Hi Marc, when I mesh your geometry (without defining physical groups) and open it with Elmerfem (www.csc.fi/elmer), I can see all surfaces as boundaries. So they must be in the msh file. The problem may be the way your cfd software reads the msh file. HTH, Matthias
---------------------------------------------------------------- ERBE Elektromedizin GmbH Dr.rer.nat. Matthias Zenker Dipl. Phys. Grundlagenentwicklung / Fundamental Development Waldhoernlestrasse 17 72072 Tuebingen Germany Phone + 49 (0) 7071 755 - 226 Fax + 49 (0) 7071 755 - 5226 E-Mail: <mailto:[email protected]> URL: http://www.ERBE-med.com <http://www.erbe-med.com/> ---------------------------------------------------------------- ________________________________ Von: Marc Secca [mailto:[email protected]] Gesendet: Dienstag, 29. März 2011 12:57 An: [email protected] Betreff: [Gmsh] Mesh STEP file Hello! I am trying to mesh the attached STEP file in gmsh 2.4.2 and define boundaries for a cfd solver. I can merge the file and select the relevant surfaces and volume as physical groups but after I mesh to geometry, I open the .msh file created and cannot see the boundaries I defined. I tried saving the geometry as a .geo file but surfaces are missing at the pipe intersections. Is there a better way to do this? Can I repair the missing surfaces? Thanks for any help you can provide. Marc
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