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

Grazing of Phyto

veli yumruktepe, modified 6 Years ago.

Grazing of Phyto

Padawan Posts: 42 Join Date: 2/7/12 Recent Posts
Hi everyone,

I am having trouble setting a zooplankton compartment in ECO-BLOOM module. I guess I couldn't understand the concept behind "forced" zooplankton.

My goal is to set zooplankton so that they apply pressure term on phyto. So the questions are:

1) Modify preference, so that focused pressure is on phyto
2) Set different pressures on different phyto
3) What substances should be activated at least for a decent representation

I had a few trials setting the input concentration ranging from 0.005 to 1.
At every grid cell the model achieves those concentrations. So at the end there is a uniform picture. However, I do see changes such as chlfa levels respond. Yet I am not confident with what I have.

Any suggestions?