[snappyHexMesh] SHM - Change tolerance to deal with gaps in CAD geom

Lisandro Maders · March 20, 2016, 18:58

Hi,

I have a geometry which has some gap in the CAD, but I am not able to edit this. Is there any way to change tolerance in snappyHexMesh in order to make such gaps invisible to the mesh generator?

The problem is that I have fluid inside this geometry, and I should not. The figure shows the geometry. In the top, it was well recognized, but the bottom part of the engine it was meshed inside it..

Best regards,

Lisandro

Doug68 · March 21, 2016, 05:11

I would have thought it would be better to repair the STL using something like the MeshLab: http://meshlab.sourceforge.net/
Then use surfaceConvert function to clean your stl and see that its good for use.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] surfaceAutoPatch generate internal faces so SHM doesnot read the whole CAD	rsa	OpenFOAM Meshing & Mesh Conversion	0	March 7, 2019 08:03
[CAD formats] CAD export for SHM	plucas	OpenFOAM Meshing & Mesh Conversion	0	January 17, 2019 11:43
CHT-Problem: Gaps and intersections in CAD	Zhudasch	ANSA	1	October 23, 2017 09:32
Importing CAD geometry and Editing edges to match	Ahmed	CFX	15	March 21, 2016 13:39
which program in phoenics can change CAD file	Xyj	Phoenics	4	May 29, 2001 07:48

March 21, 2016, 05:11		#2
Doug68 Member Join Date: Nov 2010 Posts: 62 Rep Power: 16	I would have thought it would be better to repair the STL using something like the MeshLab: http://meshlab.sourceforge.net/ Then use surfaceConvert function to clean your stl and see that its good for use.