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

Run the tcl script create_config_xml

Gabriel Ruiz, modified 2 Years ago.

Run the tcl script create_config_xml

Padawan Posts: 59 Join Date: 9/30/11 Recent Posts
Hi Delft 3d users,

Sorry if my questions are too basic, but I would like to run the tcl script create_config_xml.tcl. In order to run any tcl script, I have installed ActiveTcl in my computer. I am newbie in tcl language and for this reason, I have doubts about whether I am invoking the right way the tcl procedure or not.

In my tcl session, I use:
tclsh create_config_xml test.mdf test.mdf test2run.xml 0 “false”

As result, nothing happens.

Is right, the way that I run to the create_config_xml file?
My main doubt is about am I establishing my arguments, right?
About the sp value, is the value correct?
Should I give the namefiles without extensions?


Adri Mourits, modified 2 Years ago.

RE: Run the tcl script create_config_xml (Answer)

Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Gabriel,

The script "create_config_xml.tcl" is used by the GUI.

If you request for/receive the GUI, compile the kernels and add them to the GUI installation, you can run a computation using the GUI. You don't need to execute "create_config_xml.tcl" yourself.

More info: see