Numerical Approaches for the Evaluation of Sediment Transport Mechanisms on a Shallow Sloping Sea Bottom
| Autor: | Afentoulis, Vasileios, Papadimitriou, Andreas, Tsoukala, Vasiliki, Benoit, Michel |
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| Přispěvatelé: | National Technical University of Athens [Athens] (NTUA), Institut de Recherche sur les Phénomènes Hors Equilibre (IRPHE), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), École Centrale de Marseille (ECM), Benoit, Michel |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere [SDU.OCEAN] Sciences of the Universe [physics]/Ocean Atmosphere Coastal hydrodynamics [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Numerical simulation Sediment transport Morphodynamics [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] |
| Zdroj: | First International Scientific Conference on Design and Management of Harbor, Coastal and Offshore Works First International Scientific Conference on Design and Management of Harbor, Coastal and Offshore Works, May 2019, Athens, Greece |
| Popis: | International audience; The seabed evolution due to wave-current interaction is examined in the case of a gently sloping bottom in a shallow water coastal area. In this study, an attempt has been made to estimate bed level changes over a time period of 96 hours, under accretive and erosive wave sequences. A numerical model based on the non-linear shallow water equations (NSWE) is utilized in order to simulate the wave propagation and hydrodynamic conditions. Two different approaches are used for the detailed investigation of sediment transport and seabed-fluid interactions. It is shown that the numerical approximation performs reasonably well, as the erosive sequence is characterized by an offshore sediment movement while the sandbar is driven shoreward under accretive wave conditions. The simulation is carried out on a variable coastal bathymetry corresponding to the wave basin experiments of Michallet et al. (2013) at LHF facility (Grenoble INP, France). The obtained results are qualitatively compared with laboratory observations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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