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


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Everyone is responsible for product quality and not just testers Testers ge

Yuvaraj singh, modified 22 Days ago.

Everyone is responsible for product quality and not just testers Testers ge

Jedi Knight Posts: 150 Join Date: 8/3/20 Recent Posts
Everyone is responsible for product quality and not just testersTesters get misjudged as "Gate Keepers" of quality for a very long time. Its a myth. In many projects, only when the testers/testing team approves, the project will be released. They were also considered as "Quality Police" and treated as such in the product development. There were even stories of Testers stopping a release by giving a "No-Go" because of few bugs not fixed by the programmers. These are all myths or wrong understanding about the role of testers. Right from defining the requirements, programming, testing, deploying, staging, and maintenance, everyone is responsible for product quality and not just testers. ICP-CAT certification