CFX solver interrupt control
 

"Hello, I have a question regarding interrupt control in CFX Solver. In the example below, the analysis terminates when the standard deviation of Eff (Efficiency) is less than 0.01 from the 51st iteration onwards. I want to use this feature to terminate the analysis when the Eff (Standard Deviation) remains below 0.1 for 50 consecutive iterations. Could you please advise me on how to construct the expression for this?"

probe(Expression Value.Standard Deviation)@Efficiency < 0.01 && aitern > 51

It seems you are trying to interrupt the simulation using the "Coefficient of variation 50" concept. That is a built-in feature in recent releases,

probe(Expression Value.Coefficient of Variation)@MyEfficiencyMonitor

It assumes you already have a monitor point named MyEfficiencyMonitor with Option = Expression
Expression = YourEfficiencyDefinition

with monitor statistics active, Coefficient of Variation selected, and number of iterations set to a value of 50, or larger (your decision)

The statistics is a moving quantity; therefore, no need to track the iteration counter.

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thank you for replying my question
 

Is it possible about 23th ansys version?

I am using 21th ansys version. so I need to install new version for recent version. But maintenance period is expired...

Thank you for your concern.