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

Bathymetry values differ in Delft 3d compared to QUICKIN

GS
Gobikanthan Sathiaseelan, modified 4 Years ago.

Bathymetry values differ in Delft 3d compared to QUICKIN

Youngling Posts: 8 Join Date: 2/14/16 Recent Posts
Hi Everyone,

I am trying to figure out the effect of ocean bathymetry on storm surges.

For that, I created bathymetry using QUICKIN

When I input to the Delft 3d Flow model, bathymetry values were changed for first 2 columns.But nothing wrong with the dep. file which was created using QUICKIN.

Can anyone help me with this?

Regards,
Gobi.
U
Stef Boersen, modified 4 Years ago.

RE: Bathymetry values differ in Delft 3d compared to QUICKIN

Dear Gobi,

Did you take into account the two dummy rows in D3D?
For example, to model a 30x30 grid you need a 32x32 depth file.

Can you maybe add the depth and grid files?

Regards,
Stef
GS
Gobikanthan Sathiaseelan, modified 4 Years ago.

RE: Bathymetry values differ in Delft 3d compared to QUICKIN

Youngling Posts: 8 Join Date: 2/14/16 Recent Posts
Hi Stef,

I didn't take into account of the dummy rows. If there are two dummy rows what is the value to be given to them? Or else can I neglect them and continue without considering them??

I have to add the observation points to find out the maximum surge height. In my case, maximum surge height will come in the left side mid point. Where do I have to apply the observation point then?

I am attaching my grid, depth file and mdf file here.

Please look at the values of the first column and second column in mdf file using visualization area and check with the depth file. Depth file seems ok with constant depth.But, the mdf visualization shows different values for first two columns.

Thanx for your help.

Regards,
Gobi.
MS
Mathanki Sivapatham, modified 4 Years ago.

RE: Bathymetry values differ in Delft 3d compared to QUICKIN

Youngling Posts: 15 Join Date: 1/20/16 Recent Posts
Hello Gobi,
I am a new user of Deft3D, I am trying to create a depth file.
But what i have is the AutoCAD file with the z-coordinates.
I would like to know how I could convert it to depth file or use the coordinate to create a depth file and also how to use the quickin tool.

Can you please help me with this?
Thank you!