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! 

 

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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.

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** PLEASE TAG YOUR POST! **

 

 

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

 


Message Boards

Need help for applying D-Water Quality on 0D

FG
Fatemeh GholamiMahyari, modified 3 Years ago.

Need help for applying D-Water Quality on 0D

Youngling Posts: 23 Join Date: 4/8/16 Recent Posts
Hello Everyone

Thanks to your group I could successfully simulated my pond in D-WAQ. This is 3D model.I would like to do a 0D model and compare my result. But I could not find anything in any manual about that but the sentence 'D-Water Quality can be applied just as easily on 0D, 1DV, 1DH, 2DV, 2DH and 3D schematisations of a water body' in Delft3D Functional Specifications. the link below

https://oss.deltares.nl/documents/183920/185723/Delft3D-Functional_Specifications.pdf
Could you help me and introduce some reference that how can do 0D model?

Thanks
Fateme
AM
Arjen Markus, modified 3 Years ago.

RE: Need help for applying D-Water Quality on 0D

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts
Normally you import the flow field from a hydrodynamic model - ultimately that means that you have the volumes, flows, areas, dispersion lengths and the pointer table that describes the connectivity of the segments from such a model. (Using the graphical user-interface, you do that via the "hyd-file"). But that is only one way. You can provide these data in another form as well - independently from any hydrodynamic or hydrological model.

I have attached an example with four separate segments - as there is no exchange defined between these segments (the number of exchanges is zero), they are four independent 0D models. I use that to examine the details of the various processes (hence also the references to all kinds of include files). It also shows that you can define the geometry independently of any external model. You can even define a flow field if you want to - to have a river coming in/going out for instance. Details are provided in the documentation of the input file.

There are other possibiities too (define a very small hydrodynamic model for instance), but I find this to be the easiest way for this sort of modelling.
FG
Fatemeh GholamiMahyari, modified 3 Years ago.

RE: Need help for applying D-Water Quality on 0D

Youngling Posts: 23 Join Date: 4/8/16 Recent Posts
Dear Arjen

Thanks a lot for your respond, I will try the one with no need for Hydro.