This study considers the evaluation of ship operational performance in real sea states using a time-domain approach. The current seakeeping-maneuvering coupling approach consists of two modules. First, in the seakeeping module, the time-domain three-dimensional Rankine panel method is applied to compute wave-induced forces and resultant ship motion. To validate this module, the computational results for wave drift force are compared with the existing experimental data for various forward speeds and regular wave conditions. Second, in the maneuvering module, the equations of motion with 4 degrees of freedom that are based on the Maneuvering Modeling Group are solved to simulate the ship navigation. The computed seakeeping and maneuvering values are immediately transferred between the two modules in the time domain, and so they are directly integrated. By applying this coupling method, a free-running simulation for a ship navigating along a given route is performed. The trajectory tracking method based on a proportional–derivative-based rudder control is adopted for straight course-keeping. Not only the speed loss but also the attitude for route maintenance is evaluated for various environmental load conditions. The simulation results are validated by a comparison with those of the existing free-running model test. Based on comparisons, environmental load effects and resultant quantities on operational performance are discussed.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Study on ship operation performance in actual seaways using time-domain free-running simulation


    Beteiligte:
    Lee, Jae-Hoon (Autor:in) / Kim, Yonghwan (Autor:in)


    Erscheinungsdatum :

    2021-11-01


    Format / Umfang :

    20 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    URANS-based simulation of ship propulsion in seaways

    Sulovsky, Ivan / Mewes, Simon / El-Moctar, Ould et al. | TIBKAT | 2023


    Critical Capsizing Conditions in Survivability Seaways

    Buckley, W. H. / Royal Institution of Naval Architects / Institution of Engineers and Shipbuilders in Scotland | British Library Conference Proceedings | 1997


    The effect of wind loads on the attainable ship speed on seaways

    Vettor, R. / Prpic-Orsic, J. / Soares, C. Guedes | TIBKAT | 2015


    A disturbance accommodating controller for roll motion of a ship in irregular seaways

    Kim, Sunghoon / Lee, Sangmoo / Rhee, K.P. | Tema Archiv | 2002