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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


Message Boards

Unable to find module built in Open PLCT

Nur Hanisah Sukarji, modified 1 Year ago.

Unable to find module built in Open PLCT

Youngling Posts: 1 Join Date: 1/30/18 Recent Posts

I am trying to create a new process in Water Quality through Open PLCT. I have build the DLL on Visual Studio 2017 and Intel Parallel Studio XE 2018 and then installed it as proc_def.dat and D3Dwaq_OpenPL.dll on the GUI. However, when I try to run the scenario (with the process), the requested module (CELLQUOTA) is not found, as shown below. Did I perhaps not build/install the DLL correctly?

Any help is greatly appreciated.

runid: com-1x1x1

Parallel processing with 1 processor(s)


ERROR : requested module not in process library DLL
module : CELLQUOTA
dll handle: 0
Stopped with error code : 1
Le Vu Bao, modified 1 Year ago.

RE: Unable to find module built in Open PLCT

Youngling Posts: 12 Join Date: 1/15/18 Recent Posts

hi, I have the same problem when try to modify the WAQ standard process and override back to ...waq/default folder (ofcourse with my D3Dwaq_OpenPL.DLL too) But this error still happen. Have you fix this problem?