publisher: MDPI
    Refereed: Yes
    Funders: European Union’s Horizon 2020 research and innovation programme, Science Foundation Ireland (SFI), Ministry of Human Capacities, Hungary
    URI:

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