Ice al traffic 53/10/2024 For all test cases, we demonstrate how mesh movement methods can be used to reduce discretisation error and computational cost. In order to be able to simulate sediment transport in wet-dry domains, a new conservative discretisation approach has been developed as part of this work, as well as a sediment slide mechanism. This new capability is demonstrated using test cases that exhibit complex evolving bathymetries and have moving wet-dry interfaces. Mesh movement methods are particularly well-suited to coastal problems as they allow the mesh to move in response to evolving flow and morphology structures. In this work, we apply mesh movement methods to a depth-averaged hydro-morphodynamic model for the first time, in order to tackle both these issues. The models can be required to resolve spatial scales ranging from sub-metre to hundreds of kilometres and are computationally expensive. Hydro-morphodynamic modelling is an important tool that can be used in the protection of coastal zones. Weller H, Cotter CJ, Piggott MD et al., 2022, Multi-scale hydro-morphodynamic modelling using mesh movement methods, GEM: International Journal on Geomathematics, Vol: 13, ISSN: 1869-2672
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