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

Trouble installing Delft3D Graphical User Interface (GUI)

Gabriel Lim, modified 2 Years ago.

Trouble installing Delft3D Graphical User Interface (GUI)

Padawan Posts: 37 Join Date: 5/5/18 Recent Posts



I am having some trouble will the installation process of the GUI.


I received a link for the FTP page. After I log in and click on the <Install-Shield.exe> it comes up with an error message saying: "cannot find installshield.xml or file is empty" and comes up with a blank box as shown in the screenshots I have attached. Please advise! Thank you.


Kind regards,



Adri Mourits, modified 2 Years ago.

RE: Trouble installing Delft3D Graphical User Interface (GUI)

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts

Hi Gabriel,

First you have to download the full content of folder "Delft3D GUI 4.03.01 Windows for source code users/". You can do that using the Microsoft file explorer or Total Commander. When you execute the downloaded "Install-Shield.exe", this problem will not appear.



Hernán Larriva, modified 1 Year ago.

RE: Trouble installing Delft3D Graphical User Interface (GUI)

Hello, Could anyone tell me how can i download all 'process demos' at once?Thanks
Webrob Rotten, modified 10 Months ago.

RE: Trouble installing Delft3D Graphical User Interface (GUI)

Youngling Posts: 1 Join Date: 2/27/20 Recent Posts
Cohesive sediment, or mud, is a mixture of clay particles, silt, sand, organic material, and water Upsers.