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

Output for Specific Locations

Kristine Baillieul, modified 8 Years ago.

Output for Specific Locations

Youngling Posts: 1 Join Date: 3/13/12 Recent Posts
I am trying to output a table file for three locations and I get this error in the print file:
TABLE 'Observat' HEAD 'Observations\31.locn1t001 .tab' XP YP DEP HS DIR RTP T
** Error : Illegal keyword: T

** Error : Illegal keyword: DSPR
** Error : Illegal keyword: UBOT
** Severe error : Read error with variable VEL
-> VEL item=
** Severe error : No value for variable DIR
-> DIR item=




COMPUTE STAT 20080924.000000
** No start of computation because of error level: 3
** To ignore this error, change [maxerr] with the SET command


Any help would be appreciated
Adri Mourits, modified 8 Years ago.

RE: Output for Specific Locations

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

The line "TABLE ... HEAD ... ", written by Delft3D-WAVE, has a maximum length of 79 characters. Using the file name 'Observations\31.locn1t001 .tab' does not fit and the line is truncated. The easiest solution is using a shorter file name. When the line(s) are correctly written, it should read:
TABLE 'Observat' HEAD 'locn1t001 .tab' XP YP DEP HS DIR RTP TM01 _
                                       DSPR UBOT WIND VEL