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



Pre & Post processing


  • Delft Dashboard

    0 Subcategories 10 Threads
  • GPP

    0 Subcategories 1 Thread
  • Muppet

    0 Subcategories 1 Thread
  • Quickplot

    0 Subcategories 55 Threads
  • RGF-grid

    0 Subcategories 40 Threads
  • TIDE

    0 Subcategories 1 Thread

    0 Subcategories 1 Thread
  • WK
    wang kemeng replied 1 Month ago.

    GUU, GUV and GVV ERROR at boundary

    7 Posts 12602 Views 2 Answers
  • Erik de Goede replied 2 Months ago.

    Importing irregular grid to QUICKIN

    2 Posts 1572 Views
  • MS
    Mathanki Sivapatham, modified 2 Years ago.

    Landboundary file MATLAB

    1 Post 1948 Views 0 Answers
  • GA
    Gazi Md. Amin, modified 2 Years ago.

    Regarding Open Earth Tools!!

    1 Post 2021 Views 0 Answers
  • BZ
    Bing Zhao, modified 2 Years ago.

    Wrong with Nesting

    1 Post 1992 Views
  • CL
    chen liang, modified 2 Years ago.

    GPP data export

    1 Post 2167 Views 0 Answers
  • RD
    Robert de Boer, modified 3 Years ago.

    DelftDashBoard not starting

    1 Post 2603 Views
  • JM
    John McDowell replied 1 Month ago.

    delftdashboard not starting

    6 Posts 6070 Views 0 Answers
  • ST
    Sarah Margaret Trimble replied 3 Months ago.

    reading output files without matlab

    7 Posts 11318 Views
  • Amaal Osama Fathy, modified 4 Months ago.

    Z-grid on WAQ module?

    1 Post 237 Views
  • DD
    DERYA ITIR DILMEN replied 4 Months ago.

    reading water level from NEFIS file using vs_ matlab functions

    2 Posts 5297 Views 0 Answers
  • Phil Shepperd replied 1 Year ago.

    Extract flow paths (streamlines?) using MATLAB or QUICKPLOT

    2 Posts 1526 Views 0 Answers
  • TL
    Tony Lee replied 1 Year ago.

    Some questions about Dashboard

    3 Posts 2950 Views
Showing 1 to 20 of 94 entries.