SEDIMENT TRANSPORT AT THE BALTIC COAST USING A NON-HYDROSTATIC s-GRID MODEL

This paper presents the application of a new three- dimensional non-hydrostatic s-grid model on coastal sediment transport and morphological development under the effects of wave and current. Altering the initial conditions with coastal structures, harbors or groynes, will affect the sediment balance both locally and further away along the coastline. In this paper, an efficient numerical model is introduced to determine the impact of waves, current and structures on coastal morphology. The model resolves the 3D flow field, the free surface, as well as a movable bed boundary. The sediment transport is described via a mass balance equation that determines the development of the bed elevation.