[Gmsh] voids adjacent to a volume edge

[David Colignon]

Hi Shawn,

I think the best solution would be to define Surface 13 as a hole in Surface 18.

Regards,

Dave

-- 
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
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Shawn Fostner wrote:
> Hi all,
> 
> A problem I thought I'd gotten around a while ago, but I guess not.
> 
> The geometry in question is a rectangular box (surface), with a second 
> box immediately adjacent it (mostly empty space, but defines my meshing 
> region). Now immediately above the surface there is a small region which 
> I have been using to define a metal piece, it is entirely outside but 
> just touching the surface (in the ideal case). Usually I use the metal 
> as a void when I define the region above the surface (plus other 
> objects, irrelevant here).
> 
> The problem is that if I don't leave a gap (even if tiny) between the 
> metal and the surface then the 3d mesh invariably fails, but if I do 
> leave a gap then it throws off the field calculation dramatically 
> (because of small meshing volumes at the corner of that region). I can 
> understand there would be a problem with a void that overlaps the 
> boundary of a volume, or it might be because of the adjacent volume, but...
> 
> Now I guess I could deliberately eliminate any mesh elements in that gap 
> between the void and surface, not sure how though. Otherwise, is there 
> anything else I can try? Any suggestions would be great.
> 
> I've included a version of the geo file, ignore the extra structure. 
> Currently there is a 0.01 unit gap between surface and metal (the object 
> between surfaces 12 and 13.
> 
> Thanks!
> 
> Shawn
> 
> 
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