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

Threads with tag matlab tools .

Thread Started By Replies Views Last Post  
The batch file generated by XBeach Matlab Toolbox is not running Jacqueline Rigatto 2 189
RGFGRID Crashes When Merging Irregular Grids - MATLAB Alternative? Robert Jenkins 0 561
Problems with Muppet using Matlab R2016a Gabriel Ruiz 0 2500
Landboundary file MATLAB Mathanki Sivapatham 1 3104
write .par file with MATLAB Francesco Enrile 7 5398
Initial conditions to nested grids Fernando Barreto 4 4758
reading water level from NEFIS file using vs_ matlab functions Kevin Hanegan 2 6806
Trouble Opening Delft3D-FLOW trih file in Matlab James Knighton 1 5821
From MIKE *.mesh to D-Flow FM * grid Freek Scheel 3 9027
Unstructured mesh tools and optimisation Ben Williams 10 15402