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 netcdf .

Thread Started By Replies Views Last Post  
converting .nc format to .wnd umutcan inal 0 41
Converting .nc file to .wnd file Dogukan Karakas 0 39
Getting netCDF as an output of Delft3D-FLOW Changeun Yang 1 90
reading output files without matlab veli yumruktepe 6 13556
Long computation times while writting to netCDF. João Lencart e Silva 4 1375
The never ending story with NETCDF - A guide for linux compilation Giovanni Besio 1 1790
Delft 2 NetCDF Hemerson Tonin 6 14021
Error in opening the compiled module file error on Linux machine Josha Humberston 1 2012
open boundaries Tony Lee 0 679
io_netcdf_api.F90 compilation error in Ubuntu 16.10 Sebastian Krieger 4 3893
Does not compile with either GNU 4.8.3 or Intel 12.1 Jeff Stafford 5 4483
Open a netcdf-4 with Python Antoine Marié 1 2079
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 7665
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 7665
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 7665
Error with datagroups.f90 and netcdf.mod Iñaki Silanes 2 2788
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 7665
Cannot compile tagged versions from 4709 on Windows 64 bits Dmitry Kushnir 17 13424
compiling problems using Windows 7 and Intel Composer XE 2013 Johanna Sucher 7 8229
DELWAQ Conversion NEFIS to NetCDF Stephanie Zeunert 14 10991
Showing 1 to 20 of 32 entries.