RE: How to import Grid(D-Flow FM) into Delft 3D-Flow

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Jian Gao, modified 7 Years ago.

How to import Grid(D-Flow FM) into Delft 3D-Flow

Youngling Post: 1 Join Date: 3/30/15 Recent Posts

I created Grid(D-Flow FM) file following tutor from Manual. The flexible mesh can not be exported into grid(RGFGRID) file.
Delft3D-Flow –flow input-domain-open grid command, only .grd file (grid(RGFGRID)) could be imported. Then how to import the flexible mesh into Delft3D-Flow?

Erik de Goede, modified 8 Years ago.

RE: How to import Grid(D-Flow FM) into Delft 3D-Flow

Youngling Posts: 16 Join Date: 1/7/11 Recent Posts

Dear Jian Gao,

In RGFGRID you can switch between structured and unstructured grids via "Operations" and then "Convert grid", for which there are two options: "Regular to irregular" or ""Irregular to regular". When saving a grid (i.e. exporting) you can only save a structured grid in "Grid(RGFGRID)" and an unstructured grid in "Grid(D-Flow FM)" format. An unstructured grid cannot be saved in the structured format "Grid(RGFGRID)".

With kind regards,

Erik de Goede
Deltares

Erik de Rooij, modified 7 Years ago.

RE: How to import Grid(D-Flow FM) into Delft 3D-Flow

Youngling Posts: 21 Join Date: 12/22/20 Recent Posts

Hi Erik.

The option "Convert Grid -> Irregular to regular" doesn't make effect. Do I have to do something before with my grid?

Erik de Goede, modified 6 Years ago.

RE: How to import Grid(D-Flow FM) into Delft 3D-Flow

Youngling Posts: 16 Join Date: 1/7/11 Recent Posts

Dear Mahatma,

When converting a grid from irregular to regular (or vice versa) only the colour of the grid changes. It changes from dark blue (structured grid) to light blue (unstructured grid). Also at the corner point the nodes become visible in case of an unstructurerd grid. The grid itself doesn't change, which might suggest that nothing has happened, which is not true. The status has changed to another 'mode' and other commands have become active; see the commands in grey (inactive) and black (active).

With kind regards,

Erik de Goede, Deltares

Alireza Shadmani, modified 6 Years ago.

RE: How to import Grid(D-Flow FM) into Delft 3D-Flow

Youngling Post: 1 Join Date: 10/23/18 Recent Posts

Hello. I have this problem too. I switch irregular grid into regular grid but lots of area of my unstructured grid removed. How can I use this full unstructured grid in Delft3D-Flow when input file has no _net.nc ?

Thanks for answering to my question.