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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


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Strategies for managing reservoir sedimentation

Camila Bergmann Goulart, modified 14 Days ago.

Strategies for managing reservoir sedimentation

Youngling Posts: 2 Join Date: 8/14/18 Recent Posts
I’m an MSc student and a new user of Delft3D-FLOW. In my thesis, I will simulate strategies for managing reservoir sedimentation, but I’m having some trouble. 
I’m trying to model sediment transport in a reservoir that has the spillway and the power station in different locations (there is a channel that leads to the turbines). My goal is to simulate flushing and pass-through, so I’m interested in downstream sediment concentration values. My study area goes from the reservoir I’m interested in, until another reservoir that is located downstream.

To simulate the spillway and the power station, I used a hydraulic structure (in-out) combined with a thin dam. However, to do the simulation with sediment it’s necessary to inform sediment concentration values that are released by these structures, but that is, in fact, my objective to find out. Is there a way to make the program recalculate these values, instead of assuming the values I determine? Attached are the base files of the simulation.