intro story DELWAQ


DELWAQ is the engine of the D-Water Quality and D-Ecology programmes of the Delft3D suite. It is based on a rich library from which relevant substances and processes can be selected to quickly put water and sediment quality models together.

The processes library covers many aspects of water quality and ecology, from basic tracers, dissolved oxygen, nutrients, organic matter, inorganic suspended matter, heavy metals, bacteria and organic micro-pollutants, to complex algae and macrophyte dynamics. High performance solvers enable the simulation of long periods, often required to capture the full cycles of the processes being modelled.

The finite volume approach underlying DELWAQ allows it to be coupled to both the structured grid hydrodynamics of the current Delft3D-FLOW engine and the upcoming D-Flow Flexible Mesh engine (1D-2D-3D) of the Delft3D Flexible Mesh Suite (or even other models such as TELEMAC).

'DELWAQ in open source' is our invitation to all leading experts to collaborate in further development and research in the field of water quality, ecology and morphology using Delft3D. Feel free to post your DELWAQ related questions or comments in this dedicated forum space. If you are new to DELWAQ, the tutorial (in the user manual) is a good place to start. A list of DELWAQ related publications is available here.




Sub groups
D-Flow Flexible Mesh

Cohesive sediments & muddy systems


Message Boards

Problem with layers in delft3D

alessandro gerevini, modified 3 Years ago.

Problem with layers in delft3D

I'm trying to run a model with 7 layers in grid parameters, with sediment transport and tidal boundaries. The model can run, but when I watch the results, the velocity or water level are equal to zero after a few time step. I'm trying to set different forcing type of flow conditions (time series and astronomic), but the result doesn't change.
With only a one layer the model run without problem.
I think there are some parameters to add or change.
Thank you

Alessandro Gerevini
emmasmithdc Smithcdas, modified 9 Months ago.

RE: Problem with layers in delft3D

Youngling Posts: 3 Join Date: 5/9/20 Recent Posts
Thank you so much for this. I was into this is https://mxplayer.pro/ sue and tired to   tinker around to check if its possible but couldnt get it done. Now that i have seen the way you did it, thanks guys
Henderson Charlotte, modified 9 Months ago.

RE: Problem with layers in delft3D

Youngling Posts: 1 Join Date: 5/16/20 Recent Posts
If you are talking about the option called "Online coupling for WAQ" in the FLOW-GUI, I already tried that via the menu and via console, but unfortunately it didn't work out. I am using the open-source-version of Delft3D. My *.mdf-file has the flag "Waqmod = #Y#" and the times for writing the communications-file specified mcdvoice login