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 mpich2 .

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Delft 3D | Parallel.bat on a Workstation Windows 10 pro 64-bit Magaly Navía 0 752
errors at the end of compilation on windows Alejandro Paladio 1 1290
`MPIR_ThreadInfo' error sorted with MPICH 3.x instead of MPICH2 Giordano Lipari 4 4929
symbol lookup error,, MPI_Init Giordano Lipari 2 4010
Error Compiling Delft3D Linux "cannot have a deferred shape" Mariangel Garcia 0 2540
Problem running Delft3D-Flow in parallel mode Stephanie Zeunert 1 3793
Compiling on Debian Wheezy (7.3 Intel64) Fermin Avila 4 2529 undefined symbol: mpi_initialized_ sergio rosales 5 5967
Compiling build 2916 on Cray XE6 Steven Ayres 11 5477