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Item type:Publication, Access status: without files , Multi-physics SPH simulation of complex marine-engineering hydrodynamic problemsThe paper reports on the applicability of the Smoothed-Particle- Hydrodynamics (SPH) method to complex, full-scale marine-engineering problems. Investigations include the installation process of a gravity foundation for wind turbines, jacket launching from a barge and propeller induced scouring of the waterway bottom. Supplementary validations for a sequence of fundamental cases indicate an encouraging predictive accuracy for the considered physical phenomena. Results demonstrate that SPH is able to address the problems featuring fluid/structure/soil-interaction and the hydrodynamic interplay between several floating bodies which pose challenges to traditional mesh-based solvers.Publicationtype: Journal Article108 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Smoothed-particle-hydrodynamics simulation of port hydrodynamic problems(2013); The thesis reports on the development of a numerical procedure based on the meshfree Smoothed-Particle-Hydrodynamics (SPH) approach for the simulation of complex port hydrodynamic problems including the interaction between ships, harbour facilities, water and soil. Corresponding constitutive models have been derived, implemented and validated. The regarded applications focus on scouring close to quay walls induced by active ship manoeuvring and propulsion devices. The developed procedure can further be applied to a wide range of problems from the field of marine and offshore engineering.Publicationtype: Doctoral Thesis1104 2025 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Analysis of towing-gear concepts using iceberg towing simulations(American Society of Mechanical Engineers (ASME), 2011-06); ; The paper reports on the development and application of an iceberg towing simulation procedure, whose efficiency allows an on-board use. Different solution techniques for the integration of the governing equations are compared with respect to performance and accuracy. Supplementary, the predictive accuracy of the employed rope models is outlined. Moreover, the merits of two different concepts for the towing gear set-up, i.e. utilizing a floating polypropylene part together with a submerged steel hawser or a single floating line, are discussed. Investigated application examples focus on towing medium sized icebergs with changes in ship speed. Based on a given towing speed profile, the acting forces and accelerations on the iceberg and the rope tension are simulated. Furthermore, the influence of modelling parameters, e.g. added hydrodynamic masses, is reported.Publicationtype: Conference Paper28 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Multiphysics SPH simulations with local particle coarsening(American Society of Mechanical Engineers (ASME), 2011-06); ; The paper reports on Smoothed-Particle-Hydrodynamics (SPH) for multi-physics water/soil interaction computations with dynamic particle coarsening. The procedure is supposed to be applied to harbour and ocean engineering hydrodynamic problems focussing on sediment scouring. This type of simulation usually implies large computational domains, fluid-soil interaction and complex geometries leading to large numbers of particles. To achieve a reasonable time-to-solution even for full-scale simulations, effective strategies to increase the computational performance are needed. We present a dynamic particle refinement/ coarsening strategy based on variable particle masses and spacings. The particle properties are updated in accordance to their current location. Validation studies refer to different water/ soil interaction test cases. Results obtained from the present refinement/coarsening approach show an encouraging predictive and computational performance.Publicationtype: Conference Paper134