Cfx rotating domain

Gvasalli · March 3, 2019, 08:21

Hello everyone
I had a problem while setting timestep for rotating rotor at 100000 rev/min which takes 0.0006 seconds to complete one revolution when I was setting time step less than 0.0006s and saving each timestep as a result file in cfx post rotor wasn't rotating now when I set timestep 0.0002s and save every 3 trn files rotor is rotating in cfx post. Could you tell me why?
Best regards
Giorgi

AtoHM · March 4, 2019, 06:24

There is an option in post to transform the mesh according the rotation I think. It might be set up differently for .trn and full results by default, causing it to rotate or not rotate depending on the ouput type.

Gvasalli · March 4, 2019, 06:29

Thank you. I will try.
Best regards

urosgrivc · March 5, 2019, 02:06

If you only have one rotating domain this one will not appear to rotate in post, It will only rotate if you have at least two domains connected with a transient rotor-stator connection, This said I think that something can surely be done, as you can do almost anything in post.

Gvasalli · March 5, 2019, 02:20

I have this type of connection and domain is rotating but at some specific timesteps it appears to be fixed

March 3, 2019, 08:21	Cfx rotating domain	#1
Gvasalli New Member Giorgi Join Date: Feb 2019 Posts: 16 Rep Power: 7	Hello everyone I had a problem while setting timestep for rotating rotor at 100000 rev/min which takes 0.0006 seconds to complete one revolution when I was setting time step less than 0.0006s and saving each timestep as a result file in cfx post rotor wasn't rotating now when I set timestep 0.0002s and save every 3 trn files rotor is rotating in cfx post. Could you tell me why? Best regards Giorgi

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March 4, 2019, 06:24		#2
AtoHM Senior Member M Join Date: Dec 2017 Posts: 703 Rep Power: 13	There is an option in post to transform the mesh according the rotation I think. It might be set up differently for .trn and full results by default, causing it to rotate or not rotate depending on the ouput type.

March 4, 2019, 06:29		#3
Gvasalli New Member Giorgi Join Date: Feb 2019 Posts: 16 Rep Power: 7	Thank you. I will try. Best regards

March 5, 2019, 02:06		#4
urosgrivc Senior Member urosgrivc Join Date: Dec 2015 Location: Slovenija Posts: 365 Rep Power: 12	If you only have one rotating domain this one will not appear to rotate in post, It will only rotate if you have at least two domains connected with a transient rotor-stator connection, This said I think that something can surely be done, as you can do almost anything in post.

March 5, 2019, 02:20		#5
Gvasalli New Member Giorgi Join Date: Feb 2019 Posts: 16 Rep Power: 7	I have this type of connection and domain is rotating but at some specific timesteps it appears to be fixed