[Gmsh] #288: Invalid cells for a fine mesh around a sharp leading edge

[GARNAUD Xavier (SAFRAN)]

Dear Christophe,

Here are the step & brep files. I'll test them as soon as I can.
Best regards

Xavier

-----Message d'origine-----
De : Christophe Geuzaine [mailto:cgeuzaine at ulg.ac.be] 
Envoyé : lundi 30 mai 2016 18:06
À : GARNAUD Xavier (SAFRAN)
Cc : gmsh at onelab.info
Objet : Re: [Gmsh] #288: Invalid cells for a fine mesh around a sharp leading edge


Hi Xavier,

There seem to be different issues with the file:

- some curves are duplicated: when refining the curve visualization (Tools->Geometry->Aspect->Curve subdivisions) for example, curves 18 and 36 seem identical. This is likely a problem with the IGES representation: I would suggest using STEP (or even better the native BREP format since the model seems to come from OpenCASCADE).

- the Characteristic Length command is only applied to some of these duplicate curves.

Could you re-send with the BREP instead of the IGES ?

Thanks,

Christophe


> On 30 May 2016, at 15:57, GARNAUD Xavier (SAFRAN) <xavier.garnaud at safrangroup.com> wrote:
> 
> Here is the attachement.
> 
> -----Message d'origine-----
> De : GARNAUD Xavier (SAFRAN)
> Envoyé : lundi 30 mai 2016 15:57
> À : 'gmsh at onelab.info'
> Objet : RE: [Gmsh] #288: Invalid cells for a fine mesh around a sharp 
> leading edge
> 
> Here is an example that gives a similar error (it is not exactly the same but I had to modify the geometry).
> 
> In this case, replacing the cylinder by an edge attractor solves the problem. In my other case it does not.
> Best regards,
> 
> Xavier
> 
> -----Message d'origine-----
> De : Gmsh [mailto:gmsh at ace20.montefiore.ulg.ac.be]
> Envoyé : dimanche 29 mai 2016 09:52
> Objet : Re: [Gmsh] #288: Invalid cells for a fine mesh around a sharp 
> leading edge
> 
> #288: Invalid cells for a fine mesh around a sharp leading edge
> -------------------+-----------------------
> Reporter:  gmsh    |       Owner:  geuzaine
>    Type:  defect  |      Status:  accepted
> Priority:  minor   |  Resolution:
> Keywords:          |
> -------------------+-----------------------
> Changes (by geuzaine):
> 
> * owner:   => geuzaine
> * status:  new => accepted
> 
> 
> Comment:
> 
> Could you attach a small example?
> 
> --
> Ticket URL: <https://onelab.info/trac/gmsh/ticket/288#comment:1>
> Gmsh <http://gmsh.info>
> A three-dimensional finite element mesh generator with built-in pre- 
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--
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine

Tetrahedron V, July 4-5 2016: http://tetrahedron.montefiore.ulg.ac.be
Free software: http://gmsh.info | http://getdp.info | http://onelab.info

#
" Ce courriel et les documents qui lui sont joints peuvent contenir des informations confidentielles, être soumis aux règlementations relatives au contrôle des exportations ou ayant un caractère privé. S'ils ne vous sont pas destinés, nous vous signalons qu'il est strictement interdit de les divulguer, de les reproduire ou d'en utiliser de quelque manière que ce soit le contenu. Toute exportation ou réexportation non autorisée est interdite Si ce message vous a été transmis par erreur, merci d'en informer l'expéditeur et de supprimer immédiatement de votre système informatique ce courriel ainsi que tous les documents qui y sont attachés."
******
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#
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