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-   -   Periodic Boundary condition. (http://www.cfd-online.com/Forums/fluent/99857-periodic-boundary-condition.html)

A7A April 13, 2012 12:34

Periodic Boundary condition.
 
Hi

I have a problem in making a periodic boundary condition, it happens when i try to make my mesh finer. Fluent gives me this Error

Warning: differing number of faces on these threads.
computed translation deltas: 0.100000 -0.000126
zone 20016: matched 83 out of 83 faces.
zone 30021: matched 83 out of 84 faces.
Error: Failed to make zones periodic.
Error Object: #f

Thank you.

banty April 13, 2012 13:24

Hi,

This is because of the mismatch of cell centroid of two boundary u are trying to make conformal periodic BC.
U first convert the boundary as interface BC and then go to interface panel and make them periodic (Non-conformal). Non-conformal periodic BC also gives the good result.

A7A April 13, 2012 13:42

Hi,

could you tell me how to make a non conformal periodic bc.

Thank you.

banty April 13, 2012 14:06

first make the boundary as interface BC to which u want to make periodic and see the web page. it may be halp u.
https://www.sharcnet.ca/Software/Flu...g/node1356.htm

A7A April 13, 2012 14:34

Thank you for your reply it was helpful.

Edu-R April 13, 2012 20:01

Hi!

To make a conformal periodic BC you can use the "Match Control" option inside Ansys Mesher.

Regards


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