[ICEM] Periodic mesh

Cecco · May 30, 2012, 02:59

Hi guys,
I'm trying to study the flow filed insiede a centrifugal blower.
I'm meshing the rotating domain with tetra/prism elements by ICEM.
I've meshed just a portion on the entire domain that will be copied around rotatoty axis.
This portion has two periodic walls and the question is the following:
why when I unable the visualization of one of these walls, some "holes" appear on the other one? Is that normal?

Far · May 30, 2012, 03:18

pics please

Cecco · May 30, 2012, 08:20

Quote:

Originally Posted by Far

pics please

First Pic contains periodic wall. The rotation is along Z direction.
Second pic I disabled periodic wall and part of the wall (different colour) continue to stay. It's something like the part of the wall who stay belong to the other periodic wall.

Is that normal? Or something went wrong?

PSYMN · May 31, 2012, 16:40

Not normal...

Is it possible that you have two overlapping surfaces in that location and some of the elements are just associating with the wrong one?

Cecco · June 4, 2012, 08:02

Yes, I guess the mistake is the association. Because if I use "Repaire Mesh --> Associate Mesh" automatically I have no problem anymore.

Thanks

Far · June 4, 2012, 09:09

Strange.....................

May 30, 2012, 02:59	Periodic mesh	#1
Cecco Member Francesco Join Date: Jan 2012 Posts: 31 Rep Power: 14	Hi guys, I'm trying to study the flow filed insiede a centrifugal blower. I'm meshing the rotating domain with tetra/prism elements by ICEM. I've meshed just a portion on the entire domain that will be copied around rotatoty axis. This portion has two periodic walls and the question is the following: why when I unable the visualization of one of these walls, some "holes" appear on the other one? Is that normal?

May 31, 2012, 16:40		#4
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	Not normal... Is it possible that you have two overlapping surfaces in that location and some of the elements are just associating with the wrong one? __________________ ----------------------------------------- Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

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May 30, 2012, 03:18		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	pics please

June 4, 2012, 08:02		#5
Cecco Member Francesco Join Date: Jan 2012 Posts: 31 Rep Power: 14	Yes, I guess the mistake is the association. Because if I use "Repaire Mesh --> Associate Mesh" automatically I have no problem anymore. Thanks

June 4, 2012, 09:09		#6
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Strange.....................