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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


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S1 and S2 outputs

Fabricio Fiengo, modified 5 Years ago.

S1 and S2 outputs

Youngling Posts: 8 Join Date: 10/14/14 Recent Posts

Currently, I have some problems interpreting the outputs of the his output file for the layer S1 and S2. I did a trial with Cd using the low-sorption and slow-desorption options. What I see is:
For example the outputs of total mass Cd in layer S1 (g/m2) describe a nice curve (maximum value ~1600 g/m2), while for Cd in S1 (g) the results are negative. I assume that the last one is:

Cd in S1 is afunction of total mass Cd in layer S1 (g/m2) (grid size 10000m2)

Similarly for the total mass Cd in layer S2 (g/m2) is equal to 0, while for Cd in layer S2, I got positive values (maximum value ~12000 g).
If I understand well Cd in S1 and total mass Cd in layer S1 are related values (the same for S2), then, why do I have these inconsistencies?

Thank you very much in advanced

Best regards


PS. You can find attached the .his file