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    Item type:Publication, Access status: without files ,
    Reducing engine-induced ship noise at source
    (Technische Universität Hamburg, 2025)
    Donderer, Matthias
    ;
    Ehlers, Sören
    Publicationtype: Doctoral Thesis
      48
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    Sideways launching of ships using fluid-structure interaction
    (2024)
    Ulbertus, Albert
    ;
    Ehlers, Sören
    Within this work a simulation-based approach using fluid-structure interaction (FSI) for the assessment of sideways launching of ships based on an Arbitrary-Lagrangian-Eulerian (ALE) approach is proposed. The results of the ALE approach are compared to common approaches (use of rules / regulations, analytical formulations, model tests and simulations without FSI). Based on the ALE approach two different load mechanism acting upon a ship can be observed: the impact with the water surface and the deceleration of the hull structure. The second load mechanism could only be observed based on the proposed ALE approach. In addition, the influence of different parameters of a sideways launching process is investigated.
    Publicationtype: Doctoral Thesis
      81  96
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    Item type:Publication, Access status: without files ,
    Analysis of surface corrosion morphology of steel structures
    (Technische Universität Hamburg, 2022)
    Nugroho, Firman Ady
    ;
    Ehlers, Sören
    Publicationtype: Doctoral Thesis
      62