A planing craft is one of the most commonly used types for small high-performance vessels since it helps to mitigate the severe viscous friction between the ship hull and water. Therefore, it is essential to develop methods for quickly and accurately estimating the running attitude during the early design phase and in actual operational conditions. We propose the Extended Modified Logvinovich Model (EMLM) for water entry to address the flow separation problem when a wedge-shaped hull enters the free surface during motion. Utilizing a two-dimensional approximation, we analyzed the fundamental potential flow through mathematical techniques for unsteady flow. As a verification, we calculated the dynamic vertical force coefficient compared with CFD(computational fluid dynamics) based on BEM(boundary element method) and an analytic similarity solution, where the results demonstrated good agreement with experimental data for validation.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    The extended modified Logvinovich model: Application to the water entry of two-dimensional wedges


    Beteiligte:
    Yang Zhang (Autor:in) / Se-Myong Chang (Autor:in) / Deuk-Joon Yum (Autor:in)


    Erscheinungsdatum :

    2025




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    The extended modified Logvinovich model: Application to the water entry of two-dimensional wedges

    Zhang, Yang / Chang, Se-Myong / Yum, Deuk-Joon | Elsevier | 2025

    Freier Zugriff

    Performance comparison of ordinary-chine wedges with flat-chine wedges in water entry problem

    Malekmohammadi, Javad / Zeraatgar, Hamid / Hasheminasab, Hassan | Taylor & Francis Verlag | 2020


    Experimental study on water entry of twin wedges

    Hasheminasab, Hassan / Zeraatgar, Hamid / Moradi, Hashem et al. | SAGE Publications | 2020


    Numerical study on the water entry of curved wedges

    Yu, Pengyao / Li, Hui / Ong, Muk Chen | Taylor & Francis Verlag | 2018


    Recent developments on the water entry impact of wedges and projectiles

    Chaudhry, Ahmad Zamir / Shi, Yao / Pan, Guang | Taylor & Francis Verlag | 2022