Numerical simulations of turbulent flows around KCS have been performed to study the sensitivity of ship resistance to wall-adjacent grids and disclose the influence of near-wall treatment on the sensitivity of ship resistance. The resistance coefficients of viscous and pressure forces were compared when using realizable k-ε and SST k-ω turbulence models in structured and unstructured grids, respectively. The calculation of friction velocity was found to be mainly responsible for the reduction of viscous and total resistances when the height of wall-adjacent cells increased. Since the assumption of equilibrium state between turbulent production and dissipation was not met in a bulbous bow, it was more reasonable to iteratively calculate the friction velocity from empirical laws of the wall for near-wall treatment rather than explicitly estimate it from the turbulent kinetic energy.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    The sensitivity of ship resistance to wall-adjacent grids and near-wall treatments


    Beteiligte:
    Dong Woo Park (Autor:in) / Sang Bong Lee (Autor:in)


    Erscheinungsdatum :

    2018




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Ship balcony partition wall and ship

    LI PINGJUN / LAN SIDONG / ZHAO YANJUN et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Wall body unit for ship, wall body and ocean engineering ship

    REN WEI / WANG SHAOHUA / XIE XIE et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    SHIP WITH WATERTIGHT WALL

    LUDWIGSSON ROBERT / HELLANDER KLAS / JONSSON DAN | Europäisches Patentamt | 2018

    Freier Zugriff


    Blast wall for ship

    JEON SANG BAE / KIM JUNG / JEON JUNHWAN | Europäisches Patentamt | 2022

    Freier Zugriff