This article presents a weakly nonlinear time domain Rankine source boundary element method to calculate wave-induced ship motions. Radiation forces were calculated using convolution integrals, whereas Froude–Krylov and hydrostatic forces were obtained from ship positions relative to the instantaneously wetted surface. The nonlinear rigid body motion equations were coupled with the flow equations to enable reliable predictions also in finite amplitude (steep) waves. A system of soft springs prevented excessive low-frequency motions of the ship, but allowed it to move in six degrees of freedom. Numerical results of a 14,000TEU container ship at two different forward speeds in oblique waves of different steepness were validated against comparable ship motions obtained from available experimental towing tank measurements and a frequency domain method. The influence of wave steepness and wave heading on ship motions was of particular interest.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Rankine source time domain method for nonlinear ship motions in steep oblique waves


    Contributors:

    Published in:

    Publication date :

    2019-04-03


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Nonlinear ship motions by a Rankine panel method

    Huang, Yifeng | DSpace@MIT | 1997

    Free access

    Time domain ship motions by a three-dimensional Rankine panel method

    Kring, David C. (David Charles) | DSpace@MIT | 1994

    Free access

    Numerical Research on Ship Motions in Oblique Irregular Waves

    Wu, Ming / Shi, Ai-Guo / Wang, Zuo-Chao et al. | Tema Archive | 2013


    Ship motions in oblique seas

    Lewis, E.V. / Numata, E. | Engineering Index Backfile | 1960


    Theoretical Modeling of Ship Motions and Capsizing in Large and Steep Waves

    Grochowalski, S. / Hsiung, C. C. / Huang, Z. J. et al. | British Library Conference Proceedings | 1999