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Experimental analysis of a water column and structure heave velocity relationship for a floating oscillating water column wave energy device

Journal Article


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Abstract


  • This paper investigates the theoretical conclusions of a numerical analysis. The results are

    reproduced experimentally using a two-dimensional model in a wave flume. The experimental

    set-up is conducted by subjecting the model to waves with frequencies ranging from 0.2 to

    2 Hz. The heave velocities of the structure and water column are calculated by differentiating the

    displacement of each with respect to time. The experimental results confirm that the extent of

    the parametric relationship between the structure heave velocity and oscillating water column

    heave velocity is linearly related to the power output potential of the system and hence, can be

    used as a design tool for floating offshore wave energy converters. It has also been determined

    that the extent of the parametric function is maximised when the forcing frequency is between

    90 and 100% of the natural frequency of the water column of the system in question. This shows

    that the system efficiency is maximised when the waves cause resonance of the water column

    compared to the ocean wave.

Publication Date


  • 2018

Citation


  • Stanham, Y., McCarthy, T. J. & Stappenbelt, B. (2018). Experimental analysis of a water column and structure heave velocity relationship for a floating oscillating water column wave energy device. Australian Journal of Mechanical Engineering, 16 (3), 230-237.

Scopus Eid


  • 2-s2.0-85029415983

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1611&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/610

Number Of Pages


  • 7

Start Page


  • 230

End Page


  • 237

Volume


  • 16

Issue


  • 3

Place Of Publication


  • Australia

Abstract


  • This paper investigates the theoretical conclusions of a numerical analysis. The results are

    reproduced experimentally using a two-dimensional model in a wave flume. The experimental

    set-up is conducted by subjecting the model to waves with frequencies ranging from 0.2 to

    2 Hz. The heave velocities of the structure and water column are calculated by differentiating the

    displacement of each with respect to time. The experimental results confirm that the extent of

    the parametric relationship between the structure heave velocity and oscillating water column

    heave velocity is linearly related to the power output potential of the system and hence, can be

    used as a design tool for floating offshore wave energy converters. It has also been determined

    that the extent of the parametric function is maximised when the forcing frequency is between

    90 and 100% of the natural frequency of the water column of the system in question. This shows

    that the system efficiency is maximised when the waves cause resonance of the water column

    compared to the ocean wave.

Publication Date


  • 2018

Citation


  • Stanham, Y., McCarthy, T. J. & Stappenbelt, B. (2018). Experimental analysis of a water column and structure heave velocity relationship for a floating oscillating water column wave energy device. Australian Journal of Mechanical Engineering, 16 (3), 230-237.

Scopus Eid


  • 2-s2.0-85029415983

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1611&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/610

Number Of Pages


  • 7

Start Page


  • 230

End Page


  • 237

Volume


  • 16

Issue


  • 3

Place Of Publication


  • Australia