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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


Message Boards

a coupled flow and wave model

ren jianbo, modified 3 Years ago.

a coupled flow and wave model

Youngling Posts: 17 Join Date: 7/17/11 Recent Posts
hi,everyone, i have a question, can you help me.

I made a coupled flow and wave model, and i want to output wave-induced stress and current stress individually, how to add additional keywords in mdf file ?
Adri Mourits, modified 3 Years ago.

RE: a coupled flow and wave model

Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Ren Jianbo,

It is not possible to write both the wave-induced stress and current stress to output files. You have two options:
1. Add it yourself to the source code; it's open source.
2. Ask Deltares to implement it for you.

The usage of wave parameters in Delft3D-FLOW is very delicate and affects different terms and processes. Be careful with it.