[Gmsh] 2d elements appear at 3d meshing
David Colignon
David.Colignon at ulg.ac.be
Fri May 25 12:37:14 CEST 2007
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?
>
>