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

Variable solar radiation in a fecal coliform process

Javier García Alba, modified 6 Years ago.

Variable solar radiation in a fecal coliform process

Youngling Posts: 12 Join Date: 1/4/12 Recent Posts
Hi,
I'm trying to make a process with Escherichia Coli and a variable solar radiation during the day. How can I declare the variable RadSurf? I use the calcrad_uv but I don't know how to specify in the gui the variable solar radiation. The gui ask for a value.

Thanks in advance,
AA
Anonymous Anonymous, modified 6 Years ago.

RE: Variable solar radiation in a fecal coliform process

Jedi Master Posts: 333 Join Date: 7/30/20 Recent Posts
When typing the value for RadSurf you should see a button at the bottom of the GUI: Edit data
Click it then select Properties > Data Properties. The pop-up allows you to choose time-varying input. Properties > Details enables you to go for spatially varying input.

Alternatively you can also specify the values directly in the input file (see the input file description manual chapter 7). When dealing with a lot of input data this is often easier. You can format your data in separate files and refer to them in the main input file using INCLUDE statements.

Good luck!
Javier García Alba, modified 6 Years ago.

RE: Variable solar radiation in a fecal coliform process

Youngling Posts: 12 Join Date: 1/4/12 Recent Posts
Thanks for your comments, but the problem is I want to use the solar model of DELWAQ directly. I included the dayrad process but radsurf didn't change in the output. How do I have to include the solar model correctly?
Thank you in advance
AA
Anonymous Anonymous, modified 6 Years ago.

RE: Variable solar radiation in a fecal coliform process

Jedi Master Posts: 333 Join Date: 7/30/20 Recent Posts
Hi Javier,

Sorry I misunderstood your question. So you want radiation at the surface to be computed based on latitude, cloudiness etc... right?
This is not implemented in the processes library yet, but it is in Delft3D-Flow (all documented in the Flow manual), hence adding a similar process to DELWAQ should be straight forward.
You could give it a try and we'll be happy to assist you.

Regards,
Christophe
AA
Amyrhul Abu Bakar, modified 2 Years ago.

RE: Variable solar radiation in a fecal coliform process

Youngling Posts: 1 Join Date: 10/3/18 Recent Posts

Hi Christophe,

 

Referring to the previous discussion made by Javier about the solar model application based on the D-Water Quality module, I am keen to know if this process has been implemented in the Processes Library Configuration Tool (PLCT) of Version 5.04.01.29071.

 

If the process was not implemented in that version, may I know which PLCT's version this process has been fully implemented?

 

Regards,

Amyrhul