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

d3d_qp error to read Delwaq-results

Gholamreza Shiravani, modified 1 Year ago.

d3d_qp error to read Delwaq-results

Padawan Posts: 65 Join Date: 6/25/16 Recent Posts
Dear Markus,
I used the "multiple copy" feature of Delwaq to include the fractions of IMs. Delwaq1 and 2 are run successfully but using Matlab-Toolbox to read results (d3d_qp) does not work for fractions, however it works for all other substances like continuity. The error after selecting the fractions, for example IM1; fraction1, is :
"Caught in qp_getdata/griddata:
Dot indexing is not supported for variables of this type.
In private\d3d_waqfil>getsize at line 1860
In private\d3d_waqfil at line 228
In qp_getdata>hvslice at line 531
In qp_getdata at line 423
In private\qp_plot at line 71
In d3d_qp>d3d_qp_core at line 1970
In d3d_qp at line 44"
 Could you tell me the reason and how can I solve this error?
Many thanks,
Gholamreza Shiravani, modified 1 Year ago.

RE: d3d_qp error to read Delwaq-results

Padawan Posts: 65 Join Date: 6/25/16 Recent Posts
Hi Dear Markus,
I found the solution. The normal .ada and .hda files do not work, but using map-file and some tricks the problem was solved.
Thanks again,