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

vertcal sediment concentration

Claire BERAUD, modified 4 Years ago.

vertcal sediment concentration

Youngling Posts: 5 Join Date: 1/5/16 Recent Posts
Hello Delft users

I simulate some fine sediment transport (mud) in a depth-averaged (2D) tidal current. The sediment-related output I get are hence 2D. However, I wonder if there is a vertical concentration distribution of sediment over the water-column, so that I can estimate a concentration at various depths?
Indeed, activating an equilibrium concentration at the boundaries will assume a Rouse profile there, so I wonder if it is the same over the whole domain in 2D?

Thank you very much!

Qinghua Ye, modified 4 Years ago.

RE: vertcal sediment concentration (Answer)

Jedi Council Member Posts: 610 Join Date: 3/2/11 Recent Posts
Hi Claire,

Yes. For 2D, a rouse profile is computed vertically.


natalie portman, modified 1 Year ago.

RE: vertcal sediment concentration

Youngling Posts: 1 Join Date: 1/6/20 Recent Posts
A straightforward recipe is proposed to foresee the vertical dissemination of a suspended burden focus in a 2D relentless violent stream. The proposed equation altogether improves Buy Writing Assignment in Australia the notable Rouse recipe where residue focus has an unendingly huge incentive at the channel base and a zero an incentive at the water surface
lavern walter, modified 9 Months ago.

RE: vertcal sediment concentration

Youngling Posts: 2 Join Date: 6/19/20 Recent Posts
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