<div dir="ltr">Hi Christophe,<div><br></div><div> Thanks for the clarification, I misunderstood.</div><div><br></div><div>Could you maybe point me to a tutorial or an example that elaborates a bit more on how I would now tag the surfaces manually based on the vtk providing the boundaries?<br> I assume you tagged the surfaces and volume afterwards in order to create the nice figure you sent?</div><div><br></div><div>Thanks!</div><div><br></div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Kind regards,</div><div><br></div><div>Lisa <br></div><div><br></div><div>----------------------------------------------------------------------------------------------------------------------</div><div><b>Lisa Pankewitz</b></div><div>PhD student</div><div>Simula Research Laboratory</div><div>Martin Linges vei 25<br>1364 Fornebu</div><div>Office 329</div><div><a href="mailto:lisa@simula.no" target="_blank">lisa@simula.no</a></div><div><img src="https://docs.google.com/uc?export=download&id=1_8poiAtQF4MfCPR4gY_1ihjiPfS20mG0&revid=0BzUd-6x7y_vCOEp3ZFdReVVvZzdERXV5TFEvS3ZzV0FaS2tJPQ"><br></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 23 Jun 2020 at 08:30, 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 22 Jun 2020, at 19:14, Lisa Pankewitz <<a href="mailto:lisa@simula.no" target="_blank">lisa@simula.no</a>> wrote:<br>
> <br>
> Dear Christophe,<br>
> <br>
> thanks so much for your helpful and fast response. It is really appreciated!<br>
> <br>
> Just to double check: Does that mean that the assignment of surface names with the syntax I used before does not work any longer in gmsh ?<br>
> <br>
<br>
It does of course. But when new surfaces are created (by ClassifySurfaces) you'll need to identify them as well.<br>
<br>
> Thanks so much and have a great day :)<br>
> Kind regards,<br>
> <br>
> Lisa <br>
> <br>
> ----------------------------------------------------------------------------------------------------------------------<br>
> Lisa Pankewitz<br>
> PhD student<br>
> Simula Research Laboratory<br>
> Martin Linges vei 25<br>
> 1364 Fornebu<br>
> Office 329<br>
> <a href="mailto:lisa@simula.no" target="_blank">lisa@simula.no</a><br>
> <br>
> <br>
> <br>
> On Mon, 22 Jun 2020 at 18:10, Christophe Geuzaine <<a href="mailto:cgeuzaine@uliege.be" target="_blank">cgeuzaine@uliege.be</a>> wrote:<br>
> Hi Lisa,<br>
> <br>
> Your script seems quite complicated. Here's a simple one that produces a decent mesh:<br>
> <br>
> Merge "File_1.vtk";<br>
> Merge "File_2.vtk";<br>
> Merge "File_3.vtk";<br>
> Merge "File_4.vtk";<br>
> Merge "File_5.vtk";<br>
> Merge "File_6.vtk";<br>
> Merge "File_7.vtk";<br>
> <br>
> Coherence Mesh; // remove duplicate mesh nodes<br>
> <br>
> ClassifySurfaces{21 * Pi/180, 1, 0 /* or 1 */, 40 * Pi / 180};<br>
> CreateGeometry;<br>
> <br>
> Mesh.CharacteristicLengthMax = 10;<br>
> Mesh.CharacteristicLengthMin = 0.1;<br>
> Mesh.CharacteristicLengthFromCurvature = 1;<br>
> Mesh.MinimumElementsPerTwoPi = 20;<br>
> <br>
> s() = Surface{:};<br>
> Surface Loop(1) = s();<br>
> Volume(1) = 1;<br>
> <br>
> We still need to add some tools to automate the identification of curves/surfaces created by ClassifySurfaces. For now you'll need to tag them manually (or use some geometrical tests, e.g. using the Gmsh API).<br>
> <br>
> Christophe<br>
> <br>
> <ok.png><br>
> <br>
> <br>
> <br>
>> On 22 Jun 2020, at 17:25, Lisa Pankewitz <<a href="mailto:lisa@simula.no" target="_blank">lisa@simula.no</a>> wrote:<br>
>> <br>
>> To whom it may concern,<br>
>> <br>
>> I am trying to remesh a geometry based on .vtk files.<br>
>> I merge 7 .vtk files. 4 vtk files are used to create a surface that consists of 4 compounds. All 7 surfaces together define the volume. I assign tags (names) to the physical surfaces, which I need in later steps. Unfortunately, I realized the surface does not remesh. I checked several tutorials and parameters but could not yet find a possibility to keep the tags and remesh the surface and the volume in the assigned characteristic length in gmsh version 4.<br>
>> I tried<br>
>> ''' <br>
>> RefineMesh<br>
>> '''<br>
>> but this only splits the elements instead of performing an optimal refinement.<br>
>> <br>
>> Do you by chance know what I could assign in order to remesh the surface AND the volume and not only the volume?<br>
>> <br>
>> Thanks so much for your time and have a wonderful day!<br>
>> Kind regards,<br>
>> <br>
>> Lisa <br>
>> <br>
>> ----------------------------------------------------------------------------------------------------------------------<br>
>> Lisa Pankewitz<br>
>> PhD student<br>
>> Simula Research Laboratory<br>
>> Martin Linges vei 25<br>
>> 1364 Fornebu<br>
>> Office 327<br>
>> <a href="mailto:lisa@simula.no" target="_blank">lisa@simula.no</a><br>
>> <br>
>> <File_4.vtk><File_3.vtk><File_2.vtk><complex.geo><File_1.vtk><File_5.vtk><File_6.vtk><File_7.vtk>_______________________________________________<br>
>> gmsh mailing list<br>
>> <a href="mailto:gmsh@onelab.info" target="_blank">gmsh@onelab.info</a><br>
>> <a href="http://onelab.info/mailman/listinfo/gmsh" rel="noreferrer" target="_blank">http://onelab.info/mailman/listinfo/gmsh</a><br>
> <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>
> _______________________________________________<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>