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



  • LB
    Le Vu Bao replied 7 Months ago.

    error in opening delft3D in a new computer

    2 Posts 229 Views
  • RK
    rajan kumar replied 7 Months ago.

    missing wave.exe file

    10 Posts 11492 Views
  • GP
    Giovanni Panga, modified 7 Months ago.

    Tclkit is not responding

    1 Post 263 Views
  • MG
    Markus Gross replied 7 Months ago.

    Domain Decomposition, wrong coupling point

    5 Posts 3271 Views
  • LB
    Le Vu Bao replied 7 Months ago.

    PLCT crashes when I try to save the files

    9 Posts 1263 Views
  • PD
    Peng Dai replied 8 Months ago.

    Domain Decomposition

    5 Posts 8671 Views 1 Answer
  • Kapil Chandrakant Varne replied 8 Months ago.

    03_flow-wave example errors

    4 Posts 7481 Views
  • DD
    DERYA ITIR DILMEN, modified 8 Months ago.

    Installing Delft3D-GUI in x86

    1 Post 158 Views
  • AM
    Arunachalam M, modified 9 Months ago.

    Delft3D ArcGIS plugin not found in the installation directory.

    1 Post 172 Views
  • michael schaferkotter replied 9 Months ago.

    dflowfm with spiderweb winds error (SOLVED)

    3 Posts 1497 Views
  • FI
    Fides Izdori, modified 9 Months ago.

    vertical velocity profile in 3D simulation

    1 Post 573 Views
  • michael schaferkotter replied 9 Months ago.


    4 Posts 1981 Views
  • michael schaferkotter, modified 9 Months ago.

    mathematica development?

    1 Post 856 Views
  • MD
    Mohammad Daliri, modified 9 Months ago.

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

    1 Post 873 Views
  • ML
    Michelle Loozen replied 10 Months ago.

    Create DELFT3D communication file

    3 Posts 3457 Views
  • DK
    Daijiro Kobashi, modified 10 Months ago.

    Change the origin of the grids on RGFGRID

    1 Post 1149 Views
  • michael schaferkotter replied 10 Months ago.

    dflowfm output map file netcdf: combine?

    2 Posts 1395 Views
  • Richard Measures replied 10 Months ago.

    Is there a problem with the SVN server?

    4 Posts 2194 Views
  • michael schaferkotter replied 10 Months ago.

    dflowfm build error

    2 Posts 1412 Views
  • EL
    Esteban Lacunza replied 10 Months ago.

    vs_l.c not found

    2 Posts 1409 Views
Showing 101 to 120 of 1,119 entries.