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

wave input-time series

shanas pr, modified 9 Years ago.

wave input-time series

Padawan Posts: 29 Join Date: 10/20/11 Recent Posts

How can i give the time series wave condition for Delft3d wave?
The format of giving input i needed?
The boundary condition i am giving as uniform and i need to specify the spectra using a file?( was it .bnd file format not mentioned anywhere?)
how could this be done ?

thanks in advance

shanas pr, modified 9 Years ago.

RE: wave input-time series

Padawan Posts: 29 Join Date: 10/20/11 Recent Posts
Thanks to Sergio Ferrari

he solved the problem

.The way to do it is to create e a wavecon file with the following structure.

* Itdate Hs Tp Dir(º) ms wl windspeed wind dir.(º)
2 8 * number of rows number of columns
0 0 2. 0 10 0 0.0 0
720 0 2. 0 10 0 0.0 0

You can specify time series of wve haight, period, wind speed and direction.
It has to be in the working directory and the extension of the file has to be the name of mdw file. For example if you have a file called test.mdw, the wavecon will be called wavecon.test

refer: A.2.9 Several wave conditions with time points in<wavecon.rid> in Delft3d -wave user manual