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

Recompile SWAN

SM
SEYED MOIN MOJABI, modified 4 Years ago.

Recompile SWAN

Youngling Posts: 11 Join Date: 10/16/15 Recent Posts
Hi Every body

I have already made some modifications in SWAN. Is it possible to compile this modified SWAN as Wave Module for DELFT3D.


Have any boy any experience on that?

Kind Regards
Moin
delft3d wave linux
Adri Mourits, modified 4 Years ago.

RE: Recompile SWAN (Answer)

Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Moin,

Yes you can. There is one additional change you have to do in SWAN:
on line 2861 in swanpre2.ftn change
CALL MSGERR(2,
into
CALL MSGERR(1,

i.e.

@@ -2859,8 +2859,11 @@
ELSE
! boundary condition on one side of the computational grid
IF (OPTG.EQ.3)
THEN 40.80 40.31
- CALL
MSGERR(2, 40.80 40.31
+ CALL
MSGERR(1, 40.80 40.31
& ' keyword SIDE should not be used for curvilinear
grid') 40.80 40.31
END
IF 40.31
CALL IGNORE ('SIDE')
! *** specification of side for which boundary ***

Regards,

Adri
SM
SEYED MOIN MOJABI, modified 4 Years ago.

RE: Recompile SWAN

Youngling Posts: 11 Join Date: 10/16/15 Recent Posts
Dear Adri

Many thanks for your kind reply.

I will give a try.

Cheers
Moin
SM
SEYED MOIN MOJABI, modified 4 Years ago.

RE: Recompile SWAN

Youngling Posts: 11 Join Date: 10/16/15 Recent Posts
Dear Adri

Thank you for your kind response. If I manage to couple my modified SWAN with D3D, another problem still remains .

I need to use obstacle parameters which is supported by the the modified SWAN, but not byD3D GUI. To solve this problem, two approach could be adopted

1-modifying the mdw filw manually so that it generates these parameters in the swan input file

2-Using matlab scripts to run SWAN and convert SWAN outputs to the com-file needed by D3D-Flow

Which one is more feasible?

Thank you for your time and considerations
Adri Mourits, modified 4 Years ago.

RE: Recompile SWAN (Answer)

Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Seyed,

I would go for option 3: Use the "swan.bat" file to alter the SWAN input after WAVE has prepaired everything and before SWAN is being executed. See this post.

Regards,

Adri