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<font face="tahoma" size="2">Hello,<br><br>I want to create a mesh around a blade within a cylindrical domain. <br><br>The geometry is available as an IGES-file and I added it to my geo-file by typing: <br><br>Geometry.Tolerance = 0.0001; <br>Geometry.OCCSewFaces = 1; <br>Merge "blade.igs";<br><br>As you can see in the attached picture, the blade is bounded by the surface of the hub (and a hidden helping surface at the tip). After defining the volume by selecting all surfaces, gmsh is meshing through the blade at the hub. I tried to add the border edges (no. 17,26,...) of the blade to the hub's surface (no.1) with "Line In Surface", but it doesn't seem to be working. <br><br>So how can I tell Gmsh that the interior of the blade does not belong to the meshing volume? <br><br>Is there any way to seperate / cut / extract certain parts of the surface, e.g. the connecting surface between the hub and the blade?<br><br>It would be a great help if someone has any suggestions!<br><br>Kind regards,<br>Stefan<br></font>
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