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

d_hydro.exe not found when running batch file [Delft3d Dashboard Standalone

Daniel Iwugo, modified 2 Years ago.

d_hydro.exe not found when running batch file [Delft3d Dashboard Standalone

Youngling Posts: 2 Join Date: 9/9/17 Recent Posts
Hello all,

When running the batch file after a successful tsunami computation, i am met by an error stating the file d_hydro.exe cannot be found.
I've scoured my PC and cannot find the specific file in question. I have also looked through other threads, but unfortunately I am still stuck and unable to successfully run the batch file for post processing purposes.

I am a complete rookie when it comes to this, so clarity and fool-proof explanation is probably required in a solution.
Thank you for reading!
Abhishek Varma Datla, modified 2 Years ago.

RE: d_hydro.exe not found when running batch file [Delft3d Dashboard Standa

Youngling Posts: 15 Join Date: 9/25/17 Recent Posts
Hey I have had a similar issue when I first ran Delft3D. I searched my PC too and I found it in the folder ...\Delft3D_new\win64\flow2d3d\bin. Just copy everything in this folder to the original Delft3d folder in C\Program Files.