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

Aggregating new substances' processes with Delft3D-WAQ

Ana Costa, modified 2 Years ago.

Aggregating new substances' processes with Delft3D-WAQ

Youngling Posts: 3 Join Date: 7/7/14 Recent Posts
Dear all,
I am having some trouble in the process of joint the processes of new substances created and the rest of WAQ. Basically, I am trying to include a new primary producer and when I intent afterwards to include a parameter in NH4 substances group (e.g. to refer to the uptake of nutrients from that primary producer), I select the already created NUTUPT Fortran and click create. However, that file still has the “insert code here ????”, as the new substances created from the scratch have. I was expecting to have to indicate only how that new term is included in the already developed formulation of the model, but it seems not to be the case. Thus, I am not quite sure if there is another way or I should insert the whole code for NH4 and include the new parameter (if so, is there any change to access to the original FORTRAN file created for that?).

Any suggestion/advice is most welcome,
Thank you in advance.
Ana Costa.
Michelle Jeuken, modified 2 Years ago.

RE: Aggregating new substances' processes with Delft3D-WAQ

Jedi Knight Posts: 156 Join Date: 1/21/13 Recent Posts
Hi Ana,

If you are looking for the source code of all the processes, you can find it here (you need your oss account credentials to log in):

Attached is an example of the nutrient uptake.

You can use the PLCT to extent the inputs and outputs, or use the more text-based proces library tools here with the input/output tables for the processes:

See waqpb_help.bat for a very brief instruction.

Be aware that if you put extra input in a process, you will have to shift the outputs too!



Ana Costa, modified 2 Years ago.

RE: Aggregating new substances' processes with Delft3D-WAQ

Youngling Posts: 3 Join Date: 7/7/14 Recent Posts
Hi Michelle.

Thank you for your reply. It really helped a lot.