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 with Flow-Wave computacional

Francisco Thiago Parente, modified 7 Years ago.

Error with Flow-Wave computacional

Youngling Posts: 8 Join Date: 1/21/13 Recent Posts
What can i do with this error?


- Delft3D
- Deltares, Delft3D-WAVE Version, Mar 20 2013, 20:12:43
- Open source

*** MESSAGE: Delft3D-WAVE runs online with Delft3D-FLOW
Domain 1 is using depth averaged flow velocity.
Done reading input
Waiting for initialisation from FLOW
*** MESSAGE: Connected to the following 1 FLOW domain(s):
Initialising grids and grid mappings

Coordinate System: Spherical

Waiting for communication with Delft3D-FLOW ...
* Start of Delft3D-WAVE ...
Start loop over SWAN grids, time = 1440.000
Allocate input fields
Allocate and read SWAN depth
Get flow fields, domain 1 :
Time 1440.000 found on com-file, group CURTIM
Write SWAN depth file
Write SWAN velocity 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\w32\wave\bin\swan_4072ABCDE_del_w32_i11_omp.exe
Performing wave computation for: tst.swn
1 arquivo(s) copiado(s).

SWAN is preparing computation

+SWAN is processing output request 1
+SWAN is processing output request 2
+SWAN is processing output request 1
+SWAN is processing output request 2
1 arquivo(s) copiado(s).
1 arquivo(s) copiado(s).

C:\Users\Letacio\Documents\Dashboard\NOVO1>rem exit
>>...End of SWAN run
*** ERROR: file 'norm_end' expected to signal a correct SWAN calculation
Pressione qualquer tecla para continuar. . ."
Adri Mourits, modified 7 Years ago.

RE: Error with Flow-Wave computacional

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

Something went wrong inside SWAN. Check the SWAN output files named "PRINT" and "Errfile" in the working directory (containing the input files).There may be more ASCII SWAN output files in that directory.