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

*** ERROR: Unable to open file SWANOUT2

A D, modified 2 Years ago.

*** ERROR: Unable to open file SWANOUT2

Youngling Posts: 15 Join Date: 9/25/17 Recent Posts


I am trying to run an online flow-wave coupled model. The model runs fine for about 12% when I get the following error - 


>>...End of SWAN run
  Allocate output fields
  Read SWAN output
*** ERROR: Unable to open file SWANOUT2

I couldn't find this error or a solution anywhere else on the internet. Any help would be greatly appreciated.

Thank you

lean red, modified 8 Months ago.

RE: *** ERROR: Unable to open file SWANOUT2

Youngling Posts: 1 Join Date: 6/30/20 Recent Posts
I like the post which you shared here and thanks for sharing this to us. is the site that Sears Holdings Corporation (SHC) and SHO employees are required to go to if they want to check their schedules. The first step in order to perform the 88sears associate login is to access the site itself. You can access the 88sears associate login page. Schedule at
keth kin, modified 17 Days ago.

RE: *** ERROR: Unable to open file SWANOUT2

Youngling Posts: 1 Join Date: 2/12/21 Recent Posts
The Taco Bell survey will help you tell Taco Bell your opinion about their food and services on their tell the bell survey page, which includes Taco Bell survey winners. Taco Bell is currently offering various deals and coupons, check out Taco Bell Offers & Deals page for more money-saving opportunities at Taco Bell. Use tacobell survey code on the receipt to take part in the survey.