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 running model in Delft Dashboard

Zamara Fuentes, modified 8 Years ago.

Error running model in Delft Dashboard

Youngling Posts: 1 Join Date: 6/13/12 Recent Posts

I am following the presentation given in the Webinar #7 "How to set up a Delft 3D Model with Delft Dashboard", but I am confronting a problem. After I selected the tide stations and I have saved the work, I go to the work folder to press on the generated batch file. The batch file shows up with o kb and when I press it gives the following error:

batch_flw.bat is not a valid Win32 application.

Does anyone know why the batch file is not being generated?

I am using Windows 7, 64 bits.

Anas Abdul Rahman, modified 7 Years ago.

RE: Error running model in Delft Dashboard

Hai Zamara,

Delft Dashboard generates flow version 5.00. To be able to run the batch flow file:

1. save the mdf file as version 5.00. If this is not possible, then please refer to the method in the link below