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<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">Hi again,</FONT>
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<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">I am re-sending my question below since I still hope for an answer: Is the "geometry healing" function of netgen available in gmsh, or would it be possible to implement it? This would be most useful for all those who need to mesh STEP geometries having adjacent bodies.</FONT></P>
<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">Thank you,</FONT>
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<P><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">Matthias</FONT>
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<P><FONT SIZE=1 FACE="Tahoma">______________________________________________ </FONT>
<BR><B><FONT SIZE=1 FACE="Tahoma">Von: </FONT></B> <FONT SIZE=1 FACE="Tahoma">Zenker, Dr. Matthias </FONT>
<BR><B><FONT SIZE=1 FACE="Tahoma">Gesendet: </FONT></B> <FONT SIZE=1 FACE="Tahoma">Donnerstag, 27. Januar 2011 15:29</FONT>
<BR><B><FONT SIZE=1 FACE="Tahoma">An: </FONT></B> <FONT SIZE=1 FACE="Tahoma">'gmsh@geuz.org'</FONT>
<BR><B><FONT SIZE=1 FACE="Tahoma">Betreff: </FONT></B> <FONT SIZE=1 FACE="Tahoma">"healing" STEP files using netgen</FONT>
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<P><FONT SIZE=2 FACE="Arial">Hi,</FONT>
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<P><FONT SIZE=2 FACE="Arial">I have had a problem with STEP geometries having double surfaces at the interface between adjacent bodies, resulting in a non-conformal mesh. The consequence is that e.g. no current or heat can flow across the interface.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">A workaround I have found is to load the STEP file into Joachim Schöberl's netgen software, execute "Heal geometry" in the "IGES/STEP Topology Explorer/Doctor" and export the "healed" geometry as STEP. When I open that one with gmsh, the duplicate surfaces are gone, and I get a nice conformal mesh. </FONT></P>
<P><FONT SIZE=2 FACE="Arial">I could of course generate the mesh in netgen, but I did not succeed to generate a grid which was fine or coarse where I wanted it to be, since I did not find a functionality equivalent to gmsh's setting of the characteristic length. So I still prefer to generate the mesh with gmsh.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Now comes my question: since at least a part of the netgen functionality seems to be included in gmsh, is it possible that this is also the case for the "geometry healing"? It would be most comfortable to be able to launch that one from within gmsh. So: Is this already possible, or can it be done?</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Thank you,</FONT>
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<P><FONT SIZE=2 FACE="Arial">Matthias</FONT>
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<P><FONT SIZE=2 FACE="Arial">----------------------------------------------------------------</FONT>
<BR><FONT SIZE=2 FACE="Arial">ERBE Elektromedizin GmbH</FONT>
<BR><FONT SIZE=2 FACE="Arial">Dr.rer.nat. Matthias Zenker</FONT>
<BR><FONT SIZE=2 FACE="Arial">Dipl. Phys.</FONT>
<BR><FONT SIZE=2 FACE="Arial">Grundlagenentwicklung / Fundamental Development</FONT>
<BR><FONT SIZE=2 FACE="Arial">Waldhoernlestrasse 17</FONT>
<BR><FONT SIZE=2 FACE="Arial">72072 Tuebingen</FONT>
<BR><FONT SIZE=2 FACE="Arial">Germany</FONT>
<BR><FONT SIZE=2 FACE="Arial">Phone + 49 (0) 7071 755 - 226</FONT>
<BR><FONT SIZE=2 FACE="Arial">Fax + 49 (0) 7071 755 - 5226</FONT>
<BR><FONT SIZE=2 FACE="Arial">E-Mail: <</FONT><A HREF="mailto:Matthias.Zenker@erbe-med.com"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">mailto:Matthias.Zenker@erbe-med.com</FONT></U></A><FONT SIZE=2 FACE="Arial">></FONT>
<BR><FONT SIZE=2 FACE="Arial">URL: </FONT><A HREF="http://www.ERBE-med.com"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">http://www.ERBE-med.com</FONT></U></A>
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