Reply To: How to determine average residence time of fluid

[Rob]

Look up "plug flow residence time", or go ask a Chemical Engineer. Then compare that to the 0.04s you've modelled. 

In the model, you can use pathlines to get an idea of flow residence time, species tracer (like in the experiments) or a scalar method commonly referred to as "mean age of air". The latter isn't covered the documentation, but should be explained in Solutions either on here (I think it's public) or on the Customer Portal (your Prof should have access).