Multi-scale hydro-morphodynamic modelling using mesh movement methods

Abstract Hydro-morphodynamic modelling is an important tool that can be used in the protection of coastal zones. The models required to resolve spatial scales ranging from sub-metre hundreds kilometres and are computationally expensive. In this work, we apply mesh movement methods a depth-averaged hydro-morphodynamic model for first time, order tackle both these issues. Mesh particularly well-suited problems as they allow move response evolving flow morphology structures. This new capability demonstrated using test cases exhibit complex bathymetries have moving wet-dry interfaces. able simulate sediment transport domains, conservative discretisation approach has been developed part well slide mechanism. For all cases, demonstrate how reduce error computational cost. We also show optimum parameter choices monitor functions fairly predictable based upon physical characteristics case, facilitating use on further problems.