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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

d_hydro.exe not working

Rama Karri, modified 2 Years ago.

d_hydro.exe not working

Youngling Posts: 1 Join Date: 5/18/17 Recent Posts
I just recd a trail version of GUI with 1 year license.
When I use the sample case from tutorial and run the simulation,
it says "Executable d_hydro.exe not found on directory C:/program files/Deltares/Delft3D 4.02.03/win64/flow2d3d/bin

I search some earlier forumns.. They say, we need to download the source code and compile it. It was very tricky and videos are confusing..
Hence, i requested for Inbuilt GUI.

So where can we download the d_hyrdo.exe file

looking forward for a quick solution to go through

with best regards

Dr. Rao
Qinghua Ye, modified 2 Years ago.

RE: d_hydro.exe not working (Answer)

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
Dr. Rao,

You need to compile the source code and put them in the correct folders, which is the open source version and you can get it for free and full functioning. There is another version, which might cost a few thousand euro and you can get an installation package. That is complete packed version, and just need a few click to install, then you get a complete system isnistalled in your system. Pls contact sales@deltaressystems.nl for more details.


Daniel Iwugo, modified 2 Years ago.

RE: d_hydro.exe not working

Youngling Posts: 2 Join Date: 9/9/17 Recent Posts
Dear Mr Qinghua,

How do we compile the source code?
And by source code do you mean the standalone Delft3d Dashboard? I downloading and running the application would be sufficient.