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 startup script

Jacqueline Pedrera Yanes, modified 6 Years ago.

error startup script

Youngling Posts: 2 Join Date: 3/7/13 Recent Posts
I have a problem, when I want to start the simulation (Flow GUI), I get the following error message:

couldn't read file "C:/Deltares/delft3d/4.01.00.rc7/delft3d/win32/menu/bin/create_config_xmlt.tcl": no
such file or directory while executing
"source[file join $env(D3D_HOME)$env(ARCH) menu bin create_config_xmlt.tcl"
(file "C:\user\...\4.01.00rc7\delft3d\/win32menu/bin/hyd_online.tcl") line20

I use windows 7 and only click on the "start" button and the message window appear!

How I can solve this problem?

Thank you in advance.

Best regards

Arjen Markus, modified 6 Years ago.

RE: error startup script

Jedi Knight Posts: 223 Join Date: 1/26/11 Recent Posts
I have checked this with release candidate 9, instead of 7 - no problem.

If you copied the message, then the cause is a typo in the file "hyd_online.tcl": the file name is "create_config_xml.tcl", not "create_config_xmlt.tcl" (note the extra t)

Could you check that?
Adri Mourits, modified 6 Years ago.

RE: error startup script (Answer)

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

See the Frequently Asked Questions.