Modelling the impact of large scale sediment dumping on the meso-scale hydro- and morphodynamics in the Western Scheldt

TL;DRAbstract

The current report aims to understand the hydro- and morphodynamic response of the Western Scheldt in a large sediment dumping operation. This study investigates the estuary’s response to sediment dumping in the Everingen channel area, which is located in the middle of the Scheldt Estuary, The Netherlands. Furthermore, it studies whether these sediment nourishments could indirectly feed the nearby-located Baarland tidal flat. In this study, two morphodynamic models for the Scheldt Estuary were set up, using both the newly developed D-Flow Flexible Mesh software, for the numerical modelling, and the more established Delft3D software. The new software allows a local refinement of the grid in the area of interest for better hydraulic and morphological analysis and shorter computational times. Both models were calibrated and validated for the local hydrodynamics, and subsequently used to study several sediment dumping scenarios. As the sediment module within D-Flow FM was not available yet

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