A time-domain second-order method developed recently to study nonlinear wave diffraction around fixed bodies is extended to account for body motions in otherwise still water. The free surface boundary conditions and the radiation condition are satisfied to second order by a numerical integration in time, and the field solution at each time step is obtained by an integral equation method based on Green's theorem. For the two-dimensional case of a semi-submerged circular cylinder undergoing oscillatory heave motions, the computed hydrodynamic forces at first and second order are compared with previous theoretical and experimental results and a favorable agreement is indicated. The performance of the present method as compared to more conventional methods is discussed and the importance of second-order effects in the evaluation of the hydrodynamic forces to second order is also highlighted.


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    Title :

    Time-domain solution for second-order wave radiation


    Additional title:

    Zeitbereichsloesung zweiter Ordnung fuer die Wellenausbreitung


    Contributors:
    Cheung, K.F. (author) / Isaacson, M. (author)

    Published in:

    Marine Structures ; 6 , 2/3 ; 241-258


    Publication date :

    1993


    Size :

    18 Seiten, 6 Bilder, 16 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Time-domain Solution for Second-order Wave Radiation

    Cheung, K. F. / Isaacson, M. / Ng, J. Y. T. | British Library Online Contents | 1993


    Time-domain second-order wave radiation in two dimensions

    Isaacson, M. / Ng, J.Y.T. | Tema Archive | 1993


    Second-order wave diffraction

    Huther, M. | Tema Archive | 1987


    Review of second-order wave structure

    Caughey, D. A. / Hayes, W. D. | NTRS | 1968