intro story D-Flow FM

 

D-Flow Flexible Mesh

D-Flow Flexible Mesh (D-Flow FM) is the new software engine for hydrodynamical simulations on unstructured grids in 1D-2D-3D. Together with the familiar curvilinear meshes from Delft3D 4, the unstructured grid can consist of triangles, pentagons (etc.) and 1D channel networks, all in one single mesh. It combines proven technology from the hydrodynamic engines of Delft3D 4 and SOBEK 2 and adds flexible administration, resulting in:

  • Easier 1D-2D-3D model coupling, intuitive setup of boundary conditions and meteorological forcings (amongst others).
  • More flexible 2D gridding in delta regions, river junctions, harbours, intertidal flats and more.
  • High performance by smart use of multicore architectures, and grid computing clusters.
An overview of the current developments can be found here.
 
The D-Flow FM - team would be delighted if you would participate in discussions on the generation of meshes, the specification of boundary conditions, the running of computations, and all kinds of other relevant topics. Feel free to share your smart questions and/or brilliant solutions! 

 

=======================================================
We have launched a new website (still under construction so expect continuous improvements) and a new forum dedicated to Delft3D Flexible Mesh.

Please follow this link to the new forum: 
/web/delft3dfm/forum

Post your questions, issues, suggestions, difficulties related to our Delft3D Flexible Mesh Suite on the new forum.

=======================================================

** PLEASE TAG YOUR POST! **

 

 

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

 


Message Boards

WAQ - instantaneous release?

JC
Jessica Chassereau, modified 8 Years ago.

WAQ - instantaneous release?

Youngling Posts: 15 Join Date: 4/21/11 Recent Posts
Hello,

I am modeling the release of a conservative tracer into a marsh system. I have had success in using the PART module to calculate concentrations over a few tidal cycles and would also like to use the WAQ module to do the same thing.

Using the WAQ module, I input the tracer release as a discharge location at a point away from the open flow boundary. Rather than an instantaneous release, the tracer appears to be continuously released in pulses over the entire simulation. Is it possible to simulate an instantaneous release using the WAQ module? If so, how can this be done?

Thanks,

Jessica
JC
Jessica Chassereau, modified 8 Years ago.

RE: WAQ - instantaneous release?

Youngling Posts: 15 Join Date: 4/21/11 Recent Posts
Also, the tracer seems to pile up at the open boundary (specified by FLOW). Is there a way to adjust the boundary such that the dye is carried over the boundary during ebb tide it "disappears" rather than re-entering the domain during the subsequent flood tide? Keeping the flood tide always free of tracer?

Thanks!
Jessica