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


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Threads with tag compilation problem on win7 .

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Error LNK2001 when compiling tag version 7545 Mohammed Almoghayer 4 3467
errors at the end of compilation on windows Alejandro Paladio 1 1488
Tag 6906 no flow2d3d.dll generated in "flow2d3d/bin" Liang L 3 2971
compilation and linking problems.... George Mitchell 1 2360
Problem with and VS2015 Devis Canesso 1 1609
Errors compiling tag 5656 Susana Baston 2 3301
Problems compiling with Visual Studio 2015 and Fortran Compiler 2016? Susan Wherry 12 15848
Cannot compile on windows 7, visual studio 2010 Intel parallel studio 2015 Sarah Spinney 1 4013
compilation errors - windows *new attachment Nathan Cheshier 2 3698
Errors Compiling Delft3D on Win8.1 (64-bit) xuelian jiang 1 3060
Delft3d (tag v. 4440) compiling error Jeff Phillips 1 4365
Compilation Error(LNK1181 & ERROR while copying) Akash Melethil 1 2784
Compilation Failure VS 2010, Intel Fortran 2013 (Multiple Failures) Shaffiq Somani 3 7088
Error Compiling Error LNK1123 Steven Micko 4 6161
Error Compiling (datsel) - Delwaq Iury Simões 16 9934
Compilation Problem Sumit Sinha 5 5945