open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,

I'm trying to do a simple Box test runing telemac 3D.
I get no errors messages when I use 2 layers, but if I put an additionnal one (NOMBRE DE PLANS HORIZONTAUX = 3, for example) I get the following error message :

CALCOT : LES PLANS 1 ET 2
SE CROISENT AU POINT 33
COTE BASSE : -109.998046875000
COTE HAUTE : -110.000250812051
DIFFERENCE : -2.203937051490357E-003
HAUTEUR : -2.938582735321566E-002



PLANTE : ARRET DU PROGRAMME APRES ERREUR


I don't understand where the problem come from.
I hope you can help me.
Best regards.

Julien

hello Julien,
What kind of mesh transformation do you use (see key word)?

Hello Razafy,

I don't apply any mesh transformation
So it is value 1 by default I think. (regular plans)

I often find that a crash in CALCOT (with this kind of error message) is the thing that finally stops a run that has gone unstable for other reasons. In other words, the problem probably isn't anything to do with CALCOT.

If you take a look at the output for a few time-steps before the crash, you'll probably see some rather large fluctuations in the free surface (and, since you're using sigma coordinates, the intermediate planes).

If you can attach your test case, then we might be able to see where the problem lies. What specifically are you trying to do in this test case?

Thanks Chris, I forget to put values on my open boundery!
So plans were "crashing" on each others after the first calculation step due to free surface equal to zero.