Home_intro

intro story DELWAQ

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.

** PLEASE TAG YOUR POST! **

  

 

Sub groups
D-Flow Flexible Mesh
DELWAQ
Cohesive sediments & muddy systems

 

Message Boards

DELWAQ coupled with z-layer Delft3D FLOW model?

U
Zhanxian Wang, modified 3 Years ago.

DELWAQ coupled with z-layer Delft3D FLOW model?

Hello, all,

I am curious to know that if anyone ever has successfully used DELWAQ coupled with Delft3D z-layer FLOW model? If so, I need some serious help on how to make the model work? Please see my recent post about my struggle with the z-layer DELWAQ model.

Thanks in advance!
Jonathan
delwaq z-layers
Ben Williams, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model?

Jedi Knight Posts: 114 Join Date: 3/23/11 Recent Posts
Hi Johnathan,

Have you thought about purchasing an appropriate level of maintenance and support package?

Cheers,

Ben
U
Zhanxian Wang, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model?

Hi, Ben,

Our company already has purchased a maintenance and support package. Is there other ways to get technical support from Deltares in addition to this forum?

Thanks,
Jonathan
AM
Arjen Markus, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model?

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts
Please be patient - I said in the other thread that z-layers and domain decomposition are an unusual set-up, but I was wrong. In fact a year ago I was looking into a very similar model set-up, but the problem there was not this numbering of boundary cells, instead it was about the interpretation of the water quality processes and the subsequent results. So, yes, DELWAQ does work with z-layers. There is, however, something going on which I have not got to the bottom yet.
U
Zhanxian Wang, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model?

Arjen,

I know you have been working so hard to help me to resolve my issue, Thanks.

I just want to check if anyone has already worked with z-layer DELWAQ successfully and hopefully they can share their experience.

Jonathan
AM
Arjen Markus, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model?

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts
emoticon Understood.

Note: you can contact delft3d.support@deltares.nl for such official help requests. They will make sure that the question is handled by somebody here - and haunt them if they are not taking action ;)
U
Zhanxian Wang, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model? (Answer)

Issue is resolved by Arjen by updating ddcouple.

Thank you very much, Arjen!

Jonathan
AM
Arjen Markus, modified 3 Years ago.

RE: DELWAQ coupled with z-layer Delft3D FLOW model?

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts
Glad to hear that. The problem is that DELWAQ assumes a particular numbering structure in case of a t3D application and that was upset by a procedure to filter out those exchanges that would never contribute to the transport (exchanges involving inactive segments).