[Gmsh] 2d elements appear at 3d meshing

[David Colignon]

Hi Alexander,

in your .geo file, you didn't define any Physical entity, so ALL mesh elements are saved, including line segments, surface triangles, etc. as explained in

http://www.geuz.org/gmsh/doc/texinfo/gmsh-full.html#SEC33

If you want to only save tetrahedra, just add 

Physical Volume (999) = {109,111,113,115} ; 

at the end of your .geo file

Cheers,

Dave



Alexander Rabtchevich wrote:
> Hello, Dave
> 
> Here is the mesh, obtained with the settings you'd described. Gmsh 2.0.7 
> under Windows.
> 
> If you look through the elements from the beginning you will find there 
> are some very strange ones. At least I do not understand 2 points elements.
> 
> Sorry for a big file.
> 
> David Colignon wrote:
>> Hi Alexander,
>>
>> with Netgen, only 1 smothing step and tetrahedra quality optimization 
>> turned on, I got a rather nice looking mesh, so I don't understand 
>> your problem.
>> Can you send me the mesh you obtain ?
>>
>> Cheers,
>>
>> Dave
>>
>>
>>
>> Alexander Rabtchevich wrote:
>>> I've got the same problem as before - in order to decrease the number 
>>> of elements I use big characteristic length. And when the program 
>>> produces 3d meshing, it makes even segments, not only triangles 
>>> instead of all tetrahedrals. The 3d algorithm is Netgen, number of 
>>> smoothing steps is 15, tetrahedra quality optimization is turned on.
>>>
>>> Is there a solution to the problem described?
> 
>