intro story Lake

Lake

Lakes and reservoirs are important resources for communities around the globe. They provide food, drinking and irrigation water and can also offer spots for recreation. Under certain conditions lakes can also represent a threat for local communities, such as flooding or limnic eruptions. The ecological state of shallow lakes may be hampered by suspended sediments due to wind driven currents and waves. In deep lakes, stratification can cause undesirable anoxic conditions in the deeper areas. Understanding these systems is crucial to enable a sound management of these water bodies.

 
Delft3D is the state-of-the-art modelling framework for hydrodynamics, water quality, ecology, waves and morphology.
 
Here, in this space, we share knowledge & experiences, and discuss issues related to modelling of lakes.

 

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


 

Message Boards

Z-model and Water Quality

JM
Jose Monteoliva, modified 7 Years ago.

Z-model and Water Quality

Youngling Posts: 2 Join Date: 5/17/13 Recent Posts
Dear all,

I am going to try to simulate water quality and ecological dynamics in a reservoir. It shows thermal stratification, so I guess I would use the Z-model instead of sigma, but the FLOW manual states that coupled FLOW-WAQ simulations are not allowed when using Z-model. What is your suggestion for this case?

Thank you very much in advance,
AA
Anonymous Anonymous, modified 7 Years ago.

RE: Z-model and Water Quality

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

It is possible to use Delwaq with a z-layer FLOW model.
To do so you have to use the online coupling procedure described in section 11.1 of the D-Water Quality user manual. The online coupling (or built-in coupling) will generate the WAQ files directly while FLOW is running. Once FLOW is done you should be able to read the resulting *.hyd file from the WAQ GUI.

Good luck!
JM
Jose Monteoliva, modified 7 Years ago.

RE: Z-model and Water Quality

Youngling Posts: 2 Join Date: 5/17/13 Recent Posts
Thank you very much, Christophe.

Regards,
U
Marcin Kawka, modified 7 Years ago.

RE: Z-model and Water Quality

Christophe Thiange:

To do so you have to use the online coupling procedure described in section 11.1 of the D-Water Quality user manual. The online coupling (or built-in coupling) will generate the WAQ files directly while FLOW is running. Once FLOW is done you should be able to read the resulting *.hyd file from the WAQ GUI.


Just to make sure: there is no option to run online flow and waq with shell scripts only? I would like to aviod using d3d-menu under linux, because I'am getting Segmentation faults from it.
AA
Anonymous Anonymous, modified 7 Years ago.

RE: Z-model and Water Quality

Jedi Master Posts: 333 Join Date: 7/30/20 Recent Posts
You can always bypass the GUI and edit your mdf file directly.
Section B.18 of the FLOW manual explains which keywords to use for the built-in FLOW-WAQ coupling.

Regards,
Chris