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

ERROR: Improper location of open boundary and tdat error

Aysha Jennath, modified 1 Year ago.

ERROR: Improper location of open boundary and tdat error

Youngling Posts: 1 Join Date: 12/6/18 Recent Posts


I am new at Delft 3d and has only been using it for 2 months to analyse the sediment transport in small coral Lakshadweep islands in the Indian Ocean. Over the course of it I have never been able to run the model, the error being water level too high. The bathymetry was 1arc minute data and I thought that the problem was with coarseness of the data as my grid was more fine and I couldnt refine the grid without losing details of the coast.

Afterwards I used a 30 arc second data and grid of the same size and now the model has tdatmain error and diagnostic file showed improper boundary location error. I have presentation next week and I dont know how to solve this. I am attaching my grid, enc, dep and mdf files here. Can anyone find out whats the problem!!