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



  • IX
    Ismael Xique, modified 3 Years ago.

    Online Wave Computation Stalling Without Error Messages

    1 Post 1454 Views
  • Qinghua Ye replied 3 Years ago.

    merge grids

    2 Posts 3060 Views 1 Answer
  • MG
    Marcelo Gagliardi replied 3 Years ago.

    ERROR Only ITDATE as reference date is accepted

    2 Posts 4420 Views
  • Adri Mourits replied 3 Years ago.

    compiling delft3d error, /usr/bin/ld: cannot find -lnetcdff

    7 Posts 5190 Views 1 Answer
  • IX
    Ismael Xique, modified 3 Years ago.

    batch run error

    1 Post 1537 Views
  • TT
    Tomas Trewhela replied 3 Years ago.

    compiling delft3d troubles -

    2 Posts 2239 Views
  • Adri Mourits replied 3 Years ago.

    Where I can find the <Install-Shield.exe>?

    4 Posts 4265 Views
  • PG
    Paolo Gyssels replied 3 Years ago.

    Coupling WAVE and FLOW: extend or do not extend?

    2 Posts 2030 Views 0 Answers
  • Rudy Schueder replied 3 Years ago.

    Numerical instability caused by Q-H boundary?

    2 Posts 2919 Views 0 Answers
  • Adri Mourits replied 3 Years ago.

    Problems running 5169 examples

    2 Posts 2065 Views
  • Qinghua Ye replied 3 Years ago.

    Delft3D-FLOW Parallel Computation Error

    2 Posts 2772 Views 0 Answers
  • SW
    Simon Waldman, modified 3 Years ago.

    Confusion over bed roughness formulations in 3D

    1 Post 1202 Views 0 Answers
  • Erik de Goede replied 3 Years ago.

    Error with Time series in Domain Decomposition models

    3 Posts 1963 Views
  • Adri Mourits replied 2 Years ago.

    Error while running wave using equidistant_wind with nesting

    3 Posts 2825 Views 1 Answer
  • Qinghua Ye replied 3 Years ago.


    3 Posts 2599 Views 0 Answers
  • MH
    Mark Huisjes replied 3 Years ago.

    Grid generation in many subbasin scenario

    3 Posts 1905 Views 0 Answers
  • RP
    Renan Pointeau replied 3 Years ago.

    Can Delft-FLOW have muti-processing?

    3 Posts 1971 Views
  • Qinghua Ye replied 3 Years ago.

    Bottom roughness(manning) and viscosity/diffusity

    2 Posts 2816 Views 1 Answer
  • Adri Mourits replied 3 Years ago.

    best subversion tag

    4 Posts 3711 Views 2 Answers
  • Qinghua Ye replied 3 Years ago.

    flow simulations with "Closure error"

    2 Posts 1249 Views 1 Answer
Showing 321 to 340 of 1,106 entries.