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

Flow computation error with compiled code when used with gui

Gyan Basyal, modified 8 Years ago.

Flow computation error with compiled code when used with gui

Hi everyone,

I am using VS 2010 with Intel Parallel Studio XE 2011. I have compiled tag without any errors (and yes ran the example successfully) and copied the w32 folder to the installed directory of Delft3d gui. I get the following message when I run the hydrodynamics:

Starting Delft3D-FLOW computation ...
Executing "C:/Program Files (x86)/Delft3D/w32/flow/bin/d_hydro.exe TMP_config_flow2d3d_6324.xml" ...
couldn't execute "C:\Program": no such file or directory while executing
"open $name "r""
(procedure "runcmd" line 7)
invoked from within
"runcmd $command"
(file "C:/Program Files (x86)/Delft3D/w32/flow/bin/deltares_hydro.exe/lib/app-deltares_hydro/deltares_hydro.tcl" line 260)
invoked from within
"source {C:/Program Files (x86)/Delft3D/w32/flow/bin/deltares_hydro.exe/lib/app-deltares_hydro/deltares_hydro.tcl}"
("package ifneeded app-deltares_hydro 1.0" script)
invoked from within
"package require app-deltares_hydro"
(file "C:/PROGRA~2/Delft3D/w32/flow/bin/deltares_hydro.exe/main.tcl" line 4

Any suggestion would be appreciated. Thanks.
Qinghua Ye, modified 8 Years ago.

RE: Flow computation error with compiled code when used with gui

Jedi Council Member Posts: 610 Join Date: 3/2/11 Recent Posts
hi Gyan,

Thanks for your interests in Delft3D system!

The gui and attached scripts cannot recognize the space between "program" and "files" you specified. If you move the Delft3D files to another folder, the error will disappear.

Hope this will help,