Periodicity

Mr.X · October 24, 2013, 07:36

What is the effect of rotational periodicity in the transient analysis?? I tried with opening for the rotational periodicity mentioned area for first (my simulation didn't run got error saying divide by zero.. )
later i gave the region as rotational periodicity then every time i run the simulation there is a message called "CCl2flow.exe has stopped working"

ghorrocks · October 24, 2013, 08:44

Rotational periodicity is a mathematical link between faces on a domain which mimic rotational periodicity. It is a little hard to explain - If you do the CFX tutorials it might make more sense.

Also the FAQ may help: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F

Mr.X · October 24, 2013, 22:47

what is the cause of crashing og CCl2flow.exe?

ghorrocks · October 24, 2013, 22:48

No idea. That is the gizmo which reads the CCL so it looks like something is invalid in your CCL.

Mr.X · October 25, 2013, 02:56

I tried to run other simulations they are okay. but when i particularly run this one the ccl2flow stops working.

ghorrocks · October 25, 2013, 05:52

As I said, the error suggests your CCL is invalid, or it is not linked to your mesh correctly. I would regenerate that def file in CFX-Pre.

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October 24, 2013, 08:44		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	Rotational periodicity is a mathematical link between faces on a domain which mimic rotational periodicity. It is a little hard to explain - If you do the CFX tutorials it might make more sense. Also the FAQ may help: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F

October 24, 2013, 22:47		#3
Mr.X New Member Join Date: Oct 2013 Posts: 9 Rep Power: 13	what is the cause of crashing og CCl2flow.exe?

October 24, 2013, 22:48		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	No idea. That is the gizmo which reads the CCL so it looks like something is invalid in your CCL.

October 25, 2013, 02:56		#5
Mr.X New Member Join Date: Oct 2013 Posts: 9 Rep Power: 13	I tried to run other simulations they are okay. but when i particularly run this one the ccl2flow stops working.

October 25, 2013, 05:52		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	As I said, the error suggests your CCL is invalid, or it is not linked to your mesh correctly. I would regenerate that def file in CFX-Pre.