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Summary: Stabilization for rotating and compressible analyses.
A = 0: Default behavior in which the stabilization is only used for models with rotating regions.
A = 1: Uses the stabilization in all cases if you are running flow and have more than one enhancement layer.
A = 2: Disables the flag.
Some rotating and compressible analyses are prone to non-physical high-velocity “jetting” in the boundary layer regions. This algorithm reduces this behavior and improves stability and accuracy.
It is enabled automatically for rotating region analyses that have mesh enhancement enabled.