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

file 'norm_end' expected to signal a correct swan calculation

George Victor, modified 1 Year ago.

file 'norm_end' expected to signal a correct swan calculation

Youngling Posts: 7 Join Date: 5/19/17 Recent Posts

While making a wave alone delft3d run in 64 bit windows platform, i encountered an error. The error showed in command running dialogue box is " file 'norm_end' expected to signal a correct swan calculation", while in the err file, the error reported is "Terminating error: Allocation problem: array AC2 and return code is 41".

I could find many suggestions on how to make the model run perfectly or to fix probable mistakes I could've done, like the stack overflow error.

However I'm confused very much with it, because with all the same files (nothing changed), I was able to run the model in a different computer(PC) with almost same configuration as the previous one. (kindly note that the model was perfectly run in the new PC, hence proving no stack overflow error)

I'd like to know what exactly could be the reason for this. Is this some kind of a bug or is it my PC configuration that cause the issue, or something else?

(Note that this system, which showed error was previously used to successfully make similar wave standalone runs)