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


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Threads with tag trachytopes .

Thread Started By Replies Views Last Post  
DFM Trachytopes Rae Monica Taylor-Burns 0 167
Trachytopes and time varied roughness Philipe Ratton 4 1281
trachytopes definition Melissa Latella 0 678
Creation of .aru .arv file and conversion to .arl Melissa Latella 1 708
Creation of Area Definition File for implementing trachytopes Melissa Latella 4 1455
Baptist for trachytopes does not work with Manning Muriel Brückner 1 1422
Spatially Varying Reactions Deon Knights 1 2498
Domain Decomposition ERROR Trachytopes Jos Muller 0 1159
Parameters for Trachytope Jessica Chassereau 2 3806
Trachytopes Steven Ayres 2 4233