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

Error .vfproj opening source code with ftn95

Bram Schnitzler, modified 5 Years ago.

Error .vfproj opening source code with ftn95

Youngling Posts: 1 Join Date: 4/13/13 Recent Posts

I'm a student Civil Engineering at the University of Twente. I'm trying to open the Delft3D source code in Visual Studio 2010 with the Silverfrost FORTRAN compiler FTN95. I'm running Visual studio 2010 on my windows 7 64-bit pc. The FTN95 compiler is installed well in Visual studio 2010 (see first attachment.) but when I open the source code I get a number of errors saying that the project type .vfproj is not supported (see second attachment). Is FTN95 not usable for the source code of Delft3D or is it possible something went wrong installing it? Or is there another problem?

Any response will be appreciated.

Bram Schnitzler
Adri Mourits, modified 5 Years ago.

RE: Error .vfproj opening source code with ftn95

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Bram,

I don't have experience with Silverfrost. You better check the Silverfrost forums/manuals or ask them for help.

Microsoft Visual Studio 2010 opens a solution file (d_hydro_open_source_vs2010.sln) containing references to project files: A project file with extension "vcxproj" refers to a C++ project, and a project file with extension "vfproj" refers to a (Intel?) Fortran project. I can imagine that Silverfrost needs another extension.
Furthermore, some vfproj files contain hard coded references to the Intel Library Directory. You might need to replace them if you reach that point.

Some general tips:
- It might be easier to use Silverfrost from the commandline to compile/link.
- Another way to compile Delft3D on Windows is using the Cygwin environment in combination with the Gnu compilers.