mesh with elements 715

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gagliar
Posts: 79
Joined: 04 Sep 2009, 16:34
Location: LGGE - Grenoble
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mesh with elements 715

Post by gagliar »

Hello,

Is it possible to generate element 715 with ElmerGird ?

I did try
triangles = True
Element Degree = 1

but I get element 820...
and a message
ElementsToTriangles: not implemented for elementtype 408

If I add Element Innernodes = True
then I have the following message
CreateKnotsExtruded: not implemented for elementtypes 306!

I did try to do it as a second step, starting from the 820 mesh
ElmerGrid 2 2 cube -triangles

but seems not to work (mesh stay with 820 elements).

Do you see an other way to get it work ?

Thanks
Olivier
gagliar
Posts: 79
Joined: 04 Sep 2009, 16:34
Location: LGGE - Grenoble
Contact:

Re: mesh with elements 715

Post by gagliar »

Hello again,


I have also tried to start from a 706 element types mesh and do
ElmerGrid 2 2 cube -increase

I then get 715 type element in mesh.elements but the boundary condition file mesh.boundary contains 0 type boundary element...

Regards
Olivier
raback
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Re: mesh with elements 715

Post by raback »

Hi Olivier

This does not seem to be well supported. I tried to resolve the problem and made a fix (svn update). At least

Code: Select all

ElmerGrid 1 3 cube.grd -triangles -increase
goes through. Only for ElmerPost to say that "unknown element type". So it is rather difficult to debug this one. Probably this element hasn't been much used.

BR, Peter
gagliar
Posts: 79
Joined: 04 Sep 2009, 16:34
Location: LGGE - Grenoble
Contact:

Re: mesh with elements 715

Post by gagliar »

Hi Peter,


Making a mesh with 715 element type using ElmerGrid -triangles -increase seems to work now. The point now is that element 715 are not recognized and I got the following message for the Stokes solver:
WARNING:: GetElementType: Element type code 715 not found. Ignoring element.
WARNING:: LoadMesh: Unknown element type 715 ignoring element.

So, we know now why this element type hasn't been much used ;)

Don't know if it makes sense to implement this type of elements? From my side, I was performing some convergence tests of the Stokes solver and I did try all the possible combination between element type and stabilisation methods. Not really need it at that time.

See you
Olivier
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