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

Position dependent inputs for "Process parameters"

Gholamreza Shiravani, modified 1 Year ago.

Position dependent inputs for "Process parameters"

Padawan Posts: 65 Join Date: 6/25/16 Recent Posts
Dear Delwaq developers/users,
in "Process parameter" of .scn-file (scenario file) of Delwaq, we should define values for Delwaq variables. Here we have the possibility to define  values as a time-series using: Edit data/properties/Data properties/Time/Piecewise linear timeseries. Could anyone tell me how can I define a position-dependent variable, which accepts generated position-dependent-files using QUICKIN? 
Orlando Haynes, modified 7 Months ago.

RE: Position dependent inputs for "Process parameters"

Youngling Posts: 1 Join Date: 9/11/20 Recent Posts
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Amaal Fathy, modified 1 Month ago.

RE: Position dependent inputs for "Process parameters"

Youngling Posts: 11 Join Date: 3/26/16 Recent Posts
Hello Gholamreza,
I don't know if you found a solution. Anyway, you may create a depth file using QUICK IN tool then re-write the data in the depth file according to the number of layers you model in case of 3d modelling. Afterwards, you need to change the extension of your depth file into .q3d or the extension that will be read in DELWAQ input file.