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. 
 

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

 

 

Message Boards

Cannot add or delete a new open boundary

U
Yuanyi Li, modified 2 Years ago.

Cannot add or delete a new open boundary

I have simulated the flow in a lake and I have got the input files for Water quality model using online coupling. Now I want to add or delete an open boundary in water quality model. But I cannot make it. Once I modified the existing open boundary, a warning (see the picture) was presented and the open boundaries were reset. 

Do you have any solution to this problem?

Thank you

 

AM
Arjen Markus, modified 2 Years ago.

RE: Cannot add or delete a new open boundary

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts

You cannot as there will be flow through that parr of the model. You change the length of the sections to refine the boundary conditions and you can simply zeroes in, but the boundary exists

 

AM
Arjen Markus, modified 2 Years ago.

RE: Cannot add or delete a new open boundary

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts

If there is no flow, then the dispersion may be turned off as well - this is a suboption in the Numerical Options datagroup. In that case there would be no transport at all and that explains the phenomenon you mention. (It has to do with detecting drying/flooding and thin dams)