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



  • Magaly Navía replied 2 Months ago.

    Delft 3D | Parallel.bat on a Quad-Core Windows 7 64-bit

    12 Posts 6332 Views 1 Answer
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    Alina Nicolae replied 2 Months ago.

    Delft3D MOR module

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    Sha LOU replied 3 Months ago.

    Curvilinear Grid - Define spectral files

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  • Fernando Barreto, modified 3 Months ago.

    All boundaries with current type boundary condition

    1 Post 128 Views 0 Answers
  • SN
    Shereen Nazer, modified 3 Months ago.

    sample plotting in QUICKIN

    1 Post 120 Views
  • Oliver Lojek replied 3 Months ago.

    "Error in mclFreeStackTrace" Quickplot

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    joe rahi, modified 3 Months ago.

    Delwaq input file

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    Braulio Juarez, modified 3 Months ago.

    Delft3D running without parallel option but not running in parallel

    1 Post 98 Views
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    Alexandra Grace McInturf, modified 3 Months ago.

    Installation of the Delft3D GUI

    1 Post 132 Views
  • AM
    Alex Mcinturf, modified 3 Months ago.

    GUI installation issue

    1 Post 121 Views 0 Answers
  • YL
    Yuanyi Li, modified 4 Months ago.

    Want a example of file for temporal and varying wind field for Flow

    1 Post 141 Views
  • LC
    Liang Chen, modified 4 Months ago.

    Promgraming error

    1 Post 114 Views
  • SS
    Samuel Schroers replied 4 Months ago.

    Neumann Boundary Condition

    3 Posts 1241 Views 0 Answers
  • CF
    Chris Flanary, modified 4 Months ago.

    Sediment variables in NetCDF history file all 0

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  • XW
    Xiaohui Wang replied 4 Months ago.

    PetscInitialize() must be called before PetscFinalize() (SOLVED)

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  • Qinghua Ye replied 4 Months ago.

    without delft3d.sh in Ubuntu

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    Suraj Singh replied 4 Months ago.

    Boundary conditions

    9 Posts 5568 Views
  • Germán Aragón, modified 4 Months ago.


    1 Post 150 Views
  • Samuel Valentim replied 5 Months ago.


    11 Posts 4154 Views 1 Answer
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    Irene Machado, modified 5 Months ago.

    getting .xyz file

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