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

Problems instaling Delft3D

Juan Urrego, modified 4 Years ago.

Problems instaling Delft3D

Youngling Posts: 6 Join Date: 2/19/16 Recent Posts
Hi everyone,

Related to the compilation

I compiled the program using Visual studio 2013 + intel 15 in windows 10, at the end of the compilation appeared "Build: 35 succeeded, 0 failed, 38 up-to-date, 10 skipped". Then when I run the examples, I am not sure if the program is running well. What I saw is:
a) In the Hydrodynamic simulation Command prompt winndow: it runs well and finish

b) In the Wave simulation Command prompt winndow: just show the below sentences:
"Running testcase 01_standard ..."
"Running testcase 01_standard parallel ..."
"Running testcase 02_domaindecomposition ..."
"Running testcase 03_flow-wave ..."
"Running testcase 03_flow-wave parallel ..."

c) Nothing more happened[/indent]

The above process was made using the Delft source code version 5740 (

Releted to the the instalation of the latest pre-compiled version (Installer, GUI, pre- and post-processing tools plus manuals and tutorials - Delft3D 4.01.01.rc.03)

1) In the FTP-site I didn't find the "Delft3D zip" file <>.

2) The instrutions (install_ohmw_4.01.01.rc.03.pdf) states "install the the redistributable <vcredist_x86 (2010).exe>" but I didn't find it in the FTP-site

3) In the step "Unzip the file <> on an appropriate directory, say c:\Deltares\Delft3D_4.01.01.rc.03." I don't have the directory "c:\Deltares\", Which is the step where this directory was created?

Thanks in advance for considering my issues,
Adri Mourits, modified 4 Years ago.

RE: Problems instaling Delft3D (Answer)

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

Running examples:
Please check the tri-diag-files and the log files in the related subdirectories. I expect the simulation crashed/hanged on testcase 03_parallel, because testcase 04_, o5_ etc. did not appear. Did you execute "smpd -install"? If not, please check the comments at the top of "...\examples\01_standard\run_flow2d3d_parallel.bat".

Installing the GUI:
1) It's in subdirectory "delft3d"
2) It's in subdirectory "redist"
3) Release Candidates (".rc.") are distributed via zip-files instead of self-extracting/installing binaries. This means that you have to create an empty install directory yourself, for example "c:\Deltares"