[Gmsh] Periodic Boundary Conditions

[Christophe Geuzaine]

pierard at mema.ucl.ac.be wrote:
> I come again with the cube containing around 30 randomly oriented
> ellipsoids which can cross the faces.  I would like to impose
> Periodic Boundary Conditions on the faces (PBC were on the To Do list
> 2 years ago, is it still on it or it's already done ?).
> 
> Is there any chance to mesh this problem with Gmsh ?  Imposing a
> structured mesh (e.g.: transfinite) on all faces seems impossible
> since faces can contain random ellipses (intersection
> ellipsoids-plane).  Should I subdivise the faces ?
> 
> I tried to solve this problem with Netgen but I have always problems
> when meshing near at least one cut between sphere and ellipsoids
> (defined by boolean 3D operations since in Netgen we cannot define 2D
> surfaces).
> 
> I anyone has a hint for this problem, we would be very glad !
> 

Hello Olivier - Unfortunately, we haven't done anything yet to solve 
this problem... Your best bet at the moment is probably to subdivide the 
surface and use a regular (e.g. transfinite) grid on the different parts.

Christophe

-- 
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org