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

Delft3D-WAVE computation (SWAN executable does not exist)

Marshal Praveen, modified 6 Years ago.

Delft3D-WAVE computation (SWAN executable does not exist)

Youngling Posts: 4 Join Date: 10/16/12 Recent Posts
I tried compiling Tag version using VS2010 Ultimate and Visual fortran composer XE 2011 update 13. I found all my examples running clean after compilation. But when I tried to run tutorial wave Siu-Lam Input file in Delft3D 4.00.01 (Open Source Hydro-Morphodynamics), MSWindows after using the binaries, I found it shows the following

Starting Delft3D-WAVE computation ...
- Delft3D
- Deltares, Delft3D-WAVE Version, Dec 10 2013, 18:25:41
- Open source
*** MESSAGE: Delft3D-WAVE runs stand alone
Done reading input
Initialising grids and grid mappings
Start loop over SWAN grids, time = 1080.000
Allocate input fields
Allocate and read SWAN depth
Write SWAN depth file
Deallocate input fields
Write SWAN input
<<Run SWAN...
SWAN batchfile executed for Delft3D
Using swan.bat in directory C:\Delft3D\w32\lib\
Using C:\Delft3D\swan\bin\swan_4072ABCDE_del_w32_i11_omp.exe
Performing wave computation for: siu.swn
ECHO is off.
SWAN executable does not exist

Please suggest me rectify the error.

Many thanks to all
Adri Mourits, modified 6 Years ago.

RE: Delft3D-WAVE computation (SWAN executable does not exist) (Answer)

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

See this post.


Marshal Praveen, modified 6 Years ago.

RE: Delft3D-WAVE computation (SWAN executable does not exist)

Youngling Posts: 4 Join Date: 10/16/12 Recent Posts
Hi Adri,
Thanks a lot. I got it solved by changing the directory in swan.bat from C:\Delft3D\swan\bin\swan_4072ABCDE_del_w32_i11_omp.exe to C:\Delft3D\w32\wave\bin\swan_4072ABCDE_del_w32_i11_omp.exe
Now the tutorial runs perfect.