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

Crushing Delft3d-WAQ when entering data

Denis Afanasiev, modified 4 Years ago.

Crushing Delft3d-WAQ when entering data

Youngling Posts: 5 Join Date: 9/20/16 Recent Posts
I try to execute one of the WAQ Tutorials - Dispersion of E.Coli Bacteria. Delft3D-WAQ crushes when i change a properties of the discharge (changing to "Constant in time"). What is wrong?
Arjen Markus, modified 4 Years ago.

RE: Crushing Delft3d-WAQ when entering data

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts
I have tried it myself and no crash occurs - I have even tried it repeatedly.

Can you reproduce this? If so, can you tell us exactly what steps we should take to reproduce it?