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Morphodynamic modelling of the Belgian Coastal zone: Sub report 4. Cross-shore transport modelling with GAIA: Ostend model Kolokythas, G.; Breugem, A.; De Maerschalck, B. (2024). Morphodynamic modelling of the Belgian Coastal zone: Sub report 4. Cross-shore transport modelling with GAIA: Ostend model. Version 4.0. FH reports, 21_104_4. Flanders Hydraulics: Antwerp. VII, 69 pp. https://dx.doi.org/10.48607/280 Deel van: FH reports. Flanders Hydraulics: Antwerp. , meer

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Open Repository 411078 [ OWA ]
Documenttype: Projectrapport

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Trefwoorden

Hydraulics and sediment > Hydrodynamics > Tides Hydraulics and sediment > Hydrodynamics > Waves Hydraulics and sediment > Sediment > Sediment transport Numerical modelling

Author keywords

Coastal modelling, Cross-shore sediment transport

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Project	Top | Auteurs
Beheer bestek WL_2021_23 - Morfologisch onderzoek Kust, Scheldemonding en Westerschelde: Scaldis-Kust, meer

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Auteurs		Top
Kolokythas, G. Breugem, A. De Maerschalck, B., meer

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Abstract

The presented report gives an comprehensive overview of the implementation of different cross-shore processes in GAIA, the sediment transport and bed-update module of the TELEMAC-MASCARET software suit: Surface roller energy generated in the breaking wave front Return flow generated to counterbalance the so-called Stokes drift Wave non-linearity, i.e. wave skewness and wave asymmetry Wave breaking turbulence generated in the collapsing wave front In order to test the implementation of these cross-shore processes, a 2D-morphodynamic model for the central part of the Belgian coast, the so-called Ostend model, is build. The modelling strategy involves online coupling of the TELEMAC-2D, TOMAWAC and GAIA modules using the TEL2TOM and the implementation of Neumann conditions at the lateral boundaries of the hydrodynamic model. The model is driven by measured water levels and wind- and wave-forcing, and is validated by water level and near-shore current and wave measurements. The model is used for testing various calibration parameters for the cross-shore sediment transport modelling and finally validated against measured bed changes over the period 2016-2017. In general the results of Ostend model with cross-shore current included, show good agreement to the measured profiles. The results show that the implementation of the cross-shore processes are an added value in the modelling of the near- and onshore bed evolution.

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