[ANSYS Meshing] Mesh error

wiggles8x0 · March 19, 2016, 18:38

Should be a simple fix but honestly I can't figure out whats causing this errors to show up:

"A patch-conforming tetrahedral mesh failed because of duplicated nodes in boundary mesh."
"A mesh could not be generated using the current meshing options and settings"

So I am doing a very simple simulation of adding a nozzle at the end of a flow. I have individually meshed each component and no errors come up. After that, I have also meshed each individual component with an enclosure and no errors. Next, I combined the parts and meshed with no enclosure, still no errors. But now when I try and add an enclosure around the combined parts, that error shows up and I can't understand why.

If it were a boundary issue between the individual parts, that error would have showed up when I meshed the two without the enclosure but it never did. So I don't get how the enclosure is causing errors on a boundary mesh. If only the error also said where the boundary mesh error were occurring it would have been easier to understand what's causing the problem.

Anyone have idea on why its occurring?

Ps. Just to clarify the drawing, the nozzle is added after the end of the pipe.

wiggles8x0 · March 19, 2016, 20:29

I tried again by filling up the nozzle and this time the meshing didn't stop for 10 mins. So the only thing I can assume from this is that there really is some problem where the pipe and nozzle meet but can't seem to understand why.

One possible reason could be that there is a gap between the pipe and nozzle but that doesn't make much sense since they were designed to be flush with each other in solidworks.

wiggles8x0 · March 19, 2016, 20:39

I made the nozzle part again and this time when using the revolve feature, I didn't do a thin revolve. Now meshing works just fine.

It's interesting that the thin-revolve feature didn't create a flat surface (that's the only logical solution I can come up with why I was getting errors before since there was probably a really really small gap between the pipe and nozzle. The enclosure was probably trying to figure out how to fill this up but couldn't and then gave the incorrect error). Weird solidworks mechanic!

vasava · March 29, 2016, 04:42

Can you post picture of the outline ribbon on the left side (the one that contains all the setup info.). Also make all the domains transparent and post a picture especially the part where the pipe and nozzle are meeting.

wiggles8x0 · March 29, 2016, 11:19

Thank you for trying to help! I resolved the issue myself

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March 19, 2016, 20:29		#2
wiggles8x0 New Member Yoshi Toshi Join Date: Mar 2016 Posts: 29 Rep Power: 10	I tried again by filling up the nozzle and this time the meshing didn't stop for 10 mins. So the only thing I can assume from this is that there really is some problem where the pipe and nozzle meet but can't seem to understand why. One possible reason could be that there is a gap between the pipe and nozzle but that doesn't make much sense since they were designed to be flush with each other in solidworks.

March 19, 2016, 20:39		#3
wiggles8x0 New Member Yoshi Toshi Join Date: Mar 2016 Posts: 29 Rep Power: 10	I made the nozzle part again and this time when using the revolve feature, I didn't do a thin revolve. Now meshing works just fine. It's interesting that the thin-revolve feature didn't create a flat surface (that's the only logical solution I can come up with why I was getting errors before since there was probably a really really small gap between the pipe and nozzle. The enclosure was probably trying to figure out how to fill this up but couldn't and then gave the incorrect error). Weird solidworks mechanic!

March 29, 2016, 04:42		#4
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	Can you post picture of the outline ribbon on the left side (the one that contains all the setup info.). Also make all the domains transparent and post a picture especially the part where the pipe and nozzle are meeting.

March 29, 2016, 11:19		#5
wiggles8x0 New Member Yoshi Toshi Join Date: Mar 2016 Posts: 29 Rep Power: 10	Thank you for trying to help! I resolved the issue myself