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<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:#1F497D">Hi Martin,</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:#1F497D">thanks for the pointers. I will try them out and may come back with more questions in 10 days or so (on vacation next week… ;) )</span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:#1F497D">Matthias</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:#1F497D">----------------------------------------------------------------</span><span style="color:#1F497D">
</span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> Martin Vymazal [mailto:martin.vymazal@vki.ac.be]
<br>
<b>Gesendet:</b> Donnerstag, 16. Februar 2012 14:21<br>
<b>An:</b> gmsh@geuz.org<br>
<b>Betreff:</b> Re: [Gmsh] anisostropic meshing / bamg algorithm</span></p>
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<p class="MsoNormal"> </p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">Hello Matthias,</span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">you can specify the entries of the mesh metric using a field which is called 'MathEvalAniso'. In case you have svn sources of gmsh, you can find an
example using MathEvalAniso in GMSH_SOURCE_ROOT/benchmarks/3d/CubeAniso.geo</span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">The source code of this field is in Mesh/Field.[h/cpp]</span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">Some more examples concerning background fields and their usage are also available in gmsh reference manual.</span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">Best regards,</span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">Martin Vymazal</span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin:0cm; margin-bottom:.0001pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif"">On Thursday 16 February 2012 13:05:33 Zenker, Dr. Matthias wrote:</span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif"">Hi Martin,</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif"">thank you for your answer. How do I define such an anisotropic mesh size field? Do you have a short example, or is
this described somewhere? I did not find it in the Reference manual.</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif"">Best regards,</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif"">Matthias</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><b><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif""> </span></b><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><b><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif"">Von:</span></b><span style="font-size:10.0pt; font-family:"Tahoma,sans-serif","serif""> Martin Vymazal
<a href="mailto:[mailto:martin.vymazal@vki.ac.be]">[mailto:martin.vymazal@vki.ac.be]</a>
<br>
<b>Gesendet:</b> Donnerstag, 16. Februar 2012 12:17<br>
<b>An:</b> <a href="mailto:gmsh@geuz.org">gmsh@geuz.org</a><br>
<b>Betreff:</b> Re: [Gmsh] anisostropic meshing / bamg algorithm</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:9.0pt; font-family:"Sans Serif","serif""> </span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">Hello Matthias,</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">you can use the bamg algorithm by calling 'gmsh -2 -algo bamg my_file.geo' from command line. For 3d anisotropic mesh, you do the same with '-3 -algo mmg3d'.
</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">You need to supply a mesh size field which will tell the anisotropic algorithm in which direction to refine the mesh.</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">Best regards,</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">Martin Vymazal</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">On Thursday 16 February 2012 10:56:06 Zenker, Dr. Matthias wrote:</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"">Hi,</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"; color:#1F497D"> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"; color:#1F497D">does anyone have an answer to the question below?</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"">It was said that an anisotropic mesh can be achieved using the bamg algorithm. I have some questions:</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">1.</span><span style="font-size:7.0pt">
</span><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">My 3D geometry consists of several layers stacked in z direction. Some of these layers are rather thin. I would like to have a mesh which is finer in z direction than in x and y direction.
Can this be achieved using the bamg algorithm? If so, how?</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">2.</span><span style="font-size:7.0pt">
</span><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">How can I access this algorithm from the GUI? I did not find it in Options – Mesh.</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">3.</span><span style="font-size:7.0pt">
</span><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">If not accessible from the GUI, how else can I use it?</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:9.0pt; margin-left:30.0pt"><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">4.</span><span style="font-size:7.0pt">
</span><span style="font-size:9.0pt; font-family:"Sans Serif,serif","serif"">Is there any documentation available concerning this topic? I did not find anything in the gmsh manual (which is from October 2010 btw).</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"">Thank you,</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif""> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"">Matthias</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:11.0pt; font-family:"Calibri,sans-serif","serif"; color:#1F497D"> </span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Calibri,sans-serif","serif"; color:#1F497D">----------------------------------------------------------------</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">ERBE Elektromedizin GmbH</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Dr.rer.nat. Matthias Zenker</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Dipl. Phys.</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Grundlagenentwicklung / Fundamental Development</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Waldhoernlestrasse 17</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">72072 Tuebingen</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Germany</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Phone + 49 (0) 7071 755 - 226</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">Fax + 49 (0) 7071 755 - 5226</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">E-Mail: <</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""><a href="mailto:Matthias.Zenker@erbe-med.com"><span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#0057AE">mailto:Matthias.Zenker@erbe-med.com</span></a></span><span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">></span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
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<span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#1F497D">URL:
</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""><a href="http://www.ERBE-med.com"><span style="font-size:10.0pt; font-family:"Arial,sans-serif","serif"; color:#0057AE">http://www.ERBE-med.com</span></a></span></p>
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<span style="font-size:10.0pt; font-family:"Calibri,sans-serif","serif"; color:#1F497D">----------------------------------------------------------------</span><span style="font-size:9.0pt; font-family:"Sans Serif","serif""></span></p>
<p style="margin-right:30.0pt; margin-bottom:0cm; margin-left:30.0pt; margin-bottom:.0001pt">
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_____________________________________________________________________<br>
ERBE Elektromedizin GmbH<br>
Firmensitz: 72072 Tuebingen<br>
Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede<br>
Registergericht: Stuttgart HRB 380137</span></p>
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<br>
_____________________________________________________________________<br>
ERBE Elektromedizin GmbH<br>
Firmensitz: 72072 Tuebingen<br>
Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede<br>
Registergericht: Stuttgart HRB 380137</span></p>
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<br>
_____________________________________________________________________<br>
ERBE Elektromedizin GmbH<br>
Firmensitz: 72072 Tuebingen<br>
Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede<br>
Registergericht: Stuttgart HRB 380137<br>
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