open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,
I'm a beginner with bluekenue, I would like to make a mesh with the bathymetry to use it in telemac.
I made a mesh but the arrangement of triangle is quite strange, well ordered on the left side of the mesh (probably due to the straight border) and disorganized on the right side. Between the two sides, it makes like a border and i'm afraid it could lead to problems in telemac.
Here is a picture:

and the file:
BDMSM.t3s


Is there a way to avoid this?

Next i've interpolated the bathymetry on the mesh, created a selfin object. And from this object i've tried to make CL in fudaa prepro. But when I load the slf file in the mesh viewer I get the error:
"GRAVE: Erreur lors de la génération de la frontière. Lindice 45347 na pas de voisin Erreur"

Here is the file:
BDMSM3.slf

Thank you for your help!
François

Hi Francois,

if you have a straight line as boundary the triangles of your mesh can be well organized, but as they have to follow also the the other boundary in your model, which is not a straight line, the organization of the triangles will not be so organized anymore, as you said yourself.

considering your error. I had the same error several times. Just look for the node referred to; look it up in your mesh and you will see that, usually due to small scale shapes in your outline, the mesh will contain a node with an error. You can change your mesh size locally; you can delete small scale structures out of your outline or you can manually adapt your mesh (delete node).

Hope this ansewers your question

regards


Sven

Thank you I succeeded

sorry for the repetition, i had an error when I submitted the post and I thaught it didn't worked and I tried others ways to post...

No problem François, the repeated posts have been removed.

Glad to hear you found a solution to your issue.

Thank you!
I had to remove all the small bays to get rid of the problem of "voisin". That's strange...

Is the geometry of the little bays compatible with the mesh density you are supplying in those areas?

Please post a closeup image of the mesh at one or more of the bays.

Martin

For exemple the point 46895 in pink has no neighbour so I closed all the bay to get rid of the problem

Thank you for your help
François

In your case, you have a quad instead of a triangle.
You resample your border. And your definition is too large.

Localy, you can resample the border with a smaller length and deselect the option resample outline.

Hi Francois,

Can you please post the t3m file here and I'll take a look at it.
You'll have to put it in a zip file in order to post it.

Cheers... Martin