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<p class="MsoNormal">Dear Gmsh developers,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have recently moved from Gmsh 3.0.6 to the most recent 4.3.0, and I have noticed that the .msh files for extruded meshes with layers are slightly different than before, because they contain periodicity relations.<o:p></o:p></p>
<p class="MsoNormal">To me this is puzzling, because I do not have any periodic mesh. Why are the periodicity relations written even on non-periodic meshes? is there a way to turn this off?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Second, I have noticed that Gmsh is returning an error when reading these .msh files. I have attached two meshes (2D and 3D) that prove this: the .msh files have been generated from the attached .geo ones. For example, when I open square.msh,
I get <i>“Error: Cannot find periodic counterpart of vertex 3 on edge 2 nor on 2”</i>.
<o:p></o:p></p>
<p class="MsoNormal">Since these are two extremely simple meshes, I was wondering whether there is a bug in the definition of the periodicity relations, or whether some commands I am using need to be changed with the new Gmsh version.<o:p></o:p></p>
<p class="MsoNormal"><i><o:p> </o:p></i></p>
<p class="MsoNormal">For your information, I have to use the MSH 2.2 format for compatibility with my CFD code.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:4.0pt"><span style="mso-fareast-language:NL">Marco Tiberga<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">PhD candidate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#00B0F0;mso-fareast-language:NL">Delft University of Technology<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">Faculty of Applied Sciences<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">Radiation Science & Technology Department</span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">Mekelweg 15, 2629 JB Delft, The Netherlands</span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="mso-fareast-language:NL">E-Mail:<span style="color:gray"> </span><u><span style="color:blue"><a href="mailto:m.tiberga@tudelft.nl"><span style="color:blue">m.tiberga@tudelft.nl</span></a></span></u></span><span style="font-family:"Segoe UI","sans-serif";color:black;mso-fareast-language:NL"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL" style="mso-fareast-language:NL">Website: </span>
<span style="mso-fareast-language:NL"><a href="http://www.nera.rst.tudelft.nl/"><span lang="NL" style="color:blue">http://www.nera.rst.tudelft.nl/</span></a></span><span lang="NL" style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
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