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



  • Qinghua Ye replied 1 Year ago.

    Compiling 20130808_tidal_turbines with gfortran

    2 Posts 1540 Views 1 Answer
  • XL
    Xiujuan Liu replied 3 Years ago.

    a problem about time and space varying wave boundary conditions

    5 Posts 2242 Views 1 Answer
  • Adri Mourits replied 3 Years ago.

    Wave input, visualization area, input file missing

    2 Posts 1542 Views 0 Answers
  • Ben Williams, modified 3 Years ago.

    News of Delft3D Flexible Mesh?

    1 Post 1182 Views 0 Answers
  • Qinghua Ye replied 1 Year ago.

    Delft3D Wave

    2 Posts 1661 Views 1 Answer
  • MW
    Mingzheng Wen, modified 3 Years ago.

    Errors at Flow Simulation

    1 Post 1195 Views 0 Answers
  • JT
    Jack Teo replied 3 Years ago.

    Boundary not working for Delft3D-FLOW

    2 Posts 1705 Views 1 Answer
  • Adri Mourits replied 3 Years ago.

    Obstacle in GUI

    4 Posts 2287 Views 1 Answer
  • Adri Mourits replied 3 Years ago.

    Linux flow-wave coupling run terminated with segmentation fault

    12 Posts 6321 Views
  • LH
    Lumas Helaire, modified 3 Years ago.

    Delft3D Flow - error running mdf

    1 Post 1328 Views
  • Adri Mourits replied 3 Years ago.

    Recompile SWAN

    5 Posts 2083 Views 2 Answers
  • Michelle Jeuken replied 3 Years ago.

    PART menu not visible in GUI 4.01.01.rc.03??

    2 Posts 1981 Views 0 Answers
  • Adri Mourits replied 3 Years ago.

    Version numbering

    2 Posts 1668 Views 1 Answer
  • HL
    Hardy Lee, modified 3 Years ago.

    what does the name of RGFGRID mean?

    1 Post 1289 Views
  • HL
    Hardy Lee replied 3 Years ago.

    How to paste two grids at two diferent places

    3 Posts 2853 Views 0 Answers
  • Jonathan King replied 3 Years ago.

    Latitude of project site - GUI

    3 Posts 2113 Views 1 Answer
  • Michelle Jeuken replied 3 Years ago.

    write .par file with MATLAB

    8 Posts 3459 Views 1 Answer
  • AS
    Aleksandr Semchukov replied 3 Years ago.

    3D gate

    3 Posts 2355 Views 1 Answer
  • VB
    Vanessa Bennett replied 3 Years ago.

    DELFT3D WAVE: Problem with Spatially-Varying and Time Varying Boundary Cond

    5 Posts 4256 Views 0 Answers
  • Adri Mourits replied 3 Years ago.

    appending the results to com file

    4 Posts 2108 Views 0 Answers
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