[ANSYS Meshing] Easiest way to copy/instance a periodic mesh?

rss27 · August 23, 2022, 20:25

I have a mesh that was made for a 60 degree sector from a full 360 degree part. I want to copy/instance this 60 degree sector 5 times periodically about an axis ( a circumferential pattern, as it were ). What is the easiest way to do this? Do I need the geometry of the full 360 degree part to do this or can I do this without the full geometry? I have the 2022 R1 ANSYS Meshing User's Guide and a few relevant YouTube videos, but is it unclear how to do this.
I would think it would be as easy as making a circular pattern in Solidworks, and then using Node Merge to merge the ( duplicate ) nodes at the 6 periodic faces.

This 60 degree sector part was decomposed into 27 bodies to get an all hex mesh as desired. I obviously don't want to do this separately 5 more times for each individual 60 degree sector; just copy what I already have to the remaining 5 sectors.

Any and all help is appreciated.

Gert-Jan · August 24, 2022, 05:28

Do this in the solver.
Import the mesh in CFX-Pre. There you can copy and glue the mesh parts 5 times to end up with a full 360 mesh. Very convenient.
Not sure about Fluent but it would surprise me if this option is not available.

rss27 · August 24, 2022, 21:40

I was planning on using Fluent unless you can convince me of the virtues of CFX over Fluent. I'll have to see if there's something in Fluent compared to what you just mentioned. I'm just a novice at meshing ( although I eventually got a very good mesh using the mesher in ANSYS ) and a beginner in Fluent.

Gert-Jan · August 25, 2022, 01:57

I highly prefer CFX above Fluent. But I have a long history with CFD/CFX and are therefore preoccupied.
CFX is easier to learn, but CFX is in fact a dead end since it is not longer improved by ANSYS. All their effort is put in Fluent and Discovery.So, I would recommend Fluent, if you want to become a specialist in this field. Unless your case is on rotating equipment, then CFX is preferred.

August 23, 2022, 20:25	Easiest way to copy/instance a periodic mesh?	#1
rss27 New Member Join Date: Aug 2022 Posts: 4 Rep Power: 3	I have a mesh that was made for a 60 degree sector from a full 360 degree part. I want to copy/instance this 60 degree sector 5 times periodically about an axis ( a circumferential pattern, as it were ). What is the easiest way to do this? Do I need the geometry of the full 360 degree part to do this or can I do this without the full geometry? I have the 2022 R1 ANSYS Meshing User's Guide and a few relevant YouTube videos, but is it unclear how to do this. I would think it would be as easy as making a circular pattern in Solidworks, and then using Node Merge to merge the ( duplicate ) nodes at the 6 periodic faces. This 60 degree sector part was decomposed into 27 bodies to get an all hex mesh as desired. I obviously don't want to do this separately 5 more times for each individual 60 degree sector; just copy what I already have to the remaining 5 sectors. Any and all help is appreciated.

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August 24, 2022, 05:28		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,823 Rep Power: 27	Do this in the solver. Import the mesh in CFX-Pre. There you can copy and glue the mesh parts 5 times to end up with a full 360 mesh. Very convenient. Not sure about Fluent but it would surprise me if this option is not available.

August 24, 2022, 21:40		#3
rss27 New Member Join Date: Aug 2022 Posts: 4 Rep Power: 3	I was planning on using Fluent unless you can convince me of the virtues of CFX over Fluent. I'll have to see if there's something in Fluent compared to what you just mentioned. I'm just a novice at meshing ( although I eventually got a very good mesh using the mesher in ANSYS ) and a beginner in Fluent.

August 25, 2022, 01:57		#4
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,823 Rep Power: 27	I highly prefer CFX above Fluent. But I have a long history with CFD/CFX and are therefore preoccupied. CFX is easier to learn, but CFX is in fact a dead end since it is not longer improved by ANSYS. All their effort is put in Fluent and Discovery.So, I would recommend Fluent, if you want to become a specialist in this field. Unless your case is on rotating equipment, then CFX is preferred.