snappyHexMesh error

griztown · November 16, 2009, 18:17

Hi all,

I'm running snappyHexMesh to create a mesh around a body I have and I get the following error:

--> FOAM Warning :
From function treeBoundBox::treeBoundBox(const UList<point>&, const UList<label>&)
in file octree/treeBoundBox.C at line 157
cannot find bounding box for zero-sized pointFieldreturning zero

I'm having a hard time figuring out where this problem is coming from. Everything was working great with a similar geometry, but now with a new stl file, I'm getting this error. Any ideas on where I should be looking? The error comes up while determining initial surface intersections. Looking through the stl file and the block mesh, there shouldn't be any problems finding an intersection.

Any help is greatly appreciated.

fra76 · November 17, 2009, 14:06

It looks like a problem in your stl file, like a triangle with three coincident points or something like this.
Which version of OpenFOAM are you using? Something has been improved in the 1.6.x.

Francesco

griztown · November 17, 2009, 14:08

Thanks Francesco,

I'm running 1.6.x. I'll look into the stl file some more. Thanks for the tip!

November 16, 2009, 18:17	snappyHexMesh error	#1
griztown New Member Ted Brenner Join Date: Oct 2009 Location: Oregon, WI Posts: 12 Rep Power: 5	Hi all, I'm running snappyHexMesh to create a mesh around a body I have and I get the following error: --> FOAM Warning : From function treeBoundBox::treeBoundBox(const UList<point>&, const UList<label>&) in file octree/treeBoundBox.C at line 157 cannot find bounding box for zero-sized pointFieldreturning zero I'm having a hard time figuring out where this problem is coming from. Everything was working great with a similar geometry, but now with a new stl file, I'm getting this error. Any ideas on where I should be looking? The error comes up while determining initial surface intersections. Looking through the stl file and the block mesh, there shouldn't be any problems finding an intersection. Any help is greatly appreciated.

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November 17, 2009, 14:06		#2
fra76 Senior Member Francesco Del Citto Join Date: Mar 2009 Location: Zürich Area, Switzerland Posts: 209 Rep Power: 7	It looks like a problem in your stl file, like a triangle with three coincident points or something like this. Which version of OpenFOAM are you using? Something has been improved in the 1.6.x. Francesco

November 17, 2009, 14:08		#3
griztown New Member Ted Brenner Join Date: Oct 2009 Location: Oregon, WI Posts: 12 Rep Power: 5	Thanks Francesco, I'm running 1.6.x. I'll look into the stl file some more. Thanks for the tip!