[nick.l.thomas]

I would like to create an expression that references the angular velocity of a rotating domain within a stationary domain. I've tried and understand that I can't average it like a field variable at a particular domain or boundary. Similarly I would like to create an expression that uses inlet velocity as a variable. At the moment I am just doing that by

areaAve(Velocity)@Inlet

but is there a better way that simply references the exact value specified at the inlet?

[ghorrocks]

Define a CEL variable for the rotational speed and use that to set the rotational speed. Then you can refer to the CEL variable where ever you like.