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

Running FLOW (tag:2163)

Diego Pedrozo-Acuña, modified 6 Years ago.

Running FLOW (tag:2163)

Youngling Posts: 6 Join Date: 4/9/13 Recent Posts

I have installed GUI Delft3D_4.00.02 and I successfully compiled the modules tag:2163 using VS2008 and Intell Fortran 11.
After the compilation I end up (in the \bin\win32) with folders:
and \wave
in which the necessary binaries (and other files) are stored.
As detailed in the instructions I copied these folders into myDelft3D\w32\ folder. After this I end up with (among other files/folders) folders:
and \flow2d3d.
Now, when I tried to run the Frisiean Tidal Inlet example from the flow tutorial, the program is looking for the binaries d_hydro.exe or deltares_hydro.exe in the folder myDelft3D\w32\flow instead of \flow2d3d in which the binaries are actually located.

As a quick-simple solution I copied all the files from \flow2d3d to \flow and tried to run the example.
The error I get is:

Starting Delft3D-FLOW computation ...
Executing "C:/Users/ezzdp1/Documents/Delft3D/Delft3D_4.00.02/w32/flow/bin/d_hydro.exe TMP_config_flow2d3d_8344.xml" ...

ERROR: child killed: unknown signal
- Starting "d_hydro.exe" may give more information:
- Run "deltares_hydro.exe <INI-inputfile> -keepXML".
- Run "d_hydro.exe TMP_config_flow2d3d_<processId>.xml".

Could someone please give some advise suggestion to solve this problem?

Just a quick note: I've tried to compile other tag versions (newer) but at the moment with the current version that I have I always get the same fatal error. I will post this in another thread.

Thanks in advance for the help!


Qinghua Ye, modified 6 Years ago.

RE: Running FLOW (tag:2163)

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
dear Diego,

Can you post the bat file you used here as well? Tri-diag file as well.


Qinghua YE
Diego Pedrozo-Acuña, modified 6 Years ago.

RE: Running FLOW (tag:2163)

Youngling Posts: 6 Join Date: 4/9/13 Recent Posts
Hello Qinghua,

Thanks for the quick reply.
I actually recompiled tag:3185 and I got 0 errors, so I used this in Delft3D 4.01.00.rc.09.
I ran the example and the Flow tutorial "Friesian Tidal Inlet" without any problem.

Now, when I tried to run one of the Test I want to run (which is a FLOW-WAVE coupled model) the model runs for sometime ans at some point I got an error (see file attached).

Can you help me to solve this?


Adri Mourits, modified 6 Years ago.

RE: Running FLOW (tag:2163)

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

SWAN can not handle long (file-)names. I expect that when all names used have a maximum length of 7 characters (file names: 11 when including the extension) it will work.