ANSYS Fluent 18.1 vs 19: Different solutions to exact same model?

- June 22, 2018 at 3:45 pm
  
  eufrat
  Subscriber
  
  Hi all,
  
  I have access to two different ANSYS versions, 18.1 and 19. I often use them parallel to calculate slightly different models at the same time.
  
  A few days ago I ran the same exact same model on the two different computers for reasons of comparing the calculation time. One computer has far more power than the other one.
  
  Well, I encountered that the solutions were not the same. For example computer A diverges at some point, while computer B does not and keeps on calculating.
  
  As far as I know, this should be completely impossible. The model is the same, the boundary conditions are the same, so ANSYS should come to ONE solution at computer A and B. Differences in calculation speed might occur, of course.
  
  Both simulations run in double precision. I built it on Computer A, saved it as a case + data file and copied it on Computer B.
  
  I am completely confused. This should not be, so maybe some of you have suggestions what the reason might be for this phenomen.
  
  Thanks in advance,
  
  eufrat
- January 17, 2019 at 8:48 am
  
  DrAmine
  Ansys Employee
  
  Please feel free to create a dedicated thread for your request if you do not receive any answer from eufrat.

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