A numerical model based on the Discrete Vortex Method has been developed for the analysis of flow separation along the ship, which is represented by the slender body approximation. The trailing vortices are modelled by a series of transverse two-dimensional multi-vortex solutions marching longitudinally down the hull. The numerical model allows the study of separated flow around realistic ship hulls that do not have well-defined separation points. The vortex calculations are carried out using a grid based multi-vortex method that incorporates a generalised transformation method that accurately represents conventional hull shapes. The effects of varying the drift angle and yaw rate on a ship’s manoeuvring characteristics are presented for the British Bombardier moving with both drift and turning motions. Predicted hydrodynamic forces and their distribution along the hull agree well with experimental studies.


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    Title :

    The Estimation of the Hydrodynamic Forces acting on a Manoeuvring Ship Using the Discrete Vortex Method



    Published in:

    Publication date :

    2003-04-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Estimation of Hydrodynamic Forces Acting on a Ship in Manoeuvring Motion

    Nonaka, K. / Memorial University; Fisheries and Marine Institute / National Research Council; Institute for Marine Dynamics | British Library Conference Proceedings | 1993


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