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



  • AD
    A D replied 1 Year ago.

    Convert matlab file to a depth file

    3 Posts 900 Views 1 Answer
  • AR
    Antonio Ruiz, modified 1 Year ago.

    Waves forces and spurious alongshore current

    1 Post 433 Views 0 Answers
  • Francesco Enrile, modified 3 Years ago.

    Horizontal eddy viscosity

    1 Post 1956 Views 0 Answers
  • MH
    Mathilde Henri, modified 3 Years ago.

    problem with river sediment simulation

    1 Post 1809 Views
  • CL
    Cathy liu replied 2 Years ago.

    faster way for triangular interpolation

    6 Posts 4338 Views 0 Answers
  • MG
    Mariangel Garcia, modified 4 Years ago.

    Error Compiling Delft3D Linux "cannot have a deferred shape"

    1 Post 2230 Views 0 Answers
  • Giordano Lipari replied 4 Years ago.

    Delft-3D Flow, Linux, Ubuntu | how to completely UNinstall

    2 Posts 4305 Views 1 Answer
  • Shawn Harrison replied 6 Years ago.

    Flow only Bug? "glibc detected"..

    6 Posts 9444 Views 1 Answer
  • Brendan Dooher replied 4 Years ago.

    Space-varying bottom friction (not yet implemented for Delft3D-WAVE)

    2 Posts 2700 Views 0 Answers
  • LP
    Lucas Pion, modified 5 Days ago.

    Difficulties with .bcm file

    1 Post 19 Views 0 Answers
  • SL
    Sung Tae LEE replied 8 Days ago.

    Problems with creation of .cco and .lga files

    2 Posts 98 Views 0 Answers
  • FI
    Fides Izdori, modified 9 Days ago.

    Urgent: Regarding Extension of GUI Licence

    1 Post 30 Views
  • FI
    Fides Izdori replied 9 Days ago.

    Extension of GUI License

    19 Posts 8709 Views
  • CP
    Camilo E Pinilla, modified 13 Days ago.


    1 Post 274 Views
  • LT
    Lisang THOURN, modified 14 Days ago.

    Genrate boundary condition for crater lake

    1 Post 253 Views
  • CF
    Chris Flanary, modified 21 Days ago.

    Timepoints required for online FLOW-WAVE Simulation

    1 Post 83 Views 0 Answers
  • AS
    Aleksandr Semchukov, modified 23 Days ago.

    Volumes and area in spherical coordinates

    1 Post 75 Views
  • Richard Measures replied 23 Days ago.

    Z-model & Sigma-model

    2 Posts 136 Views
  • Ahmed Elkut replied 29 Days ago.

    Sediment Simulation - TriDiag File

    7 Posts 2204 Views 0 Answers
  • GL
    Gabriel Lim replied 1 Month ago.

    Executable file not found (d_hydro.exe)

    5 Posts 1816 Views
Showing 41 to 60 of 1,119 entries.