As a relatively simple but effective way to mitigate the sloshing loads, perforated swash bulkheads can be considered. In the last decades, the development of meshless fully Lagrangian particle methods has provided effective means for the modeling, simulation and investigation of the sloshing mitigation mechanism by perforated bulkheads. Within this context, the present work is focused on the assessment of the sloshing loads taking into account the perforated bulkheads, mainly for the challenging cases involving large motions. For this purpose, an improved MPS method for the modeling of the sloshing problem is validated at first using the experimental data available from the literature. The validation case consists on a rectangular tank equipped with a perforated bulkhead under harmonic sway motions with different amplitudes and frequencies. Besides, models with the same total open-area ratio but different geometries were investigated. The results were analyzed in terms of the free surface elevation amplitude, pressure at the tank walls, transversal force and transversal added mass and damping for sway motion. As a result, free surface elevation, force and pressure and velocity fields are shown, illustrating the complex flow patterns with large free surface deformation, wave breaking, jet flow, flow separation at sharp edges of the perforated bulkhead and formation of vortices, as well as the induced added mass and damping.


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    Titel :

    Numerical Assessment of Sloshing Loads in Rectangular Tanks Equipped with Perforated Swash Bulkhead Under Large Excitations


    Weitere Titelangaben:

    Lecture Notes in Civil Engineering


    Beteiligte:
    Okada, Tetsuo (Herausgeber:in) / Suzuki, Katsuyuki (Herausgeber:in) / Kawamura, Yasumi (Herausgeber:in) / Bellezi, Cezar Augusto (Autor:in) / Cheng, Liang-Yee (Autor:in) / Okada, Tetsuo (Autor:in) / Arai, Makoto (Autor:in)

    Kongress:

    Practical Design of Ships and Other Floating Structures ; 2019 ; Yokohama, Japan September 22, 2019 - September 26, 2019



    Erscheinungsdatum :

    2020-10-06


    Format / Umfang :

    19 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch







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