Performance of wave-energy devices of the OWC (oscillating water column) type is greatly enhanced when a resonant condition with the forcing waves is maintained. The natural frequency of such systems can in general be tuned to resonate with a given wave forcing frequency. In this paper we address the tuning of an OWC sea-water pump to polychromatic waves. We report results of wave tank experiments, which were conducted with a scale model of the pump. Also, a numerical solution for the pump equations, which were proven in previous work to successfully describe its behavior when driven by monochromatic waves, is tested with various polychromatic wave spectra. Results of the numerical model forced by the wave trains measured in the wave tank experiments are used to develop a tuning criterion for the sea-water pump.


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    Title :

    On the tuning of a wave-energy driven oscillating-water-column seawater pump to polychromatic waves


    Additional title:

    Über die Abstimmung einer durch Wellenenergie angetriebenen Meerwasserpumpe mit schwingender Wassersäule mit polychromen Wellen.


    Contributors:

    Published in:

    Ocean Engineering ; 34 , 17-18 ; 2374-2384


    Publication date :

    2007


    Size :

    11 Seiten, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English