[Jo_Sharon]

Hey all,

I'm pretty new in CFD. In fact I've just finished a few tutorial on Fluent CFD. What I want to ask is:
What is the definition of Turbulent Reynold Number (Re_y)?
Is it different from common reynold number?

I'm actually working on simulation of simple 3D mixer (steady state, moving reference frame). The tank is rectangular with 6 blades turbine mixer. I want to evaluate the performance of the mixer. For now, I just use water as the working liquid. Just to see how the water move with the current mixer setting (70 RPM, 70 degree pitch).

How do I evaluate the mixer performance?
I'm guessing that Turbulent Reynold Number (Re_y) is Reynold Number (Re) across the tank. So if all part of liquid in the tank achieve turbulent Re (10000), then the mixing is good. But that just a guess. So please if any of you would be kind enough to help.

Thanks