[Gmsh] #231: a cube meshed in 5x5x5 produce 137 vertices instead of 125

[Denis Davydov]

Dear developers,

I created a bug ticket, but forgot to put your email as CC, thus I do forward it here.

Kind regards,
Denis 

On 1 Apr 2014, at 08:49, Gmsh <gmsh at ace20.montefiore.ulg.ac.be> wrote:

> #231: a cube meshed in 5x5x5 produce 137 vertices instead of 125
> ----------------------------------------------+-----------------------------
> Reporter:  gmsh                               |       Owner:          
>    Type:  defect                             |      Status:  new     
> Priority:  major                              |   Milestone:  Gmsh 3.0
> Keywords:  transfinite, hexahedral, vertices  |  
> ----------------------------------------------+-----------------------------
> I used transfinite lines, surfaces, volumes to get hexahedral mesh.
> 
> Mesh.Algorithm = 8;//delquad
> Mesh.Algorithm3D=6;//Frontal Hex
> 
> Results look ok in GMSH (64 Hexahedra, 0 Prisms, 0 Pyramids), but number
> of nodes is wrong, namely 137 instead of 125.
> 
> Interestingly enough, this problem does not occur in 2x2x2 case.
> .geo script is attached.
> 
> Gmsh version is 2.8.4. Behaviour is the same for OSX and Linux.
> 
> -- 
> Ticket URL: <https://geuz.org/trac/gmsh/ticket/231>
> Gmsh <http://geuz.org/gmsh>
> A three-dimensional finite element mesh generator with built-in pre- and post-processing facilities