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

Quickplot Error

D Kyriakoudi, modified 12 Months ago.

Quickplot Error

Youngling Posts: 2 Join Date: 5/9/19 Recent Posts
Hello,I used DDB to create an XBeach model and then I used the Matlab toolbox to run my model using as reference my params.txt file. The running process was completed successfully and a NetCDF File was created.However, when I tried to open the file using Quickplot, the following error occured:Catch in d3d_qp\quickview
DATESTR failed converting date number to date vector.
In private\dateformverify at line 28In datestr at line 195
In private\qp_time2str at line 41
In private\qp_plot at line 620
In d3d_qp>d3d_qp_core at line 1971
In d3d_qp at line 44
Does anyone faced this problem, and know how to fix it?
Thanks in advance.DebbiePS. I can't upload the nc.file because is too large.