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

 

Message Boards

How to switch off the advection terms in the Delft3D momentum equation?

Guoxiang Wu, modified 5 Years ago.

How to switch off the advection terms in the Delft3D momentum equation?

Youngling Posts: 16 Join Date: 8/20/11 Recent Posts
Hi all,

I want to turn off the horizontal advection terms, to see the effects of nonlinear advection in the generation of tide asymmetry. I checked the code, and target the subroutines 'mom_cyclic' and 'mom_cw', which are called by subroutine 'uzd' and 'sud' in serial, respectively, in each half-timestep of the ADI scheme. Advection terms is calculated there and can be output. But when solving the momentum equations, the code for advection terms are not so clear and straightfoward. Does anybody know to switch off this term? Any suggestions are welcome!

Guoxiang
Guoxiang Wu, modified 5 Years ago.

RE: How to switch off the advection terms in the Delft3D momentum equation?

Youngling Posts: 16 Join Date: 8/20/11 Recent Posts
the code is so sophisticated. Does anybody know where can I get the descriptions of variables?

Any response?