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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Good afternoon,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>First, congratulations for the development of Gmsh,
this tool has a lot a great qualities.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I try to mesh several very thin surfaces, structured
in a network of cracks. Two large surfaces are situated on both sides to this network
and communicates with it. For large cracks, the mesh is correct (so I think the
file .geo is well defined, I can send the source files if needed), but for thinner
cracks (40e-<st1:metricconverter ProductID="6 m" w:st="on">6 m</st1:metricconverter>
compared to a total domain of 10e-<st1:metricconverter ProductID="2 m" w:st="on">2
m</st1:metricconverter> for example), I am not able to use a characteristic
length in the cracks smaller than their size, Gmsh sends “segmentation
fault” due to 3 identical points in qtest and crashes. The options used
for meshing surface are plane, MeshAdapt+Delaunay, a very low geometry
tolerance is used and other options are standard. I know this case is complicated
to mesh, but would advanced options or particular strategies be able to solve
this problem?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Thank you for your time.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>David Crevoisier.<o:p></o:p></span></font></p>
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