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 mpi .

Thread Started By Replies Views Last Post  
Modelling Paritally Penetrating Walls Ajay Sampath 8 8843 undefined reference to .... (Linux) Thomas Boyington 11 7132
Delft3d Compilation Error | MPI 1.4.1 Anonymous Anonymous 1 2041
Unable to compile Huy Tran Quang Pham 0 497
Unable to compile Huy Tran Quang Pham 0 486
MPI and automated division of domain Simon Wulp 1 1841
Compilation on Linux: general remarks Adri Mourits 9 11351
Compilation on Windows: general remarks Adri Mourits 1 4663
symbol lookup error,, MPI_Init Giordano Lipari 2 4346
Compiling Delft3D in 32-bit Linux system LI LI 6 3787
Compiling Delft3D in 32-bit Linux system LI LI 6 3787
Space varying wind and MPI Rohit Kulkarni 1 1957
Make install mpi.mod error Drew Mahedy 1 7713
Example Error in Dirk Smit 10 4222
running in mpi mode, error:" undefined symbol: mpi_initializ Sheng Lu 3 2977
Water quality modelling from MPI simulation and multiple COM files Ben Williams 8 8637
Parallel in more than one node in linux? Jose Manuel Fernandez Jaramillo 2 2942
Problems running (64 bits) George Schramkowski 2 4044