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FLUENT Periodic Boundary Condition SOLVED + TUTORIAL

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Old   April 15, 2014, 06:25
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Xiaohua Li
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Thank you very much. I just face the problem. I hope it can help .
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Old   July 30, 2014, 07:47
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Is there a way to implement periodic boundary condition with UDF ? thx
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Old   August 14, 2014, 04:35
Default periodic boundries
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Hi all, I am simulating an axial fan in fluent with inlet and outlet duct for finding the fan curve, I have a confusion regarding the interfaces types should I have to make the interfaces with periodic boundary condition and if yes then what should I consider rotational or translational and how can I calculate the angle if I am considering rotational under the periodic boundary tab.

Thanks in advance

Hashim
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Old   October 16, 2014, 01:58
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This was Awesome!!! I just started to understand periodic boundary conditions and in my first shot I succeeded with help of this topic, Thank you very much Peter!

Additional Question: Only a small question, how about boundary condition? I mean for hydraulic diameter, should I assume whole diameter or applying 4*Area/Pwet for 30 slice?
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Old   October 16, 2014, 08:00
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Quote:
Originally Posted by mustafa-uslu View Post
This was Awesome!!! I just started to understand periodic boundary conditions and in my first shot I succeeded with help of this topic, Thank you very much Peter!

Additional Question: Only a small question, how about boundary condition? I mean for hydraulic diameter, should I assume whole diameter or applying 4*Area/Pwet for 30 slice?
Whole diameter!
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Old   October 16, 2014, 08:03
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Cheers, thats what I've done though
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Old   October 16, 2014, 08:42
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Originally Posted by euanw6 View Post
I am using a 20 degree segement of a annular cascade of 18 stators. I have followed the steps noted to apply periodic BCs to each side of the 20 degree segment but I get the following error.

zone 11: matched 0 out of 4395 faces.
zone 10: matched 0 out of 4395 faces.
Error: Failed to make zones periodic.
Error Object: #f

Seems like I may have missed something out but I've followed each step.

I created named selections for these two faces and called them interface1 and interface2.
This is also happening to me when I do some changes on geometry/mesh. What I do is each time I double check the periodic faces (if they are still same and matched) and open fluent, having this error and apply same procedure over and over again (mesh/modify/make periodic).

I dont know if there is easier way (to cancel previous selections and apply always new)
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Old   December 1, 2014, 02:15
Default problem in face matching in periodic boundary condition
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MOHD ZEESHAN FARIDI
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hi, peter and cfd fellows
i hv encountered a problem in making periodic boundaries in fluent i.e
translation deltas: 0.000000 0.000000 0.003630
zone 27: matched 259 out of 307 faces.
zone 26: matched 259 out of 312 faces.

Error: Failed to make zones periodic.
Error Object: #f
kidly give me somepath for this

thanks
hope 4 ur answer
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Old   December 17, 2014, 06:31
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Dear Peter I have one very important question. How to define periodicity For Rotor and Stator in ICEM CFD when there are different Number of Blades for Rotor and Different Number of Blades for Stator, since the angle will be different for Each of Them.

Thank You
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Old   June 3, 2015, 20:15
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Islam H. Mohamed
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Hi Peter,
how can i determine the proper principal axis and the orientation about the principal axis ?
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Old   July 4, 2015, 10:17
Default Help required Regarding Periodic Boundary condition in Subchannel of Reactor
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Monib ur Rehman
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Hi every one.
I am working on CFD using Fluent. i have stuck in the middle. Could anyone please tell me how do i apply periodic boundary condition on walls of sub channel of nuclear reactor? When i apply, i get divergence errors.Please help
Thanks in advance
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