Hi Serban<div><br></div><div>Ah, That's what I've done. I was thinking there might be some extra processing for the ignored elements. Thanks.</div><div><br></div><div>Regards</div><div><br></div><div>Theodore</div>
<div><br><div class="gmail_quote">On 7 July 2011 21:14, <span dir="ltr"><<a href="mailto:Serban.Georgescu@uk.fujitsu.com">Serban.Georgescu@uk.fujitsu.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="EN-US" link="blue" vlink="purple">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Hi Theodore,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">I’m afraid that currently I cannot share the software
(internal use only), but the idea is simple. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">First I go to the $Nodes section, and read all coordinates. Then
I go the $Element section, and for each line I split into tokens. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">The first one is the element type, and I only look at tetrahedral
(4 for 1st order tetra and 11 for 2nd order). The rest I ignore. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">I read according to the mesh file format:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">elm-number elm-type number-of-tags < tag > ...
node-number-list<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">so basically I skip the tags and only read the conenctivity
information.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">That's about it.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Cheers,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Serban<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> Ted Kord
[mailto:<a href="mailto:teddy.kord@gmail.com" target="_blank">teddy.kord@gmail.com</a>] <br>
<b>Sent:</b> 07 July 2011 20:57<br>
<b>To:</b> Serban Georgescu<br>
<b>Cc:</b> <a href="mailto:gmsh@geuz.org" target="_blank">gmsh@geuz.org</a><br>
<b>Subject:</b> Re: [Gmsh] MSH Format<u></u><u></u></span></p>
</div><div><div></div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Hi Serban,<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">It does, thanks. <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">You couldn't possibly send me the converter could you.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Regards<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Theodore<u></u><u></u></p>
<div>
<p class="MsoNormal">On 7 July 2011 20:41, <<a href="mailto:Serban.Georgescu@uk.fujitsu.com" target="_blank">Serban.Georgescu@uk.fujitsu.com</a>>
wrote:<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Hi Theodore,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">I am currently doing exactly what you
are saying.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">I have a converter that reads only the
tetrahedral elements from the mesh file and outputs a mesh format specific to
the FEM solver that I am using. I then set the boundary conditions using the
Pre-Post tool that comes with the solver. So I am ignoring all non-tetrahedral
elements in the Gmsh mesh file.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Hope that answers you question.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Cheers,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Serban</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span><u></u><u></u></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be" target="_blank">gmsh-bounces@ace20.montefiore.ulg.ac.be</a>
[mailto:<a href="mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be" target="_blank">gmsh-bounces@ace20.montefiore.ulg.ac.be</a>]
<b>On Behalf Of </b>Ted Kord<br>
<b>Sent:</b> 07 July 2011 20:28<br>
<b>To:</b> <a href="mailto:gmsh@geuz.org" target="_blank">gmsh@geuz.org</a><br>
<b>Subject:</b> [Gmsh] MSH Format</span><u></u><u></u></p>
</div>
<div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">This
may be a naive question but humour me.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I've
meshed my geometry using Gmsh and the mesh file has the usual format. In
the $Elements section, there's connectivity for triangles and tetrahedra. Am I
correct in saying that:<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">a)
the triangles are surface/boundary elements and<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">b)
I can ignore the triangles (if for the moment, I'm not concerned with boundary
conditions, etc) and only use the connectivity information for the tetrahedra
and still have the mesh and its nodes correctly represented? <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">If
the answers to these are 'NO', is there a way for me to generate a mesh with
only nodes and connectivity information for tetrahedral elements only?<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">..<u></u><u></u></p>
</div>
<div>
<div>
<p class="MsoNormal">$MeshFormat<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">2.2
0 8<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">$EndMeshFormat<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">$Nodes<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">241401<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">1
2.848267 -65.8432 2.187612<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">..<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">..<u></u><u></u></p>
</div>
<div>
<div>
<p class="MsoNormal">$EndNodes<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">$Elements<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">1379514<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">1
1 2 0 7 1102 1101<u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal">..<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">..<u></u><u></u></p>
</div>
<div>
<div>
<p class="MsoNormal">210000
4 2 0 9 189345 47114 189340 189339<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">210001
4 2 0 9 189345 47114 48392 189340<u></u><u></u></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal">$EndElements<u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<p class="MsoNormal"><br>
-- <br>
Best regards,<u></u><u></u></p>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Theodore<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
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<p class="MsoNormal"><br>
<br clear="all">
<br>
-- <br>
Best regards,<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Theodore<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div></div></div>
</div><div><div></div><div class="h5">
<table><tbody><tr><td bgcolor="#ffffff"><font color="#000000"><pre>______________________________________________________________________
Fujitsu Laboratories of Europe Limited
Hayes Park Central, Hayes End Road, Hayes, Middlesex, UB4 8FE
Registered No. 4153469
This e-mail and any attachments are for the sole use of addressee(s) and
may contain information which is privileged and confidential. Unauthorised
use or copying for disclosure is strictly prohibited. The fact that this
e-mail has been scanned by Trendmicro Interscan does not guarantee that
it has not been intercepted or amended nor that it is virus-free.</pre></font></td></tr></tbody></table>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Best regards,<div><br></div><div>Theodore</div><div><br></div><br>
</div>