A seakeeping analysis in the frequency domain is presented to predict the motion response of an ALV (air-lifted vessel) in waves. The ALV is supported by pressurised air in two separate cushion chambers; the pressure variation in the cushions has a significant effect on the motions of the vessel. The adiabatic gas law is used to couple cushion pressure and the free-surface elevation of water inside the chamber. Attention is focused on the waves generated by the pressure, and a method is presented to compute the corresponding free-surface elevation. New numerical schemes are proposed for calculating the three-dimensional free-surface elevation for the four wave numbers. Numerical results of the free-surface elevation, escape area, escape volume and motion responses of the ALV are provided.


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    Title :

    A seakeeping analysis method for an air-lifted vessel


    Additional title:

    Eine Seeverhaltens-Analysis-Methode für ein Luftkissenschiff


    Contributors:
    Xie, Nan (author) / Vassalos, D. (author) / Jasionowski, A. (author) / Sayer, P. (author)

    Published in:

    Ocean Engineering ; 35 , 14-15 ; 1512-1520


    Publication date :

    2008


    Size :

    9 Seiten, 11 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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