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<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Hi Orlando,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">I invite you to take a look at tutorial t13.geo in Gmsh documentation
<a href="http://gmsh.info/doc/texinfo/gmsh.html#t13_002egeo">here</a>. If I understand your issue correctly, copy-pasting that tutorial should be almost everything you need to do. Simply change the initial mesh to merge for an STL export of your surface. You
also have to change the value assigned to Field[1].F for the characteristic length you want your mesh to have. Eventually, if you want second order tetrahedrons, you will need add somewhere in the script file the command :
<i>Mesh.ElementOrder = 2 ;</i>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Let me know if it worked or if you have other questions,<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif;color:#000099">Guillaume DILASSER</span><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#000099"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">Doctorant DACM / LEAS<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">CEA - Centre de Saclay - Bât.123 - PC 319c</span><span style="color:#000099"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">91191 Gif sur Yvette Cedex - France -</span><span style="color:#000099"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099"><a href="mailto:guillaume.dilasser@cea.fr">guillaume.dilasser@cea.fr</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>De :</b> gmsh [mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be]
<b>De la part de</b> RIVERA ROLDAN, Jorge Orlando<br>
<b>Envoyé :</b> lundi 26 juin 2017 09:45<br>
<b>À :</b> 'gmsh@onelab.info' <gmsh@onelab.info><br>
<b>Objet :</b> [Gmsh] gmsh of a closed surface<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif">Good Morning List-Members
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif">I need your help
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">I have a closed surface defined by a triangles. What I have are the node coordinates and a connectivity table , ( I can produce abaqus or stl or vtk format
)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Node1 X1 Y1 Z1
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:10.0pt;font-family:"Arial",sans-serif">Node2 X2 Y2 Z2<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:10.0pt;font-family:"Arial",sans-serif">….<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:10.0pt;font-family:"Arial",sans-serif">Noden Xn Yn Zn<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Triangle1 Node1 Node2 Node3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Triangle2 Node3 Node4 Node5<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Could it be possible to use gmsh to generate a Tet mesh second order ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Any hint , comment , link or example will be warmly welcome !!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks so much !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Orlando <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Mit freundlichen Gruessen / Best Regards<br>
<br>
<b>Orlando Rivera </b><br>
MTU Aer</span><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif">o Engines AG<br>
Engineering Systems CAE (POEA)<br>
Dachauer Str. 665<br>
80995 Muenchen<br>
Germany<br>
Tel +49 89 1489-6689</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Fax +49 (0)89 14 89-96951<br>
<u><span style="color:blue"><a href="mailto:orlando.rivera@mtu.de"><span style="color:black">orlando.rivera@mtu.de</span></a><br>
<a href="http://www.mtu.de/"><span style="color:black">http://www.mtu.de</span></a></span></u></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:8.0pt;font-family:"Arial",sans-serif;color:silver">--</span><span lang="DE" style="font-size:12.0pt;font-family:"Times New Roman",serif"><br>
</span><strong><span lang="DE" style="font-size:8.0pt;font-family:"Arial",sans-serif;color:silver">MTU Aero Engines AG</span></strong><span lang="DE" style="font-size:12.0pt;font-family:"Times New Roman",serif"><br>
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