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

Threads with tag parallel computing .

Thread Started By Replies Views Last Post  
How to merge the com-file for PART after parallel computation in Flow Chao Li 0 127
Error, Wave-Flow model using parallel run. Haneul Kang 0 424
VERY slow computation! Erin King 0 643
MPI Parallel Computing Yadhunath E.M 1 1246
using hydrodynamic output from parallel computing for WAQ/PART module Anonymous 13 5190
problems about MPI-based parallel calculation hchen kaihua 1 1410
Running Delft 3D in Parallel Jonathan King 4 4012
Running Delft 3D in Parallel Jonathan King 4 4012
example batch file for running Delft3D-FLOW parallel Bart Grasmeijer 2 7389
Problems with DELWAQ-Output Stephanie Zeunert 2 3433
Delft3D-FLOW Parallel Computation Error fung yu 1 3085
Domain Decomposition - how to set up config_d_hydro.xml? Lucas Pion 1 2165
MPI Linking error in Delwaq2 James Tomlinson 45 34294
Error Compiling Delft3D Linux "cannot have a deferred shape" Mariangel Garcia 0 2391
Problems Running Delft3D Simulation in Parallel on Linux Cluster Michael Salisbury 6 5788
Parallel computation in Delft3D 4.01 Lawrence Patrick Bernardo 1 2055
Domain decomposition- several CPUs per domain? Katrin Mar 3 2829
Showing 1 to 17 of 17 entries.