When I import the KVLCC2 geometry in IGES format (this is a well known testcase for marine hydrodynamics) in SALOME it looks very uneven and the patches are not connected:
You can find many pictures of this same geometry on the web and they look perfectly smooth.
Is what you see actually how the geometry will be processed or is this a visualisation issue? Should I convert it to a different format before importing in SALOME?
I had a similar experience earlier when importing a different geometry that looked very smooth in Rhino3D.
Thanks in advance and best,
Duncan
I feel that it is just a render thing. I have had the same doubt in the past, where the same geometry file looked better in other software. As long as it creates a single shell file without error, it is fine for meshing.
Hi,
iges is a poor surface-only format. Imported shapes often need some repairing. You can use Sewing to make the faces connected. Try with different values 1e-7, 1e-6… until all faces are connected (use Inspection> Check free boundaries in GEOM).
To improve the display of curved faces, change Deflection coefficient to a finer value (right-click in the view).
Best regards,
Christophe
Thank you both for your replies. Indeed lowering the Deflection coefficient works perfectly:
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