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  
D_FLOW netcdf output not readable in Python Anne Ton 2 274
Extracting wave results in netcdf format Pedro Otiñar Morillas 0 50
converting .nc format to .wnd umutcan inal 0 143
Converting .nc file to .wnd file Dogukan Karakas 0 164
Getting netCDF as an output of Delft3D-FLOW Changeun Yang 1 221
reading output files without matlab veli yumruktepe 6 15047
Long computation times while writting to netCDF. João Lencart e Silva 4 2016
The never ending story with NETCDF - A guide for linux compilation Giovanni Besio 1 2228
Delft 2 NetCDF Hemerson Tonin 7 15462
Error in opening the compiled module file error on Linux machine Josha Humberston 1 2449
open boundaries Tony Lee 0 892
io_netcdf_api.F90 compilation error in Ubuntu 16.10 Sebastian Krieger 4 4537
Does not compile with either GNU 4.8.3 or Intel 12.1 Jeff Stafford 5 5283
Open a netcdf-4 with Python Antoine Marié 1 2597
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 9037
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 9037
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 9037
Error with datagroups.f90 and netcdf.mod Iñaki Silanes 2 3108
Compiling Delft3d in OpenSuse 13.1 Giovanni Besio 10 9037
Cannot compile tagged versions from 4709 on Windows 64 bits Dmitry Kushnir 17 15114