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! 

 

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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: 
/web/delft3dfm/forum

Post your questions, issues, suggestions, difficulties related to our Delft3D Flexible Mesh Suite on the new forum.

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** PLEASE TAG YOUR POST! **

 

 

Sub groups
D-Flow Flexible Mesh
DELWAQ
Cohesive sediments & muddy systems

 


Message Boards

Restart a Sediment Calculation

PS
Patrick Specht, modified 7 Years ago.

Restart a Sediment Calculation

Youngling Posts: 4 Join Date: 8/1/11 Recent Posts
Hallo all,

I am running a Delft3D job calculating hydrodynamics and sediment transport. After a few days of simulation I had a hardware problem and the job stopped. Now I want to restart the job via restart-file as initial condition from the last time step.

My question is, how can I implement the bed level (from the last time step) in the restart job, because I noticed that it is not saved in the restart file.

Thanks in advance.
Patrick
Renan Ribeiro, modified 7 Years ago.

RE: Restart a Sediment Calculation (Answer)

Padawan Posts: 55 Join Date: 3/23/11 Recent Posts
Hello Patrick,

An alternative is: export the last result from cum/erosion with Quickplot and add it in your initial bed level, using Quickin.

Regards,
Renan
PS
Patrick Specht, modified 7 Years ago.

RE: Restart a Sediment Calculation

Youngling Posts: 4 Join Date: 8/1/11 Recent Posts
Hello Renan,

thanks for your answer; I already thought of this, but in the output from quickplot you always get values in the cell centres, which naturally differ from the ones in the cell corners.

Regards,
Patrick
Adri Mourits, modified 7 Years ago.

RE: Restart a Sediment Calculation

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Patrick,

The restart file does not contain bed level information.

Another workaround is to restart from map-file. By default, also the depth in the cell centres (DPS) is read from map-file (when available) and used to initialize DPS, without additional interpolation.

Regards,

Adri