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Gtheta was also plotted using the custom function in FLUENT. \\ !Gtheta plot.png|width=713,height=412! GӨ = \[ε/υ\]^1/2^ \* \[Vol. flow rate{~}cell~/Cell Volume\] (4) \\ \\ \\ |
The Gtheta plot values range from 0 to 3000, and the highest values are concentrated at the separation regime.
Conclusion
The Gtheta that compares best to mechanically mixed floculators is the Gtheta calculated from method 2, where the G value is averaged, and this averaged value is multiplied by the residence time of a particle. As suggested in discussions with Monroe, this simplistic definition fails to incorporate the weighted flow average.
The values for the other methods represent this weighted flow average, however they are much smaller. This reflects how most of the cells are in extremely low flow stagnant conditions. This is not physically the case and represents how the converged solution represents the time-averaged value. The fluctuations which would decrease resonance time and increase shear in all regions are not present in the flow in FLUENT.