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



  • SD
    Sonny de Wit replied 1 Year ago.

    Delft3D 4.00 license error

    2 Posts 478 Views 0 Answers
  • Adri Mourits replied 1 Year ago.

    Run the tcl script create_config_xml

    2 Posts 1149 Views 1 Answer
  • KM
    Konstantinos Matsoukis replied 1 Year ago.

    Thatcher - Harleman time lag

    5 Posts 1449 Views
  • Qinghua Ye replied 1 Year ago.

    error with Delft3D GUI Delft3D 4.03.00 Windows

    2 Posts 879 Views
  • Mitya Menshikov replied 1 Year ago.

    Source code of calculate temperature

    5 Posts 890 Views
  • Erin King, modified 1 Year ago.

    VERY slow computation!

    1 Post 470 Views
  • Adri Mourits replied 1 Year ago.

    missing d_hydro.exe

    2 Posts 590 Views 1 Answer
  • Adri Mourits replied 1 Year ago.

    The never ending story with NETCDF - A guide for linux compilation

    2 Posts 1229 Views
  • Bert Jagers replied 1 Year ago.

    Coordinate problem plotting WAQ results

    2 Posts 648 Views
  • Emiel Moerman replied 1 Year ago.

    How to calibrate astronomic tide forcing components?

    2 Posts 895 Views
  • Christopher Mahlathi replied 1 Year ago.

    Delft3D FM- Waves errors

    3 Posts 758 Views 1 Answer
  • Eduardo H. Cordeiro Gonçalves replied 1 Year ago.

    Error when running a simple hydrodynamic case

    2 Posts 489 Views 0 Answers
  • AD
    A D replied 1 Year ago.

    Very low values for depth averaged velocity

    7 Posts 1017 Views
  • Adri Mourits replied 1 Year ago.

    32 bit or 64?

    2 Posts 633 Views 0 Answers
  • EE
    Esther Espinoza replied 1 Year ago.

    How to decide the Reflection parameter alpha value? (flow)

    3 Posts 1871 Views
  • AG
    alessandro gerevini replied 1 Year ago.

    Problem in starting simulation

    3 Posts 676 Views 1 Answer
  • Adri Mourits replied 1 Year ago.

    Problem in execute Delft3D Flow simulation

    2 Posts 370 Views
  • AS
    Aleksandr Semchukov replied 1 Year ago.

    Space varying meteorological input

    5 Posts 945 Views 2 Answers
  • Adri Mourits replied 1 Year ago.

    error wave on delft3d open source 4.01.00.hm

    2 Posts 448 Views
  • Adri Mourits replied 1 Year ago.

    I had successful compiled the source code, but I can't run the calculation.

    2 Posts 563 Views 1 Answer
Showing 141 to 160 of 1,119 entries.