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

What is a Complex Domain?

Yuvaraj singh, modified 24 Days ago.

What is a Complex Domain?

Jedi Knight Posts: 150 Join Date: 8/3/20 Recent Posts
What is a Complex Domain?A context where the problems are well understood and solutions are pretty evident.  For example, in the case of product support, the problems are very well known and solutions are evident. An approach to solve the problem here is to categorize the problems into buckets, create knowledge base and respond with a solution from knowledge base. One can take the approach of standardizing the operating procedures. Some of the problems that fall into this category are: Production Support, System tickets, assembly lines.
A context where problems are known but solutions may not be evident. At least one would know what questions to explore and how to find a solution. An approach that works in this context is to assess the situation, analyze it and determine the solution.  For example, migration projects, let’s say from legacy system to open stack technology. In such cases, we now understand the problems we are solving as the legacy system is in place for quite some time but we may not know whether Open Stack fulfills everything that legacy system was fulfilling. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->Product Prototyping