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<p>Dear Gmsh community,</p>
<p>I'm fighting with Gmsh to set up a model of a quarter cylinder
using the new OpenCascade based facilities. The following script
is considered:</p>
<p><tt>SetFactory("OpenCASCADE");</tt><tt><br>
</tt><tt><br>
</tt><tt>cylinder = newv;</tt><tt><br>
</tt><tt>Cylinder(cylinder) = { 0.0 , 0.0 , 0.0 ,
0.0 , 0.0 , 60.0, 175.0 };</tt><tt><br>
</tt><tt>box = newv;</tt><tt><br>
</tt><tt>Box(box) = { 0.0 , 0.0 , -50.0
,200.0 , 200.0 ,200.0 };</tt><tt><br>
</tt><tt>lst() = BooleanIntersection { Volume{ cylinder }; Delete;
} </tt><tt><br>
</tt><tt> { Volume{ box }; Delete; };</tt><tt><br>
</tt><tt>pt_volume = lst[0];</tt><tt><br>
</tt><tt><br>
</tt><tt>Characteristic Length{ PointsOf{ Volume{:}; } } = 6.0;</tt><tt><br>
</tt><br>
</p>
<p>However, the surface mesh on the (remaining part of the) cylinder
is rather odd, it contains one single layer of elements axially.
(Please find attached the image).<br>
</p>
<p><img src="cid:part1.B4F147B5.A560264D@imperial.ac.uk" alt=""
width="635" height="266"></p>
<p>How could I get a proper, isotropic mesh?</p>
<p>Thank you for your help in advance,</p>
<p>Jozsef</p>
<p><br>
</p>
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