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: 

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





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


Message Boards

grid input file

Soroush Safaei, modified 7 Years ago.

grid input file

Youngling Posts: 21 Join Date: 3/24/13 Recent Posts
hello everyone...
can I use a GIS map in delft3D?i want to open the map and put my grids on it...
sorry for such a weird question. I am a beginner with delft...
Dmitry Kushnir, modified 7 Years ago.

RE: grid input file (Answer)

Jedi Knight Posts: 107 Join Date: 11/9/12 Recent Posts
Hi Soroush,

If your GIS map is in the shape-file format you can easily open it in QUICKPLOT and then put your grids on it. You can also refer to Appendix A of the Delft3D-QUICKPLOT User Manual to check QUICKPLOT supported file formats.

Moreover, you can open your grids in QUICKPLOT, export them to a shp-file and then open them in a GIS-environment.

Kind regards,

Soroush Safaei, modified 7 Years ago.

RE: grid input file

Youngling Posts: 21 Join Date: 3/24/13 Recent Posts
hi Dmitry...
that is really helpful.thank you for your answer. if I succeed to open quickplot I can use your suggestion.
thanks again for your time dmitry