periodic conditions

kostaspan · May 17, 2012, 13:40

Dear all
I have made a 3d mesh which has 2 periodic faces. When i open the .msh file fluent has these two faces as wall. How can i set them as periodic?
At boundary conditions i dont find the boundary: periodic and the "periodic conditions" of "Define" menu is not enable.
What could i do for that?

Thanks..

Edu-R · May 17, 2012, 14:07

Hi!

You have to do with a TUI command:

/mesh/modify-zones/make-periodic

Regards,

-Edu-

delaneyluke · May 18, 2012, 03:14

If you're using FLUENT 13 then change the boundarys of the 2 faces to interfaces and then under the tab Mesh Interface you can define your periodic boundary

Regards
Luke

Far · May 18, 2012, 03:20

@delaneyluke: I tend to use this method, whenever the periodic surfaces have the different mesh distribution.

@Edu-R: This method only works, when the mesh is exactly the same (I am not talking about similar) node to node on periodic planes.

Edu-R · May 18, 2012, 15:04

Quote:

Originally Posted by Far

@Edu-R: This method only works, when the mesh is exactly the same (I am not talking about similar) node to node on periodic planes.

You are right, I supposed that he had a conformal mesh. Sorry about that

kostaspan, as Far says, if you don't have the same mesh (or at least with a difference lower than "matching tolerance" parameter), you have to use the method they say.

Regards

Far · May 18, 2012, 15:38

Quote:

You are right, I supposed that he had a conformal mesh. Sorry about that

Just wanted to share my experience, no hard feeling. Afterall this is brain storming. Your method is my favourite one, and I use whenever I can.

May 17, 2012, 13:40	periodic conditions	#1
kostaspan New Member kostas Join Date: Mar 2010 Posts: 12 Rep Power: 16	Dear all I have made a 3d mesh which has 2 periodic faces. When i open the .msh file fluent has these two faces as wall. How can i set them as periodic? At boundary conditions i dont find the boundary: periodic and the "periodic conditions" of "Define" menu is not enable. What could i do for that? Thanks..

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May 17, 2012, 14:07		#2
Edu-R Member Edu Join Date: Sep 2009 Posts: 36 Rep Power: 16	Hi! You have to do with a TUI command: /mesh/modify-zones/make-periodic Regards, -Edu-

May 18, 2012, 03:14		#3
delaneyluke Senior Member Join Date: Mar 2009 Location: Indiana, US Posts: 186 Rep Power: 17	If you're using FLUENT 13 then change the boundarys of the 2 faces to interfaces and then under the tab Mesh Interface you can define your periodic boundary Regards Luke

May 18, 2012, 03:20		#4
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	@delaneyluke: I tend to use this method, whenever the periodic surfaces have the different mesh distribution. @Edu-R: This method only works, when the mesh is exactly the same (I am not talking about similar) node to node on periodic planes.