How to compare two fluent setup cases (.cas.h5)

Rick · October 22, 2022, 18:39

Hi Everyone,

I have two fluent cases that have the same setup (I think they have). I am getting completely different results using these cases. The cases comprise a two-way FSI simulation of aortic valve. I didn't have such problems working with CFX. Is there any way to compare the two cases to understand what their difference is? It would be great if we could open these case files in a text editor and then compare the two files together.

I would appreciate any help that you can provide.

Nawaf_Ar · October 26, 2022, 08:05

Try running both off of the same case.
Meaning, take the first case (.cas.h5) file, and replace the mesh with the other one. If everything is completely the same, it should work.

You will get different results from the initialization, but the convergence (i.e physics) should be the same.

Gert-Jan · October 26, 2022, 09:17

You're hitting one of the disadvantages of Fluent over CFX.

Rick · October 26, 2022, 09:57

Dear Nawaf,

This is a good idea. Thank you. The reason that I didn't go for this option is that when I want to do this, Fluent gives a warning message regarding the automatic mesh update feature. So, I thought by replacing the mesh some other settings would be modified as well.

Dear Gert-Jan,

Yep! It would be great if Fluent could add this feature.

ChaoLW · October 27, 2022, 05:41

Hi,

Try using fluent-TUI: file/write-settings. It allows writing your case settings and opening your setting in text editor.

Hope it helps.

Rick · October 27, 2022, 10:15

Dear Liu,

Great. Thanks!

I haven't worked with Fluent TUI so far. Does it refer to the "Console" tab at the bottom panel of the "Graphics"?

ChaoLW · October 27, 2022, 10:47

Quote:

Originally Posted by Rick

Dear Liu,

Great. Thanks!

I haven't worked with Fluent TUI so far. Does it refer to the "Console" tab at the bottom panel of the "Graphics"?

Yes, exactly.

Rick · October 27, 2022, 15:29

Perfect! It works!

Thank you!

October 22, 2022, 18:39	How to compare two fluent setup cases (.cas.h5)	#1
Rick New Member Rick Join Date: Aug 2022 Posts: 18 Rep Power: 3	Hi Everyone, I have two fluent cases that have the same setup (I think they have). I am getting completely different results using these cases. The cases comprise a two-way FSI simulation of aortic valve. I didn't have such problems working with CFX. Is there any way to compare the two cases to understand what their difference is? It would be great if we could open these case files in a text editor and then compare the two files together. I would appreciate any help that you can provide. Last edited by Rick; October 23, 2022 at 08:41.

October 26, 2022, 09:57		#4
Rick New Member Rick Join Date: Aug 2022 Posts: 18 Rep Power: 3	Dear Nawaf, This is a good idea. Thank you. The reason that I didn't go for this option is that when I want to do this, Fluent gives a warning message regarding the automatic mesh update feature. So, I thought by replacing the mesh some other settings would be modified as well. Dear Gert-Jan, Yep! It would be great if Fluent could add this feature. Last edited by Rick; October 26, 2022 at 16:38.

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October 26, 2022, 08:05		#2
Nawaf_Ar New Member Nawaf Alrajeh Join Date: Aug 2022 Posts: 9 Rep Power: 3	Try running both off of the same case. Meaning, take the first case (.cas.h5) file, and replace the mesh with the other one. If everything is completely the same, it should work. You will get different results from the initialization, but the convergence (i.e physics) should be the same.

October 26, 2022, 09:17		#3
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,835 Rep Power: 27	You're hitting one of the disadvantages of Fluent over CFX.

October 27, 2022, 05:41		#5
ChaoLW New Member Liu Wenchao Join Date: Jan 2021 Posts: 15 Rep Power: 5	Hi, Try using fluent-TUI: file/write-settings. It allows writing your case settings and opening your setting in text editor. Hope it helps.

October 27, 2022, 10:15		#6
Rick New Member Rick Join Date: Aug 2022 Posts: 18 Rep Power: 3	Dear Liu, Great. Thanks! I haven't worked with Fluent TUI so far. Does it refer to the "Console" tab at the bottom panel of the "Graphics"?

October 27, 2022, 15:29		#8
Rick New Member Rick Join Date: Aug 2022 Posts: 18 Rep Power: 3	Perfect! It works! Thank you!