problematic geometry

Electrico · May 3, 2010, 13:03

Hello,

I am trying to mesh a 3D helmet in Ansys workbench, i created named selections (inlet, outlet, helmet) in meshing to import to fluent. when i mesh the fluid over the helmet, the error "problematic geometry" occurs in the named selections. The "problematic geometry" is referenced on a surface of the helmet. Can someone help with this?

PSYMN · June 15, 2010, 01:23

The error says... "The following surfaces cannot be meshed with acceptable quality. Try using a different element size or virtual topology."

Those small sliver surfaces are the problems...

So there is the suggestion to use a smaller size.

Or you could use Virtual Topology to group those sliver surfaces together into more reasonable surfaces.

Or you could switch to a method that doesn't rely on Patch conforming tetra. Try the Patch Independent Tetra and see how you like it.

I don't have time to run it right now, but hopefully I will get the chance and try again later this week.

dren · October 22, 2013, 12:52

Hi,

I have a similar problem with my geometry too.

Did you figure out a way to mesh your part?

Thanks

May 3, 2010, 13:03	problematic geometry	#1
Electrico New Member Eli Join Date: Mar 2010 Posts: 4 Rep Power: 16	Hello, I am trying to mesh a 3D helmet in Ansys workbench, i created named selections (inlet, outlet, helmet) in meshing to import to fluent. when i mesh the fluid over the helmet, the error "problematic geometry" occurs in the named selections. The "problematic geometry" is referenced on a surface of the helmet. Can someone help with this?

June 15, 2010, 01:23	Hints...	#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	The error says... "The following surfaces cannot be meshed with acceptable quality. Try using a different element size or virtual topology." Those small sliver surfaces are the problems... So there is the suggestion to use a smaller size. Or you could use Virtual Topology to group those sliver surfaces together into more reasonable surfaces. Or you could switch to a method that doesn't rely on Patch conforming tetra. Try the Patch Independent Tetra and see how you like it. I don't have time to run it right now, but hopefully I will get the chance and try again later this week.

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October 22, 2013, 12:52		#3
dren New Member Join Date: Oct 2013 Posts: 9 Rep Power: 13	Hi, I have a similar problem with my geometry too. Did you figure out a way to mesh your part? Thanks