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 delft3d-wave .

Thread Started By Replies Views Last Post  
file 'norm_end' expected to signal a correct swan calculation George Victor 0 891
Is D3D-WAVE time frame limited?? rop rop 3 1460
Grid does not display correctly in DELFT3D-WAVE A Yawer 2 1954
SWAN - boundary limits or memory constraints? Joao Morim do Nascimento 6 5129
Obstacle in GUI SEYED MOIN MOJABI 3 2944
Delft3D Observation Points Ruairi MacIver 0 3439
D3D-WAVE: Coupled simulation yields unexpected outputs Ruairi MacIver 3 5505
Online coupling FLOW & WAVE Ruairi MacIver 1 3644
INFO coordinate system delft3d-wave Luciana Giuzio 1 4243
Delft3D-WAVE: Non-stationary mode parameters Ruairi MacIver 4 5979
Delft3D-WAVE: Non-stationary mode parameters Ruairi MacIver 4 5979
Delft3D-WAVE: Defining wave boundary conditions on a segment Ruairi MacIver 3 5049
D3D-WAVE: Multiple segment boundaries cause runtime segmentation fault Ruairi MacIver 0 1708
Delft3D-WAVE: Structured grid, nesting and domain decomposition Ruairi MacIver 2 5859
D3D-WAVE: Quirks when using SpectrumSpec = from file Ruairi MacIver 1 3541
space-varying non-stationary spectral files Joao Morim do Nascimento 3 2718
Iinternally limited max wind speed when using instationary D3D WAVE? Ben Williams 0 2137
DELFT3D-WAVE: Imposing time-varying wave boundary conditions via .bcw file Ruairi MacIver 9 12660
D3D-WAVE: Relation between 'northdir' parameter and rectilinear grid axes Ruairi MacIver 2 2623
Flexible Mesh Delft3D WAVE Renan Ribeiro 4 6441
Showing 1 to 20 of 27 entries.