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    A Critical Comparison Between Parametric Approximation Methods for Radiation Forces in Wave Energy Systems


    Peña-Sanchez, Yerai and Faedo, Nicolás and Ringwood, John (2019) A Critical Comparison Between Parametric Approximation Methods for Radiation Forces in Wave Energy Systems. In: Proceedings of the Twenty-ninth (2019) International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers (ISOPE), pp. 174-181. ISBN 9781880653852

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    Abstract

    Within the ocean engineering literature, and, particularly, within the wave energy research and hydrodynamic fields, different methods can be found that aim to identify a finite-order parametric model to represent the radiation force convolution term of the well-known Cummins’ equation. Such an approximation process is required for several reasons: firstly, to obtain a mathematical representation that requires low computational effort and, secondly, to ease the model-based control/estimation design procedures. Recently, a new Matlab toolbox has been released to obtain a parametric approximation of such a convolution term based on moment-matching. This paper aims to compare this new moment-matching-based application, with other well-established software. This comparison is based not only on the quality of the approximation, but also on the preservation of the intrinsic physical properties of radiation forces. Three different case studies are used as a basis for the comparison.

    Item Type: Book Section
    Additional Information: Funding: This material is based upon works supported by Science Foundation Ireland under Grant no. 13/IA/1886. Cite as: Peña-Sanchez, Yerai, Faedo, Nicolá, and John V. Ringwood. "A Critical Comparison Between Parametric Approximation Methods for Radiation Forces in Wave Energy Systems." Paper presented at the The 29th International Ocean and Polar Engineering Conference, Honolulu, Hawaii, USA, June 2019.
    Keywords: Radiation forces; Parametric form; Model order reduction; Frequency-domain identification; Time-domain identification;
    Academic Unit: Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research
    Faculty of Science and Engineering > Electronic Engineering
    Item ID: 14274
    Depositing User: Professor John Ringwood
    Date Deposited: 29 Mar 2021 16:01
    Publisher: International Society of Offshore and Polar Engineers (ISOPE)
    Refereed: Yes
    Funders: Science Foundation Ireland (SFI)
    URI:

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