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 compilation on win10 .

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Compiling Delft3D-4 on Windows 10 - 64 bit with VS2019 and IFORT 2019 Anonymous 1 41
byacc.exe error - Windows 10 - Delft7545 Jamie Stackpole 1 180
Trouble with the installation Leo Fransbach 0 137
Compilation Error in Win10 with VS2017 and IVF2019 Baogan Liao 3 2537
Compilation - VS won't copy wave.exe Lucas De Oliveira Toledo Morais 0 420
Compilation - Win10 - Never Ends Lucas De Oliveira Toledo Morais 1 1070
Compilation Error: Skipped Build:Project: flow2d3d_openda Samuel Schroers 4 3064
URGENT: Compilation error on Windows 10 - VS15 community + IFORT18 Gabriel Lim 7 5547
Compiling on windows 10 virtual machine: error during example Germán Barrera 2 3095
Fatal error LNK1181 while compiling Juilo Leva Lopez 3 5022
Errors while compiling José Morales 1 1846
Showing 1 to 11 of 11 entries.