intro story D-Flow FM


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


Message Boards

Threads with tag gui .

Thread Started By Replies Views Last Post  
How to prepare inputs Grid, bathymetry, mesh on linux after install Delft3d sivaiah Borra 0 23
Trouble installing Delft3D Graphical User Interface (GUI) Gabriel Lim 4 4093
RESTART WITH MAPFILE John Anderson 6 4431
Extension of GUI License Guanghai Gao 18 12132
Linux GUI install Drew Ackerman 12 11018
Linux GUI install Drew Ackerman 12 11018
GUI installation not working Thomas SAILLOUR 1 2268
Compiling issues again Ed Atkin 5 2891
New GUI binaries or Open source version? Bogdan Hlevca 1 4826
Multiple Simulations Oliver Lojek 5 5233
Error reading grid file on Linux francisco tiano 20 10538
grid clicking-failed Ao Chu 5 5450
Morphological Model Setup | Tidal Flats Oliver Lojek 11 9210
Error reading grid file on Linux francisco tiano 20 10538
Error reading grid file on Linux francisco tiano 20 10538
FLOW : Error loading shared libraries: Oliver Lojek 5 13506
Install GUI Oliver Lojek 6 3494
Install GUI Oliver Lojek 6 3494
Running D3D version 5 and version 6 on same machine Ben Williams 2 2378
Showing 1 to 20 of 23 entries.