Why is the velocity filed different at the periodic surface ?

- June 22, 2019 at 12:57 pm
  
  qooin
  Subscriber
  
  HI,
  
  In Fluent, my computational domain is a cube. I set two surfaces (top and bottom) as translation periodic boundaries. However, I found that the velocity filed at these two surfaces is different. This is why?
  
  Thanks.

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