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

Problem in Compiling Delft3d on Windows 7 64bit

Ali Khoshkholgh, modified 5 Years ago.

Problem in Compiling Delft3d on Windows 7 64bit

Youngling Posts: 19 Join Date: 6/23/12 Recent Posts
Hi everyone. I am using VS 2010 and Intel Visual Fortran Composer XE 2013 for compiling the last version of Delft3d(4440). I got the error as follow:

Error 410 error LNK1104: cannot open file 'Debug\flow2d3d_openda_dll.obj' D:\New-Delft3d4440\src\engines_gpl\flow2d3d\packages\flow2d3d_openda\LINK flow2d3d_openda_intel13

Could you please let me know how can i fix the problem and compile the code.
Best Regards
Qinghua Ye, modified 5 Years ago.

RE: Problem in Compiling Delft3d on Windows 7 64bit

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
Hi Ali,

this dll is for the OPENDA use of delft3D computational core, and it is not relevant in 99% of usage of you, I believe. So you can continue your work with the compiled executables.

It is a known problem for us as well. Since OpenDA type of using is not of the highest priority for the time being as well, we would not solve it in a short time.