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



  • Kapil Chandrakant Varne replied 4 Months ago.

    03_flow-wave example errors

    4 Posts 7253 Views
  • DD
    DERYA ITIR DILMEN, modified 4 Months ago.

    Installing Delft3D-GUI in x86

    1 Post 91 Views
  • AM
    Arunachalam M, modified 4 Months ago.

    Delft3D ArcGIS plugin not found in the installation directory.

    1 Post 107 Views
  • michael schaferkotter replied 5 Months ago.

    dflowfm with spiderweb winds error (SOLVED)

    3 Posts 911 Views
  • FI
    Fides Izdori, modified 5 Months ago.

    vertical velocity profile in 3D simulation

    1 Post 303 Views
  • michael schaferkotter replied 5 Months ago.


    4 Posts 1250 Views
  • michael schaferkotter, modified 5 Months ago.

    mathematica development?

    1 Post 468 Views
  • MD
    Mohammad Daliri, modified 5 Months ago.

    Errors. child killed: unknown signal & couldn't open delft3d.log

    1 Post 488 Views
  • ML
    Michelle Loozen replied 5 Months ago.

    Create DELFT3D communication file

    3 Posts 2716 Views
  • DK
    Daijiro Kobashi, modified 5 Months ago.

    Change the origin of the grids on RGFGRID

    1 Post 665 Views
  • michael schaferkotter replied 5 Months ago.

    dflowfm output map file netcdf: combine?

    2 Posts 862 Views
  • Richard Measures replied 6 Months ago.

    Is there a problem with the SVN server?

    4 Posts 1393 Views
  • michael schaferkotter replied 6 Months ago.

    dflowfm build error

    2 Posts 856 Views
  • EL
    Esteban Lacunza replied 6 Months ago.

    vs_l.c not found

    2 Posts 857 Views
  • JA
    John Anderson replied 6 Months ago.


    7 Posts 1867 Views
  • JO
    Jennifer Ogrodnick, modified 6 Months ago.


    1 Post 514 Views
  • JB
    Jose Beya, modified 6 Months ago.

    Autoreconfig failed Centos7 release

    1 Post 481 Views
  • SW
    Sun Wanguang, modified 6 Months ago.

    Who can give me a trial of license?

    1 Post 388 Views
  • BO
    Bernardo Oliveira, modified 6 Months ago.

    DELFT 3D GUI under OSX

    1 Post 552 Views
  • JB
    Jose Beya replied 6 Months ago.

    GUI pre-/post-processing programs for Delft3D on Linux

    15 Posts 15316 Views 1 Answer
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