Migration status

  • Home Page: Activity map.

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

Using HYCOM Data as Boundary

Mansur Ali Jisan, modified 3 Years ago.

Using HYCOM Data as Boundary

Youngling Posts: 8 Join Date: 1/19/14 Recent Posts

I am curious to know whether it is possible to use the HYCOM data as boundary input in Delft3D? I looked at some scripts at open earth tools but not sure which way should I proceed? Any suggestions will be very helpful for my research.

Fernando Barreto, modified 2 Years ago.

RE: Using HYCOM Data as Boundary

Padawan Posts: 74 Join Date: 6/21/12 Recent Posts
Hi Mansur,

yes, it is possible to use HYCOM Data as boundary condition to Delft3D. Actually, one can use almost any data to input a model, the problem is which type of boundary condition to apply, and how to create the boundary files. Regarding Hycom, the most suitable boundary condition is Riemann, in which one uses normal current velocity (V component in north/south and U component in east/west if your delft3d grid is not rotated in relation to Hycom's) and elevation (hycom elevation plus tide, for instance) to build Riemann invariants. To date, I don't know if there is a software to generate .bct and .ini file from HYCOM. I have generated my own code, and aim to make them available in a near future (they are Ready, but still very confusing).


Baogan Liao, modified 6 Months ago.

RE: Using HYCOM Data as Boundary

Youngling Posts: 16 Join Date: 1/15/19 Recent Posts

Hi Fernando.

I wonder if the software for generating  .bct and .ini file from HYCOM is available.