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



  • Adri Mourits replied 3 Years ago.

    Error Documentation/List

    2 Posts 2194 Views
  • Rudy Schueder replied 3 Years ago.

    Order of boundary specification

    5 Posts 2392 Views 1 Answer
  • JM
    Jos Muller replied 1 Year ago.

    online delft3d flow and swan coupling

    8 Posts 4305 Views 2 Answers
  • KL
    K Liu replied 1 Year ago.

    Qs: spatially varying critical shear stress using *tce

    4 Posts 2899 Views 0 Answers
  • AK
    Ali Khoshkholgh replied 3 Years ago.

    The effect of roller model

    3 Posts 2021 Views 0 Answers
  • Adri Mourits replied 3 Years ago.

    Hi. have a question for VS(Viewer Selector) post-process program..

    2 Posts 1669 Views
  • Qinghua Ye replied 2 Years ago.

    (Windows) d3d_menu.exe does not work

    2 Posts 2655 Views 0 Answers
  • Adri Mourits replied 3 Years ago.

    Problem to start a simulation with domain decomposition

    2 Posts 2855 Views 1 Answer
  • Adri Mourits replied 3 Years ago.

    d_hydro.exe abort after almost complet sediment simulation

    11 Posts 4508 Views 4 Answers
  • Adri Mourits replied 3 Years ago.

    installation of d3d (tags-4739)

    4 Posts 2543 Views 2 Answers
  • Qinghua Ye replied 4 Years ago.

    QH Boundary Condition

    2 Posts 2704 Views 1 Answer
  • Michelle Jeuken replied 3 Years ago.

    D-Part module status

    6 Posts 3750 Views 1 Answer
  • karunakar kintada replied 3 Years ago.

    Roller model

    3 Posts 2366 Views 1 Answer
  • HT
    HO THINH replied 3 Years ago.

    Boundary conditions - currents

    6 Posts 4485 Views
  • Emiel Moerman replied 4 Years ago.

    Domain decomposition and dry cells

    2 Posts 1934 Views 1 Answer
  • Adri Mourits replied 2 Years ago.

    d_hydro ABORT: Cannot load component library "flow2d3d.dll". Return code: 1

    5 Posts 4178 Views 2 Answers
  • Adri Mourits replied 4 Years ago.

    make can't find netcdff lib

    2 Posts 2771 Views 1 Answer
  • Mao lei, modified 4 Years ago.

    moving pressure field in Delft3d-Flow

    1 Post 1803 Views
  • Adri Mourits replied 4 Years ago.

    Two simulations with one delft version

    2 Posts 1235 Views 0 Answers
  • FM
    florian MONETTI replied 4 Years ago.

    Discontinuities in the erosion/sedimentation pattern

    7 Posts 2620 Views 0 Answers
Showing 361 to 380 of 1,119 entries.