<div dir="ltr"><div>Prof. Ghristophhe, thank you for your tip!</div><div><br></div><div><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="" class="gmail-">Right now I have tried it but I have obtained the following errors:</span></span></div><div><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="" class="gmail-"><br></span></span></div><div><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="" class="gmail-">Error : No elements in region 2 <br>Info : Done meshing 3D (0.005192 s)<br>Info : Optimizing 3D mesh...<br>Info : Optimizing volume 2<br>Info : Done optimizing 3D mesh (0.00019 s)<br>Info : 537 vertices 1236 elements<br>Error : ------------------------------<br>Error : Mesh generation error summary<br>Error : 104 warnings<br>Error : 105 errors<br>Error : Check the full log for details<br>Error : ------------------------------<br></span></span></div><div><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="" class="gmail-"><br></span></span></div><div><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="" class="gmail-"></span></span></div><div><div class="gmail-text-wrap gmail-tlid-copy-target"><div class="gmail-result-shield-container gmail-tlid-copy-target" tabindex="0"><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="">In any case, this idea is very good.</span> <span title="" class="gmail-">In spite of this, I would like to know if it is possible to replicate this case only with tetrahedra, in this way I can avoid using different base functions in my finite element code.</span></span><span class="gmail-tlid-translation-gender-indicator gmail-translation-gender-indicator"></span></div><div class="gmail-result-shield-container gmail-tlid-copy-target" tabindex="0"><br></div><div class="gmail-result-shield-container gmail-tlid-copy-target" tabindex="0">Best regards</div><div class="gmail-result-shield-container gmail-tlid-copy-target" tabindex="0"><br></div><div class="gmail-result-shield-container gmail-tlid-copy-target" tabindex="0">O.<br></div></div><span class="gmail-tlid-translation gmail-translation" lang="en"><span title="" class="gmail-"></span></span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 5, 2020 at 9:19 AM Christophe Geuzaine <<a href="mailto:cgeuzaine@uliege.be">cgeuzaine@uliege.be</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
<br>
> On 3 Mar 2020, at 13:45, Octavio Castillo Reyes <<a href="mailto:ocastilloreyes@gmail.com" target="_blank">ocastilloreyes@gmail.com</a>> wrote:<br>
> <br>
> Dear gmsh developers, <br>
> <br>
> I would like to know if it is possible build a tetrahedral mesh with following features: <br>
> <br>
> - structured tetrahedral elements on boundaries<br>
> - unstructured tetrahedral elements inside the domain<br>
> <br>
> Could you give some tips/ideas to build this kind of mesh (if possible).<br>
> <br>
<br>
I will be done automatically (with a pyramid layer to connect both). Here's an example:<br>
<br>
<a href="https://gitlab.onelab.info/gmsh/gmsh/-/blob/master/benchmarks/extrude/hybrid_pyramids.geo" rel="noreferrer" target="_blank">https://gitlab.onelab.info/gmsh/gmsh/-/blob/master/benchmarks/extrude/hybrid_pyramids.geo</a><br>
<br>
Christophe<br>
<br>
<br>
<br>
> Best regards<br>
> <br>
> O.<br>
> <br>
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<br>
— <br>
Prof. Christophe Geuzaine<br>
University of Liege, Electrical Engineering and Computer Science <br>
<a href="http://www.montefiore.ulg.ac.be/~geuzaine" rel="noreferrer" target="_blank">http://www.montefiore.ulg.ac.be/~geuzaine</a><br>
<br>
<br>
<br>
</blockquote></div>