How to estimate uncertainity during simulation
I am monitoring a CFD simulation with performance numbers (Total pressure loss).I have noticed that there is an oscillation of the performance number for every iteration(Variation in the range of +/-2.5%).Kindly let me know how could i account those variation?
Thanks in advance
That depends on the physics of your simulation.
I assume it is a transient run?
+-2% is not at all abnormal.
If this answer is unsatisfactory, please provide more details.
If your simulation is steady state this FAQ is for you: http://www.cfd-online.com/Wiki/Ansys...gence_criteria
Even if your simulation is transient many of the things discussed are relevant.
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