intro story Coast / Estuary

Coast / Estuary

Coastal systems are among the most dynamic physical systems on earth and are subject to a large variety of forces. The morphodynamic changes occurring to coastlines worldwide are of great interest and importance. These changes occur as a result of the erosion of sediments, its subsequent transport as bed load or suspended load, and eventual deposition. 
Estuaries are partly enclosed water bodies that have an open connection to the coast. Estuaries generally have one or more branching channels, intertidal mudflats and/or salt marshes. Intertidal areas are of high ecological importance and trap sediments (sands, silts, clays and organic matter).
Within the Delft3D modelling package a large variation of coastal and estuarine physical and chemical processes can be simulated. These include waves, tidal propagation, wind- or wave-induced water level setup, flow induced by salinity or temperature gradients, sand and mud transport, water quality and changing bathymetry (morphology). Delft3D can also be used operationally e.g. storm, surge and algal bloom forecasting. 
On this discussion page you can post questions, research discussions or just share your experience about modelling coastal and/or estuarine systems with Delft3D FM. 




Sub groups
D-Flow Flexible Mesh
Cohesive sediments & muddy systems



Message Boards

issue with salinity / tracer advection around staircase shoreline

Edwin Wang, modified 4 Years ago.

issue with salinity / tracer advection around staircase shoreline

Youngling Posts: 8 Join Date: 12/17/13 Recent Posts

I have set up an estuary model using Z-model with salinity. I noticed that when the tide switched from flood to ebb, the salinity value at the staircase corner of the shoreline falls 4-5 psu than the surrounding grid. I have tried IUPW as well as Van Leer-2 for the advection scheme and obtained similar results. Has anyone else encountered similar issue and came up with the solution? Thanks.