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

the simulation of sediment erosion and deposition

Xiaoya Zhang, modified 9 Months ago.

the simulation of sediment erosion and deposition

Youngling Posts: 7 Join Date: 9/8/19 Recent Posts
Hi  everyone,
I am making a Delft3D two-dimensional sediment model(non-cohesive sediments) to simulate the changes of riverbed scouring and silting in the flume test, 
but the result is very small and does not conform to the test result. Is Delft3D suitable for the channel in the simulation flume? And I don't understand why the 
sediment transport parameter setting at the boundary has no effect on the final result of erosion and deposition.
Another problem is that in the simulation of sediment erosion and deposition, there will be concave bank deposition and convex bank erosion, there may not even be siltation,which is not consistent with the fact. Can someone help me solve this problem?
Any feedback would be very helpful.
Thanks in advance for your time and answer.
Willy Lucyta Nugraha, modified 3 Months ago.

RE: the simulation of sediment erosion and deposition

Youngling Posts: 2 Join Date: 9/29/19 Recent Posts
Hi, Xiaoya Zhang.
I also experienced the same problem. Have you found a solution to this problem?
Thankyou before.
I would be very respectful if you could tell

Willy Nugraha