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


jorge serrano, modified 3 Years ago.


Youngling Posts: 4 Join Date: 7/8/16 Recent Posts
Hello, the compilation of delft3d for debian I am performing exactly as mentioned for linux, the problem I was presented was the compilation of NETCDF, I had been provided the download page, downloaded and decompressed but running ./configure This was what came out:

checking for NETCDF_FORTRAN... no
checking for NETCDF... no
configure: error: Package requirements (netcdf >= 4) were not met:

Package netcdf was not found in the pkg-config search path.
Perhaps you should add the directory containing `netcdf.pc'
to the PKG_CONFIG_PATH environment variable
Package 'netcdf', required by 'world', not found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables NETCDF_CFLAGS
and NETCDF_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

I do not understand what I should do now, could you please help me ??
Adri Mourits, modified 3 Years ago.


Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Jorge,

Qinghua managed to get everything compiled on a clean Ubuntu, recently. He wrote a readme file and an example build script. They are named*

That should help you.