On 29/07/10 09:05, Elvin Verdiyev wrote:
Hello fellow Gmsh users!
I'm new with Gmsh and trying to complete a simple procedure of meshing an
impeller with complete volume, with no holes.
Unfortunately, my meshing does not work properly for some reason.
Here are my steps:
1. Open a new geo file :example.geo
2. File->Merge->Choose the STEP file **provided in the attachment**
3. Elementary Entities ->Add->New->Volume
4. Click on the impeller, and it turns ALL red, no holes, so I press 'e'->'q'
5. Check the options: Tools->Options->Geometry: Include "sew faces"
6. Check the options: Tools->Options->Mesh: Check Frontal, None,
1,1.00,0,1e+022,2......Also under Mesh Advanced include
'optimize the quality of tetrahedra'
Press Mesh-> 3D and I get a very not dense meshing and the manual says I will
get dense mesh( File: according to manual)
which I can further process with calculix, translate to inp file, then include
measurements of the impeller, then run
the inp file, and then do the post processing.
All files are included above, and any help or hint is appreciated. If you need
any further info, I can send more pictures.
Thanks in advance and hope to hear from you guys soon!
Hi Elvin,
just launch Gmsh, and Merge your .stp file. Then with Tools->Visibility you can see that the volume was already defined
in the .stp file and has been recognized by Gmsh. No need to Elementary Entities ->Add->New->Volume etc.
Go to Tools->Options->Mesh->General and in "Element size factor" put a value
lower than 0.3 instead of the default 1.0
Hit "3" or F3 to mesh your impeller. It should works...
Regards,
Dave
--
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
Sart-Tilman B28
Université de Liège
4000 Liège - BELGIQUE
Tél: +32 (0)4 366 37 32
Fax: +32 (0)4 366 29 10
WWW: http://hpc.montefiore.ulg.ac.be/
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Elvin
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