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    Contribution to the CCP-WSI Blind Test Series 2: CFD-based numerical wave tank experiments employing an impulse source wave maker


    Windt, Christian and Davidson, Josh and Schmitt, Pál and Ringwood, John (2019) Contribution to the CCP-WSI Blind Test Series 2: CFD-based numerical wave tank experiments employing an impulse source wave maker. European Tidal and Wave Energy Conference Proceedings (1265). ISSN 2706-6940

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    Abstract

    During the development and optimisation of wave energy converters, numerical wave tanks are useful tools, providing detailed insight into the hydrodynamic performance of devices. Specifically, computational fluid dynamics based numerical wave tanks can deliver highfidelity, high resolution, results for a wide range of test conditions. However, CFD-based numerical wave tanks come at significant computational cost and require more man-hours during model setup, compared to lower-fidelity, frequency domain based models. The computational costs can only be significantly decreased by improving the numerical solvers, or increased expenditure on computational power. The required man-hours for the model setup, however, can be reduced by streamlining the setup of CFDbased numerical wave tanks. To this end, the formulation of best-practice guidelines and benchmark test cases can expedite this streamlining. A step towards such bestpractice guidelines, and, furthermore, towards an increased confidence in CFD-based numerical wave tanks, are blind tests. This paper presents the CFD-based numerical wave tank used for the authors’ contribution to the Collaborative Computational Project in Wave Structure Interaction Blind Test Series 2. In the employed numerical wave tanks, a recently developed, self-calibrating, impulse source wave maker is implemented for the wave generation [1]. In addition to the required data for the submission to the blind test, the paper contains preliminary studies on the necessity of turbulence modelling, spatial and temporal convergence studies, as well as results for the numerical wave maker calibration.

    Item Type: Article
    Additional Information: Funding: This paper is based upon work supported by Science Foundation Ireland under Grant No. 13/IA/1886. The research in this paper was also 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-V´IZ).
    Keywords: Collaborative Computational Project; Wave Structure Interaction; CCP-WSI; Blind Test; Impulse wave maker; CFD based; numerical wave tank; OpenFOAM;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research
    Faculty of Science and Engineering > Electronic Engineering
    Item ID: 14289
    Depositing User: Professor John Ringwood
    Date Deposited: 31 Mar 2021 14:48
    Journal or Publication Title: European Tidal and Wave Energy Conference Proceedings
    Publisher: EWTEC
    Refereed: Yes
    Funders: Science Foundation Ireland (SFI), Ministry of Human Capacities, Hungary
    URI:

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